TM 11-5855-297-12&P TECHNICAL MANUAL
OPERATOR’S AND UNIT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
AIMING LIGHT, INFRARED AN/PAQ-4A (NSN 5855-01-312-5160) HEADQUARTERS, DEPARTMENT OF THE ARMY 15 SEPTEMBER 1990
This determination was made operational purposes only on 14 June 1990. Other requests for the document will be
AMSEL-LC–ME-P, New Jersey 07703-5000. DESTRUCTION prevent
TM 11-5855-297-12&P C1 Change HEADQUARTERS DEPARTMENT OF THE ARMY No. 1 Washington, DC, 15 February 1995 Operator’s and Unit Maintenance Manual (Including Repair Parts and Special Tools list) LIGHT, AIMING, INFRARED AN/PAQ-4A (NSN 5855-01-312-5160)(EIC:IRN) TM 11-5855-297-12&P, 15 September 1990, is changed as follows: 1. Remove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical bar in the margin of the page. Added or revised illustrations are indicated by a bar adjacent to the identification number. Remove pages 1-17 thru 2-6 2-31 thru 2-34 D-1 and E-O
Insert pages 1-17 thru 2-6 2-31 thru 2-40 D-1 and E-O
2. File this change sheet in front of the manual for reference purposes. Distribution authorized to the Department of Defense and DOD contractors only for official use or for administrative or operational purposes. This determination was made on 30 July 1990. Other requests for this document will be referred to: Commander, US Army Communications - Electronics Commandant Fort Monmouth, ATTN: AMSEL-LC-LM-LT, Fort Monmouth, New Jersey 07703-5007. DESTRUCTION NOTICE - Destroy by any method that will prevent disclosure of contents or reconstruction of the document.
By Order of the Secretaty of the Army
GORDON R. SULLIVAN General, United States Army Chief of Staff
Administrative Assistant to the Secretary of the Army 08148
DISTRIBUTION: To be distributed in accordance with DA Form 12-36-E, block 8468 requirements for TM 11-5855-297-12&P.
Although the infrared light beam emitted by the aiming light is considered eye safe, suitable precautions must be taken to avoid overexposure to the infrared beam of light. Precautionary measures include the following: Avoid viewing the infrared emitter/lens directly with naked eye, Increasing the distance from the eye to the light source greatly reduces the risks of overexposure. Avoid viewing the emitter/lens directly along the optical axis of the infrared light beam. Especially avoid viewing the emitter/lens along the optical axis of the infrared light beam through stabilized optics such as binoculars or telescopes.
WARNING MERCURY BATTERIES The BA-1576/U battery contains mercury and should be handled in the following manner: ●
Do not heat, incinerate, crush, puncture, disassemble, or otherwise mutilate the batteries. Do not short circuit battery terminals, Do not discard mercury batteries, Turn them in to a Property Disposal Officer in accordance with DLSC Handbook 41601.
WARNING LITHIUM BATTERIES Lithium batteries used with Aiming Light, Infrared AN/PAQ-4A contain sulfur dioxide and may explode if handled improperly. Do not short circuit, incinerate, mutilate, or attempt to charge these batteries. Serious injury to personnel may result from failure to comply with this warning.
WARNING Observe the following precautions when handling lithium batteries to minimize the chance of personal injury or equipment damage. ●
DO NOT parallel batteries without diode protection.
DO NOT short-circuit battery terminals.
DO NOT heat, incinerate, crush, puncture, disassemble, or otherwise mutilate the batteries.
DO NOT attempt to recharge the batteries.
DO NOT bypass the internal fuse or replace it with a fuse of a different rating,
DO NOT store batteries in equipment during long periods of disuse (over 30 days),
TURN EQUIPMENT OFF immediately if you: 1) detect overheating in battery compartment, 2) hear hissing sound of venting battery, or 3) smell irritating sulfur dioxide gas. Allow battery to cool for 30 to 60 minutes before removal. Ensure adequate ventilation if venting occurs. Avoid prolonged or repeated breathing of fumes. DO NOT discard lithium batteries. Turn them in to a Property Disposal Officer in accordance with DLSC Handbook 41601, c
WARNING AA ALKALINE BATTERY BA-3058/U Do not dispose of Alkaline Battery BA-3058/U in fire. Do not short circuit or otherwise tamper with battery. Return batteries to Property Disposal Officer for disposal in accordance with DLSC Handbook 41601.
FIRST AID First aid required should be administered in accordance with FM 21-11, First Aid for soldiers.
HEADQUARTERS DEPARTMENT OF THE ARMY Washington, DC 15 September 1990
OPERATOR’S AND UNIT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST) FOR AIMING LIGHT, INFRARED AN/PAQ-4A (NSN 5855-01-312-5160) Current as of 30 July 1990
REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS You can help improve this manual. If you find any mistakes or if you know of a way to improve the procedures, please let us know. Mail your letter or DA Form 2028 (Recommended Changes to Publications and Blank Forms) direct to: Commander, US Army Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-LC-ME-PS, Fort Monmouth, New Jersey, 07703-5000, In either case a reply will be furnished direct to you.
TABLE OF CONTENTS
CHAPTER 1. Section I. Il. Ill. CHAPTER 2. Section 1. Il. Ill. IV..
Page How To Use This Manual. ., . . v INTRODU(YHON . . . . . . . . . . . . 1-1 General Information . . . . . . 1-2 Equipment Description . . . . . . 1-4 Principles of Operation. 1-15 OPERATING Instructions ... .. ... ...2-0 Description and Use of Operator’s Controls and Indicators . . . . . . . . . . . . . . . . . . 2-0 Preventive Maintenance Checks and Services (PMCS). . . . . . . 2-4 Operation Under Usual Conditions . . . . . . . . . . . . . . . . . 2-9 Operation Under Unusual Conditions . . . . . . . . . . . . . . ...2-32
CHAPTER 3. OPERATOR MAINTENANCE INSTRUCTIONS . . . . . . . . . . . . 3-1 Section I. Operator Troubleshooting Procedures..............3-1 II. Operator Maintenance Procedures . . . . . . . . . . . . . . . . 3-5 ii
TABLE OF CONTENTS (CONT.) Page
CHAPTER 4.1 UNIT MAINTENANCE ]. . . . . 4-1 Section I. Repair Parts, Special Too!s, Test, Measurement and Diagnostic Equipment (TMDE), and Support Equipment . . . . . . . . . . . . . . . . . 4-1 II. Service Upon Receipt. . . . 4-2 III. Unit Preventive Maintenance Checks and Services (PMCS) 4-3 IV. Unit Maintenance Procedures 4-6
APPENDIX A. REFERENCES . . . . . . . . . . . . . . A-1 B. MAINTENANCE ALLOCATION . . B-1 Section I. Introduction . . . . . . . . . . . . . . . . B-1 Il. Maintenance Allocation Chart , B7 Ill. Tools and Test Equipment Requirements . . . . . . . . . . . . . . B-8 lV, Remarks . . . . . . . . . . . . . . . . . . B-9 Illus.. Page Figure
APPENDIX C. COMPONENTS OF END ITEM LIST . . . . . . . . . . . . C-0 Section I. Introduction. . . . . . . . . . . . C-0 II. Integral Components of End ltem . . . . . . . . . . . . . . C-3 C-1 III. Basic Issue Items. C-5 C-2
TABLE OF CONTENTS (CONT.) Illus. Page Figure
APPENDIX D. ADDITIONAL AUTHORIZATION LIST.............. . . . D-0 Section I. Introduction ...... . . . . . . . . ...........D-0
APPENDIX E. EXPENDABLE SUPPLIES AND MATERIELS LIST . . . . . . E-0 Section I. Introduction . . . . . . . . . . . .........E-0 Il. Expendable Supplies and Materiels List. ......... E-2
APPENDIX F. REPAIR PARTS AND SPECIAL TOOLS LIST Section I. Il. GROUP 00.. 01. Section III. IV.
. . F-1 Introduction . . . . . . . . . . . . F-1 Repair Parts List . . . . . . . F-1-1 Aiming Light, Infrared AN/PAQ-4A . ......... . . . . . . . . F-1-1 F-1 Aiming Light Assembly..... F-2-1 F-2 Special Tools List (Not applicable) . . . . . . . . . Cross-Reference Indexes . . . . . . . . . . . . . . . F-I-0 National Stock Number Index . . . . . . . . . . . . . . . . . F-I-1 Part Number Index . . . . . . F-I-2 Figure and Item Number Index . . . . . . . . . . F-I-3
HOW TO USE THIS MANUAL ●
Usage You must familiarize yourself with the entire maintenance procedure before beginning the maintenance task. Read and follow all warning notices.
Manual Overview The contents of each chapter are listed at the beginning of the chapter, This listing includes the paragraph number, paragraph title, and page number.
Special Feature A locator is provided on the right-hand border of the front cover. This gives the location of the information most frequently used, To find the topic OPERATING INSTRUCTIONS, open the manual to the correct page by using the black tab on the side of the manual that lines up with the topic OPERATING INSTRUCTIONS.
Aiming Light, Infrared AN/PAQ-4A.
CHAPTER 1 INTRODUCTION Page Para 1-2 1-1 Scope . . . . . . . . . . . . . . . . . . . . . . . 1-2 Consolidated Index of Army Publications and Blank Forms . . . . . . . . . . . . . . 1-2 1-3 Maintenance Forms, Records and Reports . . . . . . . . . . . . . . . . . . 1-2 1-4 Reporting Equipment Improvement Recommendations (EIR). … ……… … 1-3 1-5 Destruction of Army Electronics Materiel . . . . . . . . . . . . . . . . . . . 1-3 1-6 Equipment Purpose, Capabilities, and Features . . . . . . . . . . . . . . . . . . . . 1-4 1-7 Location and Description of 1-8 Components . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 Equipment Data.... .. . .. . . . . . . 1-14 1-9 Warranty . . . . . . . . . . . . . . . . . . . . . ..... 1-14 1-10 General Functional Description, . . . . . . . 1-15 1-11 Mechanical Functions . . . . . . . . . . . . 1-16 1-12 Optical Functions . . . . . . . . . . . . . . . . . . . . . 1-17 1-13 Electronic Circuit Functions.... .. ..... .. 1-17 1-14 Control Circuit Functions... . . . . . . 1-17
GENERAL INFORMATION 1-1. SCOPE This manual contains instructions for the operation and unit maintenance of the Aiming Light, Infrared AN/PAQ4A. References are listed in Appendix A. The maintenance allocation chart (MAC) appears in Appendix B. The repair parts and special tools list appears in Appendix F. 1-2. CONSOLIDATED INDEX OF ARMY PUBLICATIONS AND BLANK FORMS Refer to the latest issue of DA Pam 25-30 to determine whether there are new editions, changes or additional publications pertaining to the equipment. 1-3. MAINTENANCE FORMS, RECORDS, AND REPORTS a. Reports of Maintenance and Unsatisfactory Equipment. Department of the Army forms and procedures used for equipment maintenance will be those prescribed by DA Pam 738-750, as contained in Maintenance Management Update. b. Reporting of Item and Packaging Discrepancies. Fill out and forward SF 364 (Report of Discrepancy (ROD)) as prescribed in AR 735-11-2/DLAR 4140.55/ SECNAVINST 4355.18/AFR 400-54/ MCO 4430.3J. 1-2
c. Transportation Discrepancy Report (TDR) (SF361). Fill out and forward Transportation Discrepancy Report (TDR) (SF 361) as prescribed in AR 55-38 /NAVSUPlNST 4610.33C/AFR 75-18/MCO P4610.19D/DLAR 4500.15. 1-4. REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR). If your Aiming Light needs improvement, let us know. Send us an EIR. You, the user, are the only one who can tell us what you don’t like about your equipment. Let us know why you don’t like the design or performance. Put it on an SF 368 (Product Quality Deficiency Report). Mail it to: Commander, US Army Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-PAMA-D, Fort Monmouth, New Jersey 07703-5000. We’ll send you a reply. 1-5. DESTRUCTION OF ARMY ELECTRONICS MATERIEL Destruction of Army electronics materiel to prevent enemy use shall be in accordance with TM 750-244-2.
Section Il. Equipment Description 1-6. EQUIPMENT PURPOSE, CAPABILITIES, AND FEATURES a. Purpose of Aiming Light. The aiming light increases the accuracy of your fire at night. After it is properly installed and zeroed on your weapon, and turned ON, the aiming light sends out an invisible pulsing light beam along the line of sight. The light beam can be seen with night vision equipment such as Night Vision Goggles AN/PVS-5, (TM 11-5855-238-10) or AN/PVS-7, (TM 115855-262-10). While wearing your night vision goggles, place the projected spot of light on the target and fire. The fired round should impact in the center of the spot of light on the target. You, therefore, can fire your weapon accurately at night by placing the spot of light on your target. When the aiming light is mounted on the M16A1 or M16A2 the rifle hand guard only allows the aiming light to be used in the momentary ON position when finger or thumb pressure is applied to the switch handle. This provision prevents the accidental emission of light energy from the aiming light until it is ready to be used for firing the weapon. The switch can be activated and left in the permanent ON position when the aiming light is mounted on other weapons. The aiming light uses the AN/PVS4 mounting bracket to mount to weapons other than the M16A1/A2 ●
NOTE It is only necessary to activate the aiming light a few seconds prior to firing. This reduces possibility of detection by the enemy. Remember! If the enemy is using night vision equipment they can detect the infrared light source used in the aiming light.
Figure 1-2. Equipment Used by the Operator.
b. Capabilities and Features. (1) As an operator, you will need to familiarize yourself with the following components. ● Batteries ● Scattershield ● Boresight aperture ● Mounting bracket M16A1/A2 ● Carrying bag ● Boresight mandrel ● Shipping and storage case (2) You should also know these features about the aiming light: ● Easily mounted to the M16A1/A2 rifles, M60 machine gun. ● Self-contained, battery-powered. ● Easy to maintain. ● Light weight and easily carried in a carrying bag. ● Can be used in extreme cold to -65° F (-54° C)
1-7. LOCATION AND DESCRIPTION OF COMPONENTS (Fig. 1-3) a. Battery Compartment. The batteries are located in the battery case at the rear of the aiming light. One BA-1567/U or one BA-5567/U can be used in lieu of two BA-3058/U (’‘AA”) batteries if desired. The batteries are easily removed by unscrewing the battery cap. b. Battery Cap. The battery cap is attached to the body of the aiming light by a strap to prevent its loss. It protects the batteries from exposure and loss and provides electrical contact, when using AA batteries. c. Scattershield. A scattershield is screwed on the front of the aiming light, This scattershield reduces off-axis radiation. One scattershieid is provided as part of the aiming light and the second is provided as a spare. d. Azimuth Adjuster. An azimuth adjuster is located on the left side of the aiming light, This adjuster moves the tight beam left or right to align it with the weapon barrel. e. Elevation Adjuster. An elevation adjuster is located on top of the aiming light, This adjuster moves the light beam up or down to align it with the weapon barrel. f. ON/OFF Switch. The ON/OFF switch is located on the bottom of the aiming light. The switch allows power from the batteries to operate the aiming light. The switch has three positions: ON, OFF and momentary ON. g. Mounting Foot. This weapons adapter foot secures the aiming light to the mounting bracket. 1-8
Figure 1-3. Location of Components and Controls.
h. Boresight Aperture. (Fig. 1-4) When boresighting under very low light levels, the boresight aperture is screwed on the front of both the mounted aiming light and the borelight inplace of the scattershield. One boresight aperture is supplied with each system and is kept in the carrying bag.
CEXIII008 Figure 1-4.
i. Mandrel, Boresight M16A1/A2. (Fig. 1-5) This mandrel is used during the process of battlesight zeroing and aligning the aiming light and your weapon. The mandrel is approximately 4.5 inches (11 cm) long and is used with the M16A1/A2 rifle.
Figure 1-5. Mandrel, Boresight, M16A1/A2.
j. Mounting Bracket M16A1/A2. (Fig. 1-6) This bracket fastens the aiming light securely to the M16 rifle.
CEZIII020 Figure 1-6. Mounting Bracket, M16A1/A2.
k. Carrying Bag. (Fig. 1-7) This bag attaches to your equipment belt. Space is provided for aiming light, a spare scattershield, two extra batteries, a M16 rifle mounting bracket, and the M16 alignment mandrel. The spare scattershield and boresight aperture are stored in a pocket inside the carrying bag. The alignment mandrel is placed through an elastic loop inside the carrying bag to secure it in a storage position.
Figure 1-7. Carrying Bag. 1-12
1. Shipping and Storage Case. (Fig. 1-8) The shipping and storage case protects the aiming light from damage during transportation, handling, and storage. The case has space for the aiming light, M16A1/A2 mounting bracket, boresight mandrel, boresight aperture, spare scattershield, batteries, carrying bag, lens tissue and operator’s manual.
Shipping and Storage Case, AN/PAQ-4A. 1-13
1-8. EQUIPMENT DATA WEIGHT AND DIMENSIONS Weight (with battery BA-5567/U). . . . . . ...198 g. Length. . . . . . . . . . . . . . . . . . . . . . . . . . . 16 . cm. (6.3 in,) Width. . . . . . . .. . . . . . . . . . . . . . . . . .. . . . 4.19 cm. (1.65 in.) Height . . . . . . . . . . . . . . . . . . . . . 5.3 cm. (2.1 in.) PERFORMANCE Range . . . . . . . 150m minimum against a mansized target. Battery Life @ 21 C(70 F) . . . . .. 100 hours operating (ON) time for BA-5567/U or BA-3058/U batteries. 50 hours operating (ON) time for BA-1567/U battery. Reliability. . . . . . . . . . . . . . . . .50,000 10 sec. cycles operations before failure. LIGHT.AIMING.INFRARED.AN/PAQ-4A
NSN 5855-01-312-5160 00083 A3142000 CONTRACT DAABO7-WM2-F101 MFR 08107 SERIAL NO.
WARRANTED Item EXPIRES CEX111015
1-9. WARRANTY a. The AN/PAQ-4A is warranted by a 3-year conditional manufacturer’s warranty against failure due to design, workmanship, materials or manufacturing defects. This warranty does not protect against damage due to misuse or mishandling. 1-14
b. Failed items which cannot be restored to operational condition, using the procedures contained in this manual, should be returned to Sacramento Army Depot, Sacramento, CA, for evacuation to the manufacturer. c. The manufacturer will, at his discretion, either repair or replace the item with a new or rebuilt unit. Items being sent to Sacramento Army Depot must be complete with all ancillary items. Batteries should not be shipped with the system.
SECTION III. PRINCIPLES OF OPERATION 1-10. GENERAL FUNCTIONAL DESCRIPTION A functional block diagram of the aiming light showing the mechanical, optical, electronic, and control functions is given in figure 1-10.
Functional Block Diagram, Aiming Light AN/PAQ-4A. 1-15
1-11. MECHANICAL FUNCTIONS Aiming light mechanical equipment consists of azimuth and elevation adjusters, a weapon adapter foot, and an ON/OFF switch. a. The purpose of the azimuth and elevation adjusters is to make fine tune adjustments in order to accurately zero the aiming light to the weapon. These adjustments are comparable to the M16 rifle daysight adjustments. The adjusters move the beam at a rate of just over .25 inches per click at 25 meters. b. The aiming light mounting foot attaches firmly to the weapon mounting bracket with the fastening screw. The mounting bracket (with aiming light attached) is then mounted to the weapon. c. The switch lever is used to turn the aiming light ON, OFF, and momentary ON. The momentary ON position is used to activate the aiming light when mounted on the M16A1/A2 rifle by applying thumb pressure to the switch and deactivate the aiming light by releasing the switch. On all other weapons, the switch is used in its ON position.
1-12. OPTICAL FUNCTIONS The optical components of the aiming light are the refractive lens and scattershield. a. The refractive lens projects the infrared light in a narrow, well-defined pulsating beam. b. The scattershield prevents off-axis detection by reducing off-axis radiation from the aiming light. For security, the scattershield should always be used when operating the aiming light. 1-13. ELECTRONIC CIRCUIT FUNCTIONS The aiming light incorporates a LED light source which produces a pulsing infrared beam when the switch is turned to the ON position. 1-14. CONTROL CIRCUIT FUNCTIONS The control circuit consists of wiring from the electronics circuits, through an ON/OFF switch to the batteries.
CHAPTER 2 OPERATING INSTRUCTIONS Para 2-1 2-2 2-3 2-4
Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Genral Instructions, PMCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preventative Maintenance Checks and Services Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Attachment Procedures, M16A1 and M16A2 Rifle . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Boresight Procedure, M16A1 and M16A2 Rifle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 Attachment Procedures, M60 Machine Gun., . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 Boresight Procedure, M60 Machine Gun . . . . . . . 2-9 Attachment Procedures, M136 (AT4) Launcher and Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 Boresight Procedures, M136 (AT4) Launcher and Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11 Extreme Weather Conditions . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 Operating Procedures for Unusual Weather Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 2-0 2-1 2-4 2-4 2-9 2-15 2-24 2-28 2-32 2-33 2-35 2-35
Section I. DESCRIPTION AND USE OF OPERATOR’S CONTROLS AND INDICATORS 2.1 CONTROLS AND INDICATORS You will need to know how to operate the following controls.
Figure 2-1. Controls and Indicators. 2.2 DESCRIPTION a. Azimuth and Elevation Adjusters. Both adjusters Change 1 2-1
can be turned by gripping the knurled knob between the thumb and forefinger and turning in either direction. During the boresighting confirmation, the adjusters will move the point of impact in the labeled direction at the rate of just over .25 inches per click at 25 meters. To prevent jamming, do not force the adjusters to rotate past their end of travel. b. ON/OFF Switch. (Fig. 2-2) The ON/OFF switch has three positions ON, OFF and momentary ON. An audible click will be heard when switch is turned ON or OFF.
Figure 2-2. Switch Positions for OFF, Momentary ON, and ON (bottom view). NOTE When the aiming light is mounted on the M16 rifle, it is used in the momentary ON position. 2-2
The ON/OFF switch lever is prevented from moving to the full ON position when the lever contacts the rifle handguard. The lever is held against the handguard during operation by pressure from the thumb and the lever returns to the OFF position when released. For other applications, the lever may be pressed to the full ON position where it is held on by the detent. c. Battery Cap. The battery or batteries are removed by gripping the battery cap by hand and turning in a counterclockwise (CCW ) direction. After installing or replacing battery/batteries as shown in figure 2-3, the battery cap is reinstalled by turning in a clockwise (CW) direction until seated finger tight.
Installation of Batteries. Change 1
Section Il. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) 2-3. GENERAL INSTRUCTIONS, PMCS (TABLE 2-1) a. Before operational checks. Always keep in mind the CAUTIONS and WARNINGS. Perform your column (B) PMCS checks prior to the equipment leaving its containment area or performing its intended mission. b. Operation checks. Always keep in mind the CAUTIONS and WARNINGS. Perform your column (D) PMCS checks when the equipment is being used in its intended mission. c. After you operate. Be sure to perform your column (A) PMCS checks after the equipment has been taken out of its mission mode or returned to its containment area. 2-4. PREVENTIVE MAINTENANCE CHECKS AND SERVICES PROCEDURES a. Your Preventive Maintenance Checks and Services (Table 2-1) lists the inspections and care of your equipment required to keep it in good operation condition. b. Use the Item No. column in your PMCS table to identify and record deficiencies on DA Form 2404 (Equipment Inspection and Maintenance Worksheet) when you fill out the form. 2-4
c. The Interval column of your PMCS table tells you when to do a certain check or service. d. The Items To Be Inspected column provides you a listing of the items to be inspected. a. The Procedures column of you PMCS table tells you how to do the required checks and services. Carefully follow these instructions. f. Equipment Is Not Ready/Available If: Column tells you when and why your equipment cannot be used. g. If your equipment does not perform as required, refer to Chapter 3 undet Troubleshooting for possible problems. Report any malfunctions or failures on Da Form 2404, or refer to DA Pam 738-750. h. Visually inspect each mounting bracket assembly (or mounting knob) for obvious damage or missing parts. Pay particular attention to stripped threads on the lever screw assembty and missing nuts and washers where applicable. If you are in doubt of the condition of the bracket assembly, or if the sight and bracket assembly cannot be installed as instructed, refer to higher level of maintenance.
Operator/Crew Preventive Maintenance Checks
e 2-1. Operator/Crew Preventive Maintenance Checks and Services (Cont.)
Operator/Crew Preventive Maintenace Checks
and Services (Cont.)
Section III. OPERATION UNDER USUAL CONDITIONS 2-5. ATTACHMENT PROCEDURES, M16A1 AND M16A2 RIFLE a. You must know how to attach the aiming light to the mounting bracket and then attach the bracket (with aiming light) to your weapon. b. Procedure for attaching the aiming light to M16A1/A2 rifle mounting bracket.
CAUTION Make sure your weapon is clear and on safe before proceeding. Step 1. Remove the aiming light and M16A1/A2 mounting bracket from the carrying bag. Step 2. insert batteries into battery compartment (Para. 3-5).
Step 3. Position the aiming light on the mounting bracket as shown in figure 2-4.
Figure 2-4. Attaching Aiming Light to M16A7/A2 Mounting Bracket. 2-10
Step 4. Secure the aiming light to the bracket by turning the fastening screw in a cw direction. NOTE Fastening screw must be firmly tightened by hand to secure aiming light to bracket, Do not use tools of any kind to tighten screw as damage to screw or aiming light may occur. Routinely check the tightness of the fastening and thumbscrew during the operation to assure that the aiming light is securely mounted to the rifle, c. Once the aiming light has been attached to the mounting bracket you are ready to attach bracket (with aiming light) to the M16A1/A2 rifle.
CAUTION Make sure your weapon is clear and on safe before proceeding. Step 1. Place the M16 rifle between your knees with the barrel forward.
Figure 2-5. Attaching Mounting Bracket to M16 Rifle. (Sheet 1 of 3) 2-12
Step 2. Insert the M16A1/A2 mounting bracket into the rifle handle. Make sure the alignment pin on the bracket is fully retracted and flush with the top surface of the bracket. If it is protruding, turn thumbwheel ccw to retract
Figure 2-5. Attaching Mounting Bracket to M16 Rifle. (Sheet 2 of 3) 2-13
Step 3. Adjust the mounting bracket to line up the alignment pin with the hole in rifle handle. Turn the thumbwheel cw to fully engage the alignment pin in the hold of the M16A1/A2 rifle handle. Using thumbwheel continue tightening until the aiming light and bracket are firmly mounted on the rifle.
Figure 2-5. Attaching Mounting Bracket to M16 Rifle. (Sheet 3 of 3) 2-14
2-6. BORESIGHT PROCEDURES, M16A1 AND M16A2 RIFLE a. The following boresight procedure should be performed before each mission to assure that the aiming light is accurately zeroed to the M16A1/A2 rifle. If the aiming light is being remounted on the same weapon to which it has been previously zeroed, skip to paragraph f below to confirm zero.
b. Prepare the 25 Meter Zeroing Target. Step 1. Mark the designated strike point 3 squares down and 3 squares to the right of the center of the zero target. (Fig. 2-6) Step 2. Shade in a 4x4 square region with the designated strike point in the center as shown in figure 2-6. This region is called the designated strike zone. Step 3. Attach the 25 meter zeroing target to a flat surface at 25 meters. c. Follow the mounting procedures in para 2-5 to securely mount the aiming light to the M16A1/A2 rifle. This aiming light will be called the “mounted aiming light” during this procedure. d. Prepare the mounted aiming light and borelight. NOTE If a second aiming light is not available, the mounted aiming light can be adjusted to the neutral position (used for the borelight) by following the procedure in para e., Step 1. After setting the neutral position, skip to para f. to confirm zero by firing. Step 1. Remove a second aiming light, batteries, boresight aperture and a boresighting mandrel from carrying bag. This aiming light will be called a borelight. Step 2. Insert batteries into the borelight and check for operation using the Night Vision Goggles in a darkened area. 2-16
24 METER ZEROING TARGET M16A2
1. ROTATE REAR SIGHT ELEVATION KNOB TO THE 8/3 SSETTING. THEN UP (RIGHT) ONE CLICK PAST THE 300 MARK FOR ZEROING AT 25 METERS. 2. AIM AT TARGET CENTER. ADJUST SIGHTS TO MOVE SHOT GROUP CENTER AS CLOSE AS POSSIBLE TO THE WHITE DOT IN THE CENTER OF THE TARGET, 3. AFTER COMPLETION OF THE 25-METER ZERO. ROTATE THE REAR SIGHT ELEVATION KNOB BACK ONE CLICK TO THE 300/800 METER MARK THE WEAPON WILL BE ZEROED FOR 300 METERS. CEZ111004
Target for use in Zeroing M16A1/A2 Marked with Designated Strike Point and Designated Strike Zone. 2-17
Step 3. Remove scattershield from both the mounted aiming light and the borelight. Screw on the boresight aperture to the front of both the mounted aiming light and borelight. (Fig. 2-7)
CEZIII010 Figure 2-7. Installation of Boresight Aperture.
Step 4. Screw the boresight mandrel into the battery cap of the borelight until it is fully seated. (Fig. 2-8)
CEZIII019 Figure 2-8. Installation of Bore-sight Mandrel. e. Align the borelight with rifle bore, and then align the aiming light with the borelight.
CAUTION Make sure your weapon is clear and on SAFE before proceeding.
Step 1. Rotate both the azimuth and elevation adjuster knobs fully clockwise (CW) to the end of travel. Now rotate each knob back 5 turns counterclockwise (CCW) and align the white dot on each knob with the front flange of the borelight,. The borelight is now in its neutral position (Fig. 2-9)
Figure 2-9. Adjuster Alignment Markings: Dot Aligned With Front Flange. Step 2. Turn the borelight to the fully ON position and insert it in the barrel of the M16A1/A2 rifle. (Fig. 2-10)
Figure 2-10. Placement of Borelight in M16A7/A2 Rifle Barrel. 2-20
Step 3. While wearing night vision goggles, sandbag or brace the rifle such that the borelight spot is held steady on the center of the 25 Meter Zeroing Target. NOTE If the beam spot is too dim to see with the night vision goggles, remove the boresight aperture from both the mounted aiming light and the borelight. Step 4. While observing the spot, rotate the borelight in the barrel of the rifle. If the spot does not move off the black silhouette in the center of the zeroing target, skip to Step 5, If the beam traces a circle larger than the black silhouette on the zeroing target while rotating the borelight in the barrel, the following adjustments must be made. ●
Hold the borelight in the barrel with the mounting foot in the 12 o’clock position, Rotate the borelight 1 /2 turn to the 6 o’clock position. Observe the movement of the spot before and after rotating the borelight. Rotate the azimuth and elevation adjusters in accordance with the following chart:
Direction of Adjuster Rotation Azimuth Elevation CW CW Left/Up CCW CW Left/Down CW CCW Right/Up CCW CCW Right/Down CW = Clockwise CCW = Counterclockwise 2-21
Movement of spot
NOTE ● The adjuster knobs move the beam at a rate of just less than one square (1/4inch) per click at 25 meters. ●
The number of adjuster clicks rotated should correspond to half the total distance the spot moved in each direction when the borelight was rotated 1/2 turn. (from 12 to 6 o’clock).
EXAMPLE: If the spot moves 8 squares (2 inches) to the right and 8 squares (2 inches) down when the borelight mounting foot is rotated from 12 o’clock to 6 o’clock, then the following adjustment should be made: Rotate the azimuth adjuster 4 clicks (4 squares) counterclockwise (CCW). ● Rotate the elevation adjuster 4 clicks (4 squares) counterclockwise (CCW). ● Repeat Step 4 until the spot no longer moves off of the black silhouette when the borelight is rotated 1/2 turn. ●
Step 5. With the rifle mounted or braced so that the borelight spot is on the center of the target, switch on the mounted aiming light. NOTE You should see two equally bright spots on the zero target. If one spot is much brighter than the other, check to make sure that the boresight aperture is on both the mounted aiming light and the borelight. 2-22
Step 6. Use the adjuster knobs to adjust the mounted aiming light spot until it lies at the 10 o’clock and touching position relative to the borelight spot. (Fig. 2-11)
Figure 2-11. Borelight and Mounted Aiming Light Spots. Step 7. REMOVE THE BORELIGHT FROM THE BARREL OF THE RIFLE. NOTE If there are any other aiming lights which need to be boresighted at this time, the same borelight can be used to save time. CAUTION You will now confirm zero with live firing f. Confirm zero. Step 1. From a firing position, switch on the mounted aiming light and position the spot in the center of the 25 meter zero target. 2-23
Step 2. When instructed, fire a 3-round shot group with the spot directly in the center of the target. Step 3. When instructed to check the target, walk down to the target and inspect the shot group fired. If 2 out of 3 rounds are within the designated strike zone, skip to Step 4. If not determine the number of clicks (1 click/ square) required to move the center of the shot group to the designated strike point. Repeat Steps 1 through 3 until two of the three rounds are in the designated strike zone. Step 4. The aiming light is now zeroed for 100 meters. Remove the boresight aperture and replace it with the scattershield. The aiming light/M16 rifle is ready for operation. 2-7. ATTACHMENT PROCEDURES, M60 MACHINE GUN a. The aiming light is attached to the M60 machine gun by first attaching the mounting bracket to the weapon and then attaching the aiming light to the mounting bracket.
b. Procedure for attaching the mounting bracket and aiming light to the M60 machine gun. (Fig. 2-12)
CEZlll028 Figure 2-12.
Mounting Bracket Assembly, M60
Step 1. Remove the M60 hinge pin latch and hinge pin from the cover assembly by pressing on the latch (open end of pin) with an empty cartridge case and separate the latch and pin. Place the pin latch in the aiming guides on the left side of the mounting bracket and press together.
Step 2. Position the mounting bracket assembly on top of the machine gun cover so that the holes in the front of the bracket align with the cover assembly pin holes. (Fig. 2-13)
Figure 2-13. Mounting Bracket Assembly M60 Attached to Machine Gun M60. Step 3. Insert the longer hinge pin supplied with the bracket through the bracket and cover assembly and secure by inserting the hinge pin latch. 2-26
Step 4. Loosen the wingnuts on both leg clamps and position the leg clamps under the cover assembly. Secure the mounting bracket by tightening the wingnuts firmly. NOTE The split washer should be next to the wing nut and the flat washer next to the bracket. Step 5. Install the aiming light on the M60 mounting bracket assembly by positioning it in the groove on top of the bracket so that the screw hole on the bracket is aligned with the screw hole on the aiming light mounting foot. Tighten the knob screw assembly to secure the aiming light to the bracket. Using the thumb and forefinger, the knob can be tightened firmly, without the need for tools of any kind.
2-8. BORESIGHT PROCEDURE, M60 MACHINE GUN a. Prepare the 25 Meter Zeroing Target. (Fig. 2-14) Step 1. Mark the designated strike point 11.2 cm (4.4 inches) down from the center of the zero target. Step 2. Shade in a 4 x 4 square region (3.6 cm x 4 cm) with the designated strike point in the center as shown in figure 2-14. This region is called the designated strike zone. NOTE You will notice that the area to be shaded around the designated strike point is off the grid lines of the 25 Meter Zeroing Target. As accurately as possible, you should outline this area on the flat surface under the grid lines of the Zeroing Target. Step 3. Attach the 25 Meter Zeroing Target to a Type E silhouette or a flat vertical surface. b. Mount the Aiming Light. Follow the mounting procedures in para 2-7 to secure[y mount the aiming light to the M60 Machine Gun. This aiming light will be called the “mounted aiming light” during this procedure. c. Prepare the mounted aiming light and the borelight. Follow paragraph 2-6d, steps 1 thru 4. The M60 boresight mandrel will be used in place of the M16A1/A2 boresight mandrel. d. Align the borelight with rifle bore, and then align the aiming light with the borelight. 2-28
25-METER ZEROING TARGET M16A2
Target for use in Zeroing M-60 Machine Gun Marked With Designated Strike Point and Designated Strike Zone. 2-29
CAUTION Make sure your weapon is clear and on safe before proceeding. Step 1. Follow the M16A1/A2 borelight procedures (para 2-6e. Steps 1-5) to align the borelight with the M60 machine gun barrel. Use the M60 mandrel in place of the M16A1/A2 mandrel to insert the borelight into the barrel of the M60. Step 2. After aligning the borelight with the M60 barrel, turn on the mounted aiming light and rotate the mounted aiming light adjuster knobs to superimpose the mounted aiming light beam spot on the borelight beam spot. Step 3. Rotate the mounted aiming light elevation adjuster knob 18 clicks down (counterclockwise) to move the point of impact down to the designated strike point. Step 4. REMOVE THE BORELIGHT FROM THE BARREL OF THE WEAPON. NOTE If there are any other aiming lights which require boresighting, the same borelight should be used to save time. CAUTION You will now confirm zero with live firing. e. Confirm zero. 2-30
Step 1. From a firing position, switch on the mounted aiming light and position the spot in the center of the 25 meter zero target. Step 2. When instructed, fire a 3-round shot group with the spot directly in the center of the target. Step 3. When instructed to check the target, walk down to the target and inspect the shot group fired. If 2 out of 3 rounds are within the designated strike zone, skip to Step 4. If not determine the number of clicks (1 click/ square) required to move the center of the shot group to the designated strike point and rotate the aiming light boresight adjuster knobs the required number of clicks. Repeat steps 1 through 3 until two of the three rounds are in the designated strike zone. Step 4. The aiming light is now zeroed with the M60 Machine Gun for 100 meters Remove the boresight aperture and replace it with the scattershield. The aiming light/M60 Machine Gun is ready for operation. Step 5. The infrared aiming light AN/PAQ-4A can also be mounted on and zeroed to most other individual and crew served weapons using brackets in Army inventory. See Appendix D Additional Authorized Items.
2-9. Attachment Procedure, M136(AT4) Launcher and Cartridge WARNING ●
Only M136(AT4) qualified personnel should install and use the mounting bracket aasembty. Conduct all M136 (AT4) operator preventive maintenance checks and services prior to installation of mounting bracket assembly. NOTE
All references to the M136 (AT4) Launcher and Cartridge are also applicable to the M287 9 mm Tracer Bullet Training Device. a. The aiming light is attached to the M136 (AT4) Launcher and Cartridge by first attaching the mounting bracket to the weapon and then attaching the aiming light to the mounting bracket. b. Procedure for attaching the mounting bracket and aiming light to the M136 (AT4) Launcher and Cartridge. (Fig. 2-14A and 2-14B) Step 1. Cradle M136 (AT4) in left arm. Step 2. Position support bracket with mounting rail on left side and the marking “FRONT’ over the rear sight.
Step 3. With the pivot bracket spread open, place support bracket against base of the rear sight housing and bottom on the shoulder strap boss. Step 4. Swing pivot bracket around the M136 (AT4) and secure by rotating the locking latch clockwise to engage the latch shaft. Step 5. Lever screw assembly must be located in front threaded screw hole when mounting the night sight. Step 6. Place aiming light in groove of the mounting rail so that the threaded screw hole in the base of the aiming light is aligned with the Iever screw assembly and tighten the lever screw assembly firmly.
Figure 2-14A. Mounting Bracket Assembly M136 (AT4) Attached to M136 (AT4) Launcher and Cartridge.
Figure 2-14B. Mounting Bracket Assembly M136 (AT4) Attached to M136 (AT4) Launcher and Cartridge.
2-10. Boresight Procedure, M136 (AT4) Launcher and Cartridge a. Select a stable position for the weapon. Step 1. Open M136 (AT4) front and rear sight covers. During limited visibility conditions the 7 mm peephole may be necessary for zeroing. Step 2. Set rear sight for 200 meters. b. Mount the Aiming Light. Verify the mounting procedure in para 2-9. This aiming light will be called the "mounted aiming light" during this procedure. c. Adjust azimuth and elevations knobs of the mounted aiming light to place the reticle aiming point approximately in the center of the field-of-view of the mounted aiming light. d. Select suitable target at 200 meters and align weapon to coincide with the aiming point on the target. e. Turn on AN/PAQ-4A. f. Without moving the weapon, adjust the mounted aiming light so that the 200 meter range marks coincide with the aiming point. g. Repeat procedures d and f until the mounted aiming light is foresighted to the weapon. h. Turn off AN/PAQ-4A 2-36
Section IV. OPERATION UNDER UNUSUAL CONDITIONS 2.11 EXTREME WEATHER CONDITIONS The use of BA-5567/U battery is recommended for arctic use. 2.12 OPERATING PROCEDURES FOR UNUSUAL WEATHER CONDITIONS. a. Fog or Frost. Lenses may fog over of frost up during cold rainy weather. (1) Remove scattershields. (Para 3-6) (2) Clean lens with lens paper. (Para 3-8) (3) Coat lens with antifogging compound.(Figure2-15) (4) Shake off excess compound and allow lens to dry. (5) Replace scattershield. (Para 3-7) b. Dusty of Sandy Area. (1) Do not point the aiming light into the wind. This keeps dust and sand from pitting or scratching the lens. (2) Cover as much of the aiming light as possible to prevent damage to external surfaces or controls. (3) Keep the textile bag closed except to remove or replace equipment. Change 1
Figure 2-15. Application of Antifogging Compound.
c. Rainy or Humid Conditions. (1) Use antifogging compound on the lens (Para 2-10a (3)). (2) Dry the aiming light thoroughly after exposure to rain or high humidity. (3) Keep the textile bag closed except to remove or replace equipment. (4) Do not store the aiming light in a wet or damp carrying bag. d. Salt Water Areas. (1) After exposure to salt water, clean the aiming light by dipping it into fresh water. (2) Dry all parts of the aiming light after removing all traces of salt water. e. Extreme Heat. The aiming light can be operated at high temperatures up to 123°F (51°C).
2-39 (2-40 blank)
CHAPTER 3 OPERATOR MAINTENANCE INSTRUCTIONS Para 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9
Page General. . . . . . . . . . . . . . . . . . . . . . . 3-1 Purpose of Troubleshooting. . . . . . . . . . 3-2 Troubleshooting Procedures . . . . . . . . . . . . 3-2 Procedures for Removing Batteries . . . . . 3-5 Procedure for lnstalling Batteries. . . . . . . . . . . . 3-6 Procedure for Removing and Inspecting Scattershield . . . . . . . . . . . . . . . . . . . . 3-7 Procedure for Installing Scattershield.. . . . . . 3-8 Procedure for Cleaning Lens . . . . . . . . . . . 3-9 Procedure for Cleaning Carrying Case 3-10 Section I.
OPERATOR TROUBLESHOOTING PROCEDURES 3-1. GENERAL You are required to maintain the aiming light and support equipment in good operational condition. This chapter presents maintenance instructions needed by you to help keep your equipment in good operating order. If these instructions do not restore the aiming light to full operation, return the aiming light to unit maintenance, Unit personnel are required to isolate and correct malfunctions of the scattershield and batteries. 3-1
3-2. PURPOSE OF TROUBLESHOOTING a. Purpose. The purpose of troubleshooting is to identify the most frequent equipment malfunctions, probable causes, and corrective actions required. b. Functional Check. In a darkened room or outside dark area, turn the aiming light OFF-ON switch to the ON position. Point the aiming light at a wall approximately 20 meters away and observe the light beam on the target with night vision goggles or equivalent. If the aiming light is operating properly, a sharp, well-defined circular spot of pulsing light will be present. The spot must be pulsing for proper operation. Be sure goggle focus and eyepiece diopter are properly adjusted when performing this check.
3-3. TROUBLESHOOTING PROCEDURES Information concerning equipment malfunctions and necessary corrective action you take is listed in Table 3-1. The table lists the common malfunctions which you may find during the operation or maintenance of the aiming light and support equipment. You should perform the tests, inspections, and corrective actions in the order listed. This manual cannot list all malfunctions that may occur, nor all tests, inspections, and corrective actions. If a malfunction is not listed or is not corrected by listed corrective actions, notify your supervisor.
CAUTION Operators are not authorized to open the aiming light except to remove and replace batteries, to remove and inspect the scatter shield, and to clean the outer surface of the lens.
Table 3-1. Troubleshooting MALFUNCTION Test or Inspection Corrective Action 1. INFRARED LIGHT BEAM FAILS TO COME ON Step 1. Check to see if scatter shield is completely plugged. Clean scatter shield (para3-6). Step 2. Check Batteries. Remove and replace (para 3-4 and 3-5). Step 3. Internal Failure. Report failure to unit maintenance. Return the aiming light to unit maintenance for replacement.
MALFUNCTION Test or Inspection Corrective Action
2. INFRARED LIGHT BEAM APPEARS WEAK Step 1. Check batteries. Remove and replace (para 3-4 and 3-5). Return the aiming light to unit maintenance for replacement. Step 2. Check to see if the scatter shield is partially plugged or honeycomb is deformed. Remove/clean/replace, as required (para 3-6). Step 3. Check to see if lens is dirty. Clean lens (para 3-7). Step 4. Check to see if lens is scratched or pitted. Report problem to unit maintenance. Return the aiming light to unit maintenance for replacement.
Section II. Operator Maintenance Procedures
WARNING Refer to WARNING notice in front of this manual before removing batteries.
3-4. PROCEDURE FOR REMOVING BATTERIES a. Unscrew battery cap by turning it ccw to gain access to batteries and battery compartment. b. To remove the BA-3058/U batteries simply tilt the battery compartment down and the batteries will fall out. c. To remove the BA-1567/U battery or the BA-5567/U battery grip edges of battery with thumb and forefinger and pull.
3-5. PROCEDURE FOR INSTALLING BATTERIES a. Make certain all contact surfaces are clean. Install either one military type battery, BA-1567/U, or one military type battery, BA-5567/U, or two BA-3058/U batteries. The BA-3058/U batteries may also be designated AA.
Installation of Batteries NOTE
Batteries BA-1587/U and BA-5567/U can be installed only one way with the nipple (negative -) to the left (fig. 3-l). The BA-3058/U (AA) batteries should be installed in accordance with the positive (+) and negative (-) marking on the aiming light battery compartment and in accordance with figure 3-1. b. Replace battery cap and tighten finger tight. 3-6
3-6. PROCEDURE FOR REMOVING AND inspecting a. Unscrew shield, scatter from aiming light by turning counterclockwise. b. Inspect for dented or bent honeycomb. If any such damage is found, turn shield, scatter in for replacement. c. Inspect for dust or clogged-up honeycomb. If honeycomb is dusty or clogged, clear and clean with water.
CAUTION Do not use any mechanical cleaning devices.
NOTE If honeycomb cannot be cleaned, replace it with the spare and return the damaged scattershield to unit support maintenance and get a replacement.
CEZlll026 Figure 3-2. Shield, Scatter Replacement
3-7. PROCEDURE FOR INSTALLING SHIELD, SCATTER. a. Replace shield, scatter and tighten finger tight.
CAUTION To avoid cross-threading, insert and turn the shield, scatter counterclockwise a half-turn, then screw it in, turning clockwise. b. Due to the self-tightening screw thread design in the AN/PAQ-4A, the shield, scatter should not be more than finger tight. 3-8
3-8. PROCEDURE FOR CLEANING LENS a. Remove shield, scatter (para 3-6). b. Clean lens with lens paper. Lens paper maybe dampened with water, (Fig, 3-3) c. Replace scattershield (para 3-7)
Figure 3-3. Cleaning Lens
3-9. PROCEDURE FOR CLEANING TEXTILE BAG a. Remove all items from textile bag. b. Turn upside down to remove loose particles of dirt. c. Wipe clean with a clean, dry, lint-free cloth.
CHAPTER 4 UNIT MAINTENANCE Para 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-9 4-10
Page Common Tools and Equipment ... . . . . .. . . . . . . .4-1 Repair Parts . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .. . . . 4-2 Unpacking . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-2 Checking Unpacked Equipment. . . . . . . . . . . . . . . 4-3 Repacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 General instructions Unit PMCS. . . . . . . . . . . . . 4-3 Scope Unit Maintenance.. . . . . . . . . . . . . . . . . . . . . . . . . 4-6 Tests and inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . 4-7 Removal and Replacement of Parts. . . . . . . . .. . . . . . 4-10
REPAIR PARTS, SPECIAL TOOLS, TEST, MEASUREMENT AND DIAGNOSTIC EQUIPMENT (TMDE), AND SUPPORT EQUIPMENT 4-1. COMMON TOOLS AND EQUIPMENT There are no tools or equipment required for unit maintenance personnel for servicing the AN/PAQ-4A. 4-1
4-2. REPAIR PARTS Repair parts are listed and illustrated in Appendix F, Repair Parts and Special Tools List. Maintenance procedures are provided in Sections III and II.
SERVICE UPON RECEIPT 4-3. UNPACKING CAUTION Carefully open shipping container. Do not puncture as damage to shipping and storage case may result. Unpack the AN/PAQ-4A from the shipping container as follows: a. Carefully open shipping container cushioning material. b. Remove shipping and storage case containing the AN/PAQ-4A. c. Save cardboard boxes and cushioning material for temporary storage or return shipments.
4-4. CHECKING UNPACKED EQUIPMENT When checking unpacked equipment, the following tasks should be performed: a. Inspect the equipment for damage incurred during shipment. If the equipment has been damaged, report the damage on SF 364, Report of Discrepancy (ROD). b. Check the equipment against the packing slip to see if the shipment is complete. See Appendix C and D. Report all discrepancies in accordance with the instructions of DA PAM 738-750. 4-5. REPACKING When packed for shipment, the shippping and storage case containing the AN/PAQ-4A is wrapped with cushioning material and placed in a close fitting cardboard box. Finally, the cardboard box is packed in a triple wall shipping box and metal banded.
UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) 4-6. GENERAL INSTRUCTIONS UNIT PMCS PMCS is the systematic care, inspection, and servicing of equipment to maintain it in serviceable condition, prevent breakdowns, and assure maximum operational 4-3
capability. Unit preventive maintenance checks and services (PMCS) are performed quarterly (Table 4-1). If your equipment fails cooperate, notify the next higher level of maintenance. a. Quarterly PMCS will be scheduled in accordance with procedures specified in DA PAM 738-750. b. The Item No. column in Table 4-1 shall be used as a source of item numbers for the TM number column on DA Form 2404 (Equipment Inspection and Maintenance Worksheet) in recording the results of the PMCS. c. The Item to be Inspected column lists the items to be inspected. d. if the equipment fails to meet the criteria in the Procedure column in Table 4-1, report the failure in accordance with the procedures specified in DA PAM 738-750, e. If the equipment must be kept in constant operation, check and service only those items that can be done without disturbing operation, Perform all checks and services when the equipment can be shut down. f. Some of the routine checks that may not be listed in the PMCS table are: cleaning, checking gasket, stowing items not in use, and checking for loose or missing parts. These checks should be done whenever needed.
Checks and Services Quarterly
Table 4-1. Unit Preventive Maintenance Schedule
Section IV. UNIT MAINTENANCE PROCEDURES
4-7. SCOPE — UNIT MAINTENANCE Unit maintenance consists of operational tests, inspections, troubleshooting, and the replacement of a limited number of parts. This category of maintenance does not require special test equipment or complex procedures. Authorized unit support maintenance is listed in the maintenance allocation chart (MAC), Appendix B. Aiming light failing to meet operational tests and inspections should be replaced. Failed units should be sent to depot as noted in paragraph 1-9.
4-8. TESTS AND INSPECTIONS a. Visual/mechanical inspection. Observe the unit for obviious mechanical damage such as deformed mounting brakcet, inoperative switch, scratched lens, broken or jammed azimuth or elevation adjusters, parted battery cap strap, and other evidence of damage or misuse which might indicate a need for repair. Replace as required (Para. 4-7). Conduct checkout of replacement and check proper operation of the aiming light. If operable, return to service. If not operable, continue troubleshooting (Table 4-2). 4-6
b. Functional Test. Conduct a functional test using a dark room or area away from the light. Use Night Vision Goggles AV/PVS-5 or AN/PVS-7 and observe the light spot. For proper operation, a sharp, well-defined circular spot of pulsing light should appear. The pulsing spot should be approximately 6.5 centimeters (2.5 inches) in diameter when projected on a wall at 25 meters. The aiming light must emit a pulsing light beam to operate properly. Check the operation of the azimuth and elevation adjusters as well (Para. 2–2a).
4-9. TROUBLESHOOTING PROCEDURES Information concerning equipment malfunctions and necessary corrective action you take are listed in tables 3-1 and 4-2. The table lists the common malfunctions which you may find during the operation or maintenance of the aiming light and support equipment. You should perform the tests, inspections, and corrective actions in the order listed. This manual cannot list all malfunctions that may occur, nor all tests, inspections, and corrective actions. If a malfunction is not listed or is not corrected by listed corrective actions, notify your supervisor.
Table 4-2. Unit Troubleshooting
MALFUNCTION Test or Inspection Corrective Action
1. INFRARED LIGHT BEAM FAILS TO COME ON Step 1. Check for missing or improperly installed batteries, Check for dead battery. Replace batteries. Step 2. Check for clogged scattershield. Clean or replace as necesary Step 3. ON-OFF switch does not function. Return aiming light to depot for replacement. 2. INFRARED LIGHT BEAM APPEARS WEAK Step 1. Check batteries. Remove and replace (para 3-4 and 3-5). Step 2. Inspect scattershield for dirt. Clean and/or replace if damaged. Step 3. Inspect lens for dirt or cracks. Clean lens with lens paper. Lens cracked, return AN/PAQ-4A to depot for replacement. 4-8
Unit Troubleshooting (Cont.)
MALFUNCTION Test or Inspection Corrective Action 3. AZIMUTH AND ELEVATION ADJUSTER INOPERATIVE. Check operation of adjusters as described in paragraph 2-2a. Adjusters can not be repaired or replaced. Return AN/PAQ-4A to depot for replacement.
4-10. REMOVAL AND REPLACEMENT OF PARTS Unit maintenance includes removal and replacement of assemblies. a. Scatterehield Removal and Replacement. See paragraph 3-6 for procedures. b. Battery Removal and Replacement. See paragraph 3-4 and 3-5 for procedures.
WARNING The military batteries used contain either mercury (BA-1567/U) or lithium (BA-5567/U), and should be handled in the following manner, 1. Do not dispose in fire. 2. Do not short circuit. 3. Return batteries to PDO for disposal in accordance with DLSC Handbook 41601.
c. Removal of Battery Cap. (Fig. 4-1) (1) Unscrew battery cap from back of aiming light. (2) Stretch retaining strap over groove in battery cap and remove.
Exploded View AN/PAQ-4A
d. Removal of Battery Retaining Strap (Fig. 4-1). (1) Remove screw and washer attaching retaining strap to aiming light. (2) Stretch retaining strap over groove in battery cap and remove. e. Replacement of Battery Retaining Strap. (1) Place retaining strap with large diameter hole over groove in battery cap. Pull and stretch strap to fit completely in groove. (2) Attach other end of retaining strap to aiming light using screw and washer. 4-11
f. Aiming Light. The aiming light shell contains the electronic, mechanical, optical and control functions and is not repairable. See paragraph 1-9 warranty instructions for replacement, Aiming light components are replaced as required and are listed in Appendix F, Repair Parts and Special Tools List.
APPENDIX A REFERENCES A-1. Scope This appendix lists all forms, technical manuals and miscellenaeous publications referenced in this manual. A-2. Forum SF 361
Transportation Discrepancy Report (TDR)
Report of Discrepancy (ROD)
Product Quality Deficiency Report
A-3. Technical Manuals TM 11-5855213-23P
Organizational and Direct Support Maintenance Repair Parts and Special Tools List for Night Vision Sight individual Served Weapon AN/PVS-4.
Operator’s Manual for Night Vision Goggles AN/PVS-5 and AN/PVS-5A.
TM 11-5855 261-10
Operator’s Manual, Aiming Light, infrared AN/PAQ-4.
Organizational and Direct Support Maintenance Manual, Aiming Light, infrared AN/PAQ-4. A-1
TM 11-5855 262-10-1
Operator’s Manual for Night Vision Goggles AN/PVS-7A.
TM 11-5855 262-10-2
Operator’s Manual for Night Vision Goggles AN/PVS-7B.
Procedures for Destruction of Electronics Materiel to Prevent Enemy Use (Electronics Command)
A-4. Miscellaneous Publications DA PAM 25-30 Consolidated Index of Army Publications and Black Forms. DA PAM 738- The Army Maintenance Management System (TAMMS) 750
APPENDIX B MAINTENANCE ALLOCATION
Section I. Introduction B-1. General This appendix provides a summary of the maintenance operations for the AN/PAQ-4A. It authorizes levels of maintenance for specific maintenance functions on repairable items and components and the tools and equipment required to perform each function. This appendix may be used as an aid in planning maintenance operations. B-2. Maintenance Function Maintenance functions will be limited to and defined as follows: a. Inspect. To determine the serviceability of an item by comparing its physical, mechanical, and/or electrical characteristics with established standards through examination. b. Test. To verify serviceability and to detect incipient failure by measuring the mechanical or electrical characteristics of an item and comparing those characteristics with prescribed standards. B-1
c. Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean (decontaminate), to preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids, or compressed air supplies. d. Adjust. To maintain, within prescribed limits, by bringing into proper or exact position, or by setting the operating characteristics to the specified parameters. e. Align. To adjust specified variable elements of an item to bring about optimum or desired performance. f. Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or test measuring and diagnostic equipments used in precision measurement. Consists of comparisons of two instruments, one of which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument being compared. g. Install. The act of emplacing, seating, or fixing into position an item, part, module (component or assembly) in a manner to allow the proper functioning of the equipment or system. h. Replace. The act of substituting a serviceable like type part, subassembly, or module (component or assembly) for an unserviceable counterpart. B-2
i. Repair. The application of maintenance services (inspect, test, service, adjust, align, calibrate, replace) or other maintenance actions (welding, grinding, riveting, straightening, facing, remachining, or resurfacing) to restore serviceability to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module (component or assembly), end item, or system. j. Overhaul. That maintenance effort (service/action necessary to restore an item to a completely serviceable/ operational condition as prescribed by maintenance standards in appropriate technical publications. Overhaul is normally the highest degree of maintenance performed by the Army. Overhaul does not normally return an item to like new condition. k. Rebuild. Consists of those services/actions necessary for the restoration of unserviceable equipment to a like new condition in accordance with original manufacturing standards. Rebuild is the highest degree of materiel maintenance applied to Army equipment. The rebuild operation includes the act of returning to zero those age measurements (hours, miles, etc.) considered in classifying Army equipments/components. B-3. Column Entries a. Column 1, Group Number. Column 1 lists group numbers, the purpose of which is to identify components, assemblies, subassemblies, and modules with the next higher assembly. B-3
b. Column 2, Component/Assembly. Column 2 contains the noun names of components, assemblies, subassemblies, and modules for which maintenance is authorized. c. Column 3, Maintenance Functions. Column 3 lists the functions to be performed on the item” listed in column 2. When items are listed without maintenance functions, it is solely for purposes of having the group numbers in the MAC and RPSTL coincide. d. Column 4, Maintenance Level. Column 4 specifies, by the listing of a “work time” figure in the appropriate subcolumn (s), the lowest level of maintenance authorized to perform the function listed in column 3. This figure represents the active time required to perform that maintenance function at the indicated level of maintenance. If the number or complexity of the tasks within the listed maintenance function vary at different maintenance levels, appropriate “work time” figures will be shown for each level. The number of taskhours specified by the “work time” figure represents the average time required to restore an item (assembly, subassembly, component, module, end item or system) to a serviceable condition under typical field operating conditions. This time includes preparation time, troubleshooting time, and quality assurance/quality control time in addition to the time required to perform the specific tasks identified for the maintenance functions authorized in the maintenance allocation chart. Subcolumns of column 4 are as follows: B-4
UNIT C — Operator/Crew O — Organizational INTERMEDIATE F — Direct Support H — General Support DEPOT D — Depot e. Column 5, Tools and Equipment. Column 5 specifies by code, those common tool sets (not individual tools) and special tools, test, and support equipment required to perform the designated function. f. Column 6, Remarks. Column 6 contains an alphabetic code which leads to the remark in Section IV, Remarks, which is pertinent to the item opposite the particular code. B-4. Tool and Test Equipment Requirements (Sect. Ill) a. Tool or Test Equipment Reference Code. The numbers in this column coincide with the numbers used in the tools and equipment column of the MAC. The numbers indicate the applicable tool or test equipment for the maintenance functions. b. Maintenance Level. The codes in this column indicate the maintenance level allocated the tool or test equipment. B-5
c. Nomenclature. This column lists the noun name and nomenclature of the tools and test equipment required to perform the maintenance functions. d. National/NATO Stock Number. This column lists the National/NATO stock number of the specific tool or test equipment. e. Tool Number. This column lists the manufacturer’s part number of the tool followed by the Federal Supply Code for manufacturers (5-digit) in parentheses.
B-5. Remarks a. Reference Code. This code refers to the appropriate item in Section II, column 6. b. Remarks. This column provides the required explanatory information necessary to clarify items appearing in Section II.
Infrared Aiming Light, AN/PAQ-4A Section II. Maintenance Allocation Chart for
SECTION III. TOOL AND TEST EQUIPMENT REQUIREMENTS FOR INFRARED AIMING LIGHT, AN/PAQ-F4A TOOL OR TEST EQUIPMENT REF CODE 1
MAINTENANCE LEVEL 0
NIGHT VISION GOGGLES AN/PVS-5A
NIGHT VISION GOGGLES AN/PVS-7A
NIGHT VISION GOGGLES AN/PVS-7B
TOOL KIT,ELECTRONIC EQUIPMENT TK-101/G
NATIONAL/NATO STOCK NUMBER 5180-00-610-8177
Section IV. Remarks
APPENDIX C COMPONENTS OF END ITEM LIST Section I. INTRODUCTION C-1. Scope This appendix lists integral components of and basic issue items for the AN/PAQ-4A to help you inventory items required for safe and efficient operation. C-2. General This Components of End Item List is divided into the following sections: a. Section II. Integral Components of the End Item. These items, when assembled, comprise the AN/PAQ4A and must accompany it whenever it is transferred or turned in. The illustrations will help you identify these items. b. Section III. Basic Issue Items. These are the minimum essential items required to place the AN/PAQ-4A in operation, to operate it, and to perform emergency repairs. Although shipped separately packed they must accompany the AN/PAQ-4A during operation and whenever it is transferred between accountable officers. The illustrations will assist you with hard-to-identify items. This manual is your authority to requisition replacement BII, based on TOE/MTOE authorization of the end item. C-0
C-3. Explanation of Columns a. Illustration. This column is divided as follows: (1) Figure number. Indicates the figures number for the illustration on which the item is shown. (2) item number. The number used to identify item called out in the illustration. b. National Stock Number. Indicates the National stock number assigned to the item which will be used for requisitioning. c. Description. Indicates the Federal item name and, if required, a minimum description to identify the item. The part number indicates the primary number used by the manufacturer, which controls the design and characteristics of the item by means of its engineering drawings, specifications, standards, and inspection requirements to identify item or range of items. Following the part number, the Federal Supply Code for Manufacturers (FSCM) is shown in parentheses. d. Location. The physical location of each item listed is given in this column. The lists are designed to inventory all items in one area of the major item before moving on to an adjacent area. e. Usable on Code. Not applicable. f. Quantity Required (Qty. Reqd). This column lists the quantity of each item required for a complete major item. g. Quantity. This column is left blank for use during an inventory, Under the Rcvd column, list the quantity you actually receive on your major item. The Date columns are for your use when you inventory the major item. C-1
Figure C-1. C-2
Components of End Item
SECTION II. COMPONENTS OF END ITEM AN/PAQ-4A (1) (2) (3) ILLUSTRATION NATIONAL DESCRIPTION (A) (B) STOCK FIG ITEM NUMBER NO NO PART NUMBER C-1
(5) USABLE ON CODE
AIMING LIGHT, INFRARED A3142001
BORESIGHT, APERTURE A3142009
MANDREL, BORESIGHT, M16A1/A2 A3142008-2
MOUNTING BRACKET,M16A1/A2 A3142004
(6) QTY REQD
(7) QUANTITY RCVD
Figure C-2. C-4
Basic Issue ltems
SECTION III. BASIC ISSUE ITEM AN/PAQ-4A (1) (2) (3) ILLUSTRATION NATIONAL DESCRIPTION (A) (B) STOCK FIG ITEM NUMBER NO NO PART NUMBER C-2
(5) USABLE ON CODE
BAG, CARRYING A3142003
CASE, SHIPPING AND STORAGE A3142002
(6) QTY REQD
(7) QUANTITY RCVD
APPENDIX D ADDITIONAL AUTHORIZATION LIST Section I. INTRODUCTION D-1. Scope This appendix lists additional items you are authorized for the support of the AN/PAQ-4A. D-2. General This list identifies items that do not have to accompany the AN/PAQ-4A and that do not have to be turned in to you by CTA, MTOE, TDA, or JTA. D-3. Explanation of Listing National stock numbers, descriptions, and quantities are provided to help identify and request the additional items you require to support this equipment.
TABLE D-1. ADDITIONAL AUTHORIZATION LIST, AN/PAQ-4A (1) NATIONAL STOCK NUMBER
(3) UNIT OF MEAS
(4) QTY AUTH
USABLE ON CODE
PART NUMBER AND FSCM ALIGNMENT DEVICE,OPTICAL GUN BORE A3142008-1 08107
BATTERY BA5567/U; 80058
BATTERY BA3058/U (AA) 80058
MOUNTING BRACKET ASSEMBLY, M60 SM-D-850340-1; 80063
MOUNTING BRACKET ASSEMBLY, M67 SM-D-850350-2; 80063
MOUNTING BRACKET ASSEMBLY, M72A1 SM-D-850360-1; 80063
MOUNTING BRACKET ASSEMBLY, M136(AT4) A3209601; 80063
DRY BATTERY LISTED IS USED WITH THE EQUIPMENT. IT WILL BE PRESHIPPING AUTOMATICALLY BUT IS TO BE REQUISITIONED IN QUANTITIES NECESSARY FOR THE PARTICULAR ORGANIZA TION IN ACCORDANCE WITH SB 11-6.
APPENDIX E EXPENDABLE SUPPLIES AND MATERIELS LIST Section 1. INTRODUCTION E-1. Scope This appendix lists expendable supplies and materiels you will need to operate and maintain the AN/PAQ+A. These items are authorized to you by CTA 50-970, Expendable Items (Except Medical, Class V, Repair Parts, and Heraldic Items). E-2. Explanation of Columns a. Column 1 — Item Number. This number is assigned to the entry in the listing and is referenced in the narrative instructions to identify the materiel (e.g.,"Use cleaning compound, item 5, App. D"). b. Column 2 — Level. This column identifies the lowest level of maintenance that requires the listed item. C — Operator/Crew O — Organizational Maintenance/Aviation Unit Maintenance F – Direct Support Maintenance/Aviation Intermediate Maintenance H — Qeneral Support Maintenance PIN: 067928-001 E-O
c. Column 3 — National Stock Number. This is the National stock number assigned to the item; use it to request or requisition the item. d. Column 4 — Description. indicates the Federal item name and, if required, a description to identify the item. The last line for each item indicates the Federal Supply Code for Manufacturer (FSCM) in parentheses followed by a part number. e. Column 5 — Unit of Measure (U/M). Indicates the measure used in performing the actual maintenance function, This measure is expressed by a two-character alphabetical abbreviation (e.g., ea, in, pr). if the unit of measure differs from the unit of issue, requisition the lowest unit of issue that will satisfy your requirements.
EXPENDABLE SUPPLIES AND MATERIELS LIST
(1) ITEM NO.
(3) NATIONAL STOCK NUMBER
(5) UNIT OF MEAS
PART NO. AND FSCM PAPER, LENS NNN-P-40, 81349
APPENDIX F REPAIR PARTS AND SPECIAL TOOLS LIST Section 1. INTRODUCTION F-1. Scope This manual lists and authorizes spares and repair parts; special tools; special test, measurement, and diagnostic equpment (TMDE); and other special support equipment required for performance of unit maintenance of the AN/PAQ-4A. It authorizes the requisitioning, issue, and disposition of spares, repair parts and special tools as indicated by the source, maintenance and recoverability (SMR) codes.
F-2. General This Repair Parts and Special Tools List is divided into the following sections: a. Section II. Repair Parts List. A list of spares and repair parts authorized by this RPSTL for use in the performance of maintenance. The list also includes parts which must be removed for replacement of the authorized parts. Parts lists are composed of functional groups in ascending numeric sequence, with the parts in each group listed in ascending item number sequence. Figure numbers are listed directly beneath the group header. b. Section Ill. Special Tools List. Not applicable. c. Section IV. Cross-Reference Indexes. A list, in National Item Identification Number (NIIN) sequence, of all National stock numbered items appearing in the listing, followed by a list in alphanumeric sequence of all part numbers appearing in the listings. National stock numbers and part numbers are cross-referenced to each illustration figure and item number appearance. The figure number and item number index lists figure and item numbers in numeric sequence and cross-references National stock number, Federal Supply Code for Manufacturer and part numbers. F-3. Explanation of Columns (Section II and III) a. Item No. (Column (1)). Indicates the number used to identify items called out in the illustration.
b. SMR Code (Column (2)). The source, maintenance, and recoverability (SMR) codes is a five-position code containing supply/requisitioning information, maintenance category authorization criteria, and disposition instruction, as shown in the following breakout: Source Code xx
1st two positions
How you get an item. Maintenance Code
Who can install, replace or use the item.
Who can do complete repair (see note) on the item.
Who determines dispostion action on an unserviceable item. F-3
NOTE Complete repair: Maintenance capacity, capability, and authority to perform all corrective maintenance tasks of the "Repair” function in a use/user environment in order to restore serviceability to a failed item. (1) Source Code. The source code tells you how to get an item needed for maintenance, repair, or overhaul of an end item/equipment. Explanations of source codes follows: Code PA PB PC PD PE PF PG
Explanation Stocked items; use the applicable NSN to request/requisition items with these source codes. They are authorized to the category indicated by the code entered in the third position of the SMR code. NOTE Items coded PC are subject to deterioration.
KD KF KB
Items with these codes are not to be requested/requisitioned individually. They are part of a kit which is authorized to the maintenance category indicated in the third position of the SMR code. The complete kit must be requisitioned and applied.
Code MO — Made at org/AVUM category MF — Made at DS/AVIM category — Made at MH GS category ML — Made at Specialized Repair Activity (SRA) MD — Made at Depot
Explanation Items with these codes are not to be requested/requisitioned individually. They must be made from bulk material which is identified by the part number in the description and Usable On Code (UOC) column and listed in the Bulk Material group of the repair parts list. If the item is authorized to you by the third position code of the SMR code, but the source code indicates it is made at a higher category, order the item from the high category of maintenance.
Code AO — Assembled by org/AVUM category AF — Assembled by DS/AVIM category AH – Assembled by GS category AL — Assembled by SRA AD — Assembled by Depot
Explanation Items with these codes are not to be requested/requisitioned individually. The parts that make up the assembled item must be requisitioned or fabricated and assembled at the category of maintenance indicated by the source code. If the third position code of the SMR code authorizes you to replace the item, but the source code indicates the item is assembled at a higher category, order the item from the higher category of maintenance.
Code Explanation XA – Do not requisition an “XA” coded item. Order its next higher assembly.
XB — If an “X6” item is not available from salvage, order it using the FSCM and part number given.
XC — Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturers part number.
XD — Item is not stocked. Order an “XD” coded item through normal supply channels using the FSCM and part number given, if no NSN is available.
NOTE Cannibalization or controlled exchange, when authorized, may be used as a source of supply for items with the above source codes, except for those source coded “XA” or those aircraft support items restricted by requirements of AR 750-1. (2) Maintenance Code. Maintenance codes tell you the category of maintenance authorized to USE and REPAIR support items. The maintenance codes are entered in the third and fourth positions of the SMR code as follows: a. The maintenance code entered in the third position tells you the lowest maintenance category authorized to remove, replace, and use an item. The maintenance code entered in the third position will indicate authorization to one of the following categories of maintenance. Code Application/Explanation C – Crew or operator maintenance done within organizational or aviation maintenance. O – Organizational or aviation unit category can remove, replace, and use the item, F – Direct support or aviation intermediate category can remove, replace, and use the item. H— General support category can remove, replace, and use the item. F-7
Code Application/Explanation L— Specialized repair activity can remove, replace, and use the item. D — Depot category can remove, replace, and use the item. (b) The maintenance code entered in the fourth position tells whether or not the item is to be repaired and identifies the lowest maintenance category with the capability to do complete repair (i.e., perform all authorized repair functions). This position will contain one of the following maintenance codes. NOTE Some limited repair may be done on the item at a lower categoy of maintenance, if authorized by the Maintenance Allocation Chart (MAC) and SMR codes. Code Application/Exp/anation O – Organizational or aviation unit is the lowest category that can do complete repair of the item. F— Direct support or aviation intermediate is the lowest category that can do complete repair of the item. H— General support is the lowest category that can do complete repair of the item. L— Specialized repair activity (designate the specialized repair activity) is the lowest category that can do complete repair of the item. F-8
Code Application/Explanation D — Depot is the lowest category that can do complete repair of the item. Z — Nonreparable. No repair is authorized. B— No repair is authorized. (No parts or special tools ar authorized for the maintenance of a coded item,) However, the item may be reconditioned by adjusting, lubricating, etc., at the user category. (3) Recoverability Code. Recoverability codes are assigned to items to indicate the disposition action on unserviceable items. The recoverability code is entered in the fifth position of the SMR Code as follows: Recoverability Code Application/Explanation Z— Nonreparable Item. When unserviceable, condemn and dispose of the item at the category of maintenance shown in the third position of SMR Code. O – Reparable Item, When uneconomically reparable, condemn and dispose of the item at organizational or aviation unit category. F – Reparable Item, When uneconomically reparable, condemn and dispose of the item at direct support or aviation intermediate category. H— Reparable Item. When uneconomically reparable, condemn and dispose of the item at general support category. F-9
Code Application/Explanation D—
Reparable Item. When beyond lower category repair capability, return to depot. Condemnation and disposal of item not authorized below depot category. Reparable Item. Condemnation and disposal not authorized below specialized repair activity (SRA). Item requires special handling or condemnation procedures because of specific reasons (e.g., precious metal content, high dollar value, critical material, or hazardous material). Refer to appropriate manuals/directives for specific instructions.
c. FSCM (Column (3)). The Federal Supply Code for Manufacturer (FSCM) is a 5-digit numeric code which is used to identify the manufacturer, distributor, or Government agency, etc., that supplies the item. d. Part Number (Column (4)). Indicates the primary number used by the manufacturer (individual, company, firm, corporation, or Government activity), which controls the design and characteristics of the item by means of its engineering drawings, specifications, standards, and inspection requirements to identify an item or range of items. NOTE When you use a NSN to requisition an item, the item you receive may have a different part number from the part ordered. F-10
e. Description and Usable on Code (UOC) (Column (5)). This column includes the following information. (1) The Federal Item name and, when required, a minimum description to identify the item. (2) The statement “END OF FIGURE” appears just below the last item description in Column (5) for a given figure in both section II and section III. f. Quantity (Column (6)). Indicates the quantity of the item used in the breakout shown on the illustration figure, which is prepared for a functional group, subfunctional group, or an assembly. A “V” appearing in this column in lieu of a quantity indicates that the quantity is variable and the quantity may vary from application to application. F-4. Explanation of Columns (Section IV) a. National Stock Number (NSN) Index. (1) Stock number column. This column lists the NSN by national item identification number (NIIN) sequence. The NIIN consists of the last nine digits of the NSN. When using this column to locate an item, ignore the first four digits of the NSN. When requisitioning items use the complete NSN (13 digits). (2) Fig. column. This column lists the number of the figure where the item is identified/located. The illustrations are in numerical sequence in sections II and III.
(3) Item column. The item number identifies the item associated with the figure listed in the adjacent Fig. column. This item is also identified by the NSN listed on the same line. b. Part Number Index. Part numbers in this index are listed by part number in ascending alphanumeric sequence. (1) FSCM column. This column lists the Federal supply code for manufacturer (FSCM). (2) Part number column. This column indicates the part number assigned to the item. (3) Stock number column. This column lists the National stock number for the associated part number and manufacturer identified in the part number and FSCM columns to the left. (4) Fig. column. This column lists the number of the figure where the item is identified/located in sections II and III. (5) Item column. The item number is that number assigned to the item as it appears in the figure referenced in the adjacent figure number column. c. Figure and Item Number Index. (1) Fig. column. This column lists the number of the figure where the item is identified/located in sections II and III. (2) Item column. The item number is that number assigned to the item as it appears in the figure referenced in the adjacent figure number column. F-12
(3) Stock number column. This column lists the National stock number for the item. (4) FSCM column. The Federal supply code for manufacturer (FSCM) is a 5-digit numeric code used to identify the manufacturer, distributor, or Government agency, etc. that supplies the item. (5) Part number column. Indicates the primary number used by the manufacturer (individual, firm, corporation, or Government activity), which controls the design and characteristics of the item by means of its engineering drawings, specifications, standards, and inspection requirements to identify an item or range of items. F-5. Special Information National stock numbers (NSN’s) that are missing from P source coded items have been applied for and will be added to this TM by future changes/revisions when they are entered in the Army Master Data File (AMDF). Until the NSN’s are established and published, submit exception requisitions to: Commander, US Army Communications-Electronic Command and Fort Monmouth, ATTN: AMSEL-LC-MM, Fort Monmouth, NJ 07703-5000 for the part required to support your equipment.
F-6. How to Locate Repair Parts. a. When National stock number or part number is not known: (1) First. Using the table of contents, determine the assembly group or subassembly group to which the item belongs. This is necessary since figures are prepared for assembly groups and subassembly groups, and listings are divided into the same groups. (2) Second. Find the figure covering the assembly group or subassembly group to which the item belongs. (3) Third. Identify the item on the figure and note the item number. (4) Fourth. Refer to the Repair Parts List for the figure to find the part number for the item number noted on the figure. (5) Fifth. Refer to the Part Number Index to find the NSN, if assigned. b. When National stock number or part number is known. (1) First. Using the index of National stock numbers and part numbers, find the pertinent National stock number or part number. The NSN index is in National item identification number (NIIN) sequence (Para. F-4a(1)). The part numbers in the part number index are listed in ascending alphanumeric sequence (Para. F-4b). Both indexes cross-reference you to the illustration figure and item number of the item you are looking for. F-14
(2) Second. After finding the figure and item number, verify that the item is the one you’re looking for, then locate the Item number in the repair parts list for the figure. F-7. Abbreviations. Not applicable.
Aiming Light, infrared AN/PAQ-4A
SECTION II (1) ITEM NO
(2) SMR CODE
TM11-5855-297-12&P (3) CAGEC
(4) PART NUMBER
DESCRIPTION AND USABLE ON CODES (UOC)
GROUP 00 AIMING LIGHT,INFRARED AN/PAQ-4A FIGURE F-1 1
2 3 4 5 6
PBOZO PAOZZ PAOZZ PAOZZ PCOZA
54490 54490 54490 54490 80058
A3142002 A3142003 A3142004 A3142008-2 BA-5567/U
AIMING LIGHT ASSEMB (SEE FIGURE 2 FOR PARTS BREAKDOWN) CASE,SHIPPING BAG,TEXTILE BRACKET,MOUNTING MANDREL M16 BATTERY (1) NONRECH (RETURN TO DRMO FOR DISPOSAL) BATTERY,PRIMARY (RETURN TO DRMO FOR DISPOSAL) BATTERY, NONRECHARG (RETURN TO DRMO FOR DISPOSAL) BORESIGHT END OF FIGURE
1 1 1 1 1 1 1 2 1
Aiming Light Assembly
SECTION II (1) ITEM NO
(2) SMR CODE
TM11-5855-297-12&P (3) CAGEC
(4) PART NUMBER
DESCRIPTION AND USABLE ON CODES (UOC)
GROUP 01 AIMING LIGHT ASSEMBLY FIGURE F-2 1 2 3 4 5 6
PAOZZ XAOZA PAOZZ PAOZZ PAOZZ PAOZZ
54490 54490 54490 96906 80205 54490
A3142010 A3142020 A3142029 MS24630-2 NAS620C-6 A3142026
SHIELD,SCATTER AIMING LIGHT CAP,BATTERY SCREW,TAPPING,THREA WASHER,FLAT RETAINER END OF FIGURE
1 1 1 1 1 1
TM 11-5855-297-12&P CROSS-REFERENCE INDEXES NATIONAL STOCK NUMBER INDEX
6135-00-485-7402 5310-00-773-7624 6135-00-935-2587 5305-00-959-1086 6135-01-090-5365 5895-01-314-6166 5895-01-314-6168
F-1 F-2 F-1 F-2 F-1 F-1 F-1
7 5 8 4 6 1 2
TM11-5855-297-12&P CROSS-REFERENCE INDEXES NATIONAL STOCK NUMBER INDEX
6135-00-485-7402 5310-00-773-7624 6135-00-935-2587 5305-00-959-1086 6135-01-090-5365 5895-01-314-6166 5895-01-314-6168
F-1 F-2 F-1 F-2 F-1 F-1 F-1
7 5 8 4 6 1 2
54490 54490 54490 54490 54490 54490 54490 54490 54490 54490 80058 80058 80058 96906 80205
A3142001 A3142002 A3142003 A3142004 A3142008-2 A3142009 A3142010 A3142020 A3142026 A3142029 BA-1567/U BA-3058/U BA-5567/U MS24630-2 NAS620C-6
TM11-5855-297-12&P CROSS-REFERENCE INDEXES PART NUMBER INDEX STOCK NUMBER 5895-01-314-6166 5895-01-314-6168
6135-00-485-7402 6135-00-935-2587 6135-01-090-5365 5305-00-959-1086 5310-00-773-7624
F-1 F-1 F-1 F-1 F-1 F-1 F-2 F-2 F-2 F-2 F-1 F-1 F-1 F-2 F-2
1 2 3 4 5 9 1 2 6 3 7 8 6 4 5
F-1 F-1 F-1 F-1 F-1 F-1 F-1 F-1 F-1 F-2 F-2 F-2 F-2 F-2
1 2 3 4 5 6 7 8 9 1 3 4 5 6
TM11-5855-297-12&P CROSS-REFERENCE INDEXES FIGURE AND ITEM NUMBER INDEX STOCK NUMBER CAGEC 5895-01-314-6166 5895-01-314-6168
6135-01-090-5365 6135-00-485-7402 6135-00-935-2587
54490 54490 54490 54490 54490 80058 80058 80058 54490 54490 54490 96906 80205 54490
PART NUMBER A3142001 A3142002 A3142003 A3142004 A3142008-2 BA-5567/U BA-1567/U BA-3058/U A3142009 A3142010 A3142029 MS24630-2 NAS620C-6 A3142026
THE METRIC SYSTEM AND EQUIVALENTS