330D - Technical NPI

SERV7106-02 Vol. 2, No. 2 February 2006

GLOBAL SERVICE LEARNING TECHNICAL PRESENTATION

330D HYDRAULIC EXCAVATOR INTRODUCTION

New Product Introduction (NPI)

330D HYDRAULIC EXCAVATOR INTRODUCTION AUDIENCE Service personnel who understand the principles of machine systems operation, diagnostic equipment, and testing and adjusting procedures.

CONTENT This presentation provides new and different New Product Introduction (NPI) information on the 330D Hydraulic Excavator. This presentation may be used for self-paced and self-directed training. The 330D will be available in worldwide markets early in 2006.

OBJECTIVES After learning the information in this presentation, the technician will be able to: 1. locate and identify the new major components on the 330D Hydraulic Excavator, and 2. explain the operation of the new components in the system.

REFERENCES 330D Hydraulic Excavator Specalog 330D Hydraulic Excavator Specifications Manual 330D Hydraulic Excavator Hydraulic System - Systems Operations Manual 330D Hydraulic Excavator Test and Adjust Manual 330D Hydraulic Excavator Parts Book 330D Hydraulic Excavator Tool Control Systems Operation / Troubleshooting / Testing and Adjusting Machine Monitoring System - Systems Operation

Estimated Time: 1 Hour Visuals: 40 Handouts: 4 Form: SERV7106-02 Date: Vol. 2, No. 2, 2006 © 2006 Caterpillar Inc.

AEHQ5667 RENR9583 RENR9584 RENR9585 SEBP4139 RENR7389 RENR8068

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TABLE OF CONTENTS INTRODUCTION ..................................................................................................................5 Similarities and Differences .............................................................................................6 MACHINE WALK-AROUND...............................................................................................7 OPERATOR'S STATION......................................................................................................13 ENGINE................................................................................................................................24 HYDRAULIC SYSTEM ......................................................................................................27 MAINTENANCE ITEMS ....................................................................................................42 TOOL CONTROL SYSTEM ...............................................................................................43 CONCLUSION.....................................................................................................................46 HYDRAULIC SCHEMATIC COLOR CODE.....................................................................47 HANDOUTS.........................................................................................................................48 POSTTEST ...........................................................................................................................49 POSTTEST ANSWER KEY ................................................................................................51

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330D HYDRAULIC EXCAVATORS INTRODUCTION

© 2006 Caterpillar Inc.

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INTRODUCTION The 330D is a new model from Caterpillar and is a direct replacement for the 330C Hydraulic Excavator. The 330D was introduced in February 2006. The 330D operating weight is approximately 36 151 Kg (79,700 lbs) for a long undercarriage machine equipped with Reach Boom, R3.9DB Stick, 1.19 m3 (1.56 yd3) GP bucket, and 800 mm (32 in.) shoes. The 330D fits in the 30 metric ton class of excavators and is a versatile machine capable of performing a wide range of tasks by using the various work tools available. The presentation discusses the component locations and systems operation of the 330D Hydraulic Excavator. Basic engine and machine component locations will be discussed. The travel system and implement hydraulics will also be covered. There are different machine arrangements available, including: - 330D L (330D excavator with a long, fixed standard width undercarriage) - 330D LN (330D excavator with a long, fixed narrow width undercarriage) The customer can choose between two booms, six sticks, and several bucket sizes, based on the arrangement chosen.

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SIMILARITIES AND DIFFERENCES FEATURES

DIFFERENT

Machine Appearance

SIMILAR

SAME

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Operator Station

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Engine

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Implement Hydraulic System

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Main Hydraulic Pumps

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Monitoring System

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Maintenance Items

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Tool Control Systems

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Machine ECM

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Travel System

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Undercarriage

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Similarities and Differences The above chart displays the similarities and differences between the 330D and the 330C. New and improved features include: - Cab and styling - C9 ACERT™ technology engine - Main hydraulic pumps - Monitoring system

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MACHINE WALKAROUND - Stick (1) - Boom (2) - Operator station (3) - Engine access cover (4) - Access door to air cleaner and battery compartment (5) - Access door to radiator compartment (6) - Counterweight (7)

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The air cleaner and battery compartment includes the following components: - Machine and Tool Control ECM (1) - Air conditioning condenser and receiver (2) - Window washer reservoir (3) - Master disconnect switch and circuit breakers (4) - Dual element, radial seal air filter (5) - Ether start aid solenoid (6) - Batteries (7)

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The radiator access compartment is located in front of the counterweight. The door is hinged on the right and has a locking latch on the left side to keep it closed. This door provides access for cleaning some of the cooling system components and servicing some of the fuel system and cooling system components. - Hydraulic oil cooler (1) - Fuel pressure sensors (2) - Fuel priming pump (3) (will be changed to electric) - Fuel filter (4) - Pattern change valve (5) - Air to Air After Cooler (ATAAC) (6) - Fuel water separator base (7) - Radiator (8) - Engine coolant overflow bottle (9) - Fuel water separator (10)

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This illustration shows access to the top of the machine from the right side. The engine access cover (1) allows access to the engine from the top of the machine. The hydraulic tank (2) is located between the pump compartment and the diesel fuel tank on the right side of the machine and is accessed from the top of the machine. The diesel fuel filler cap (3) is accessed from the top of the machine. A boom lowering check valve (4) is mounted on each boom cylinder. The storage compartment (5) is located in the front of the machine. The step and hand rail (6) at the right front of the machine can be used for access to the top of the machine.

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The illustration shows the pump compartment on the right side of the machine. Some of the visible components are: - Quick coupler solenoid valve (1) - Engine oil S•O•S port (2) - Engine oil filter (3) - Fan pump (4) - Medium pressure circuit pump (5) - Medium pressure solenoids (6) - Pressure taps for auxiliary tool solenoids (7) - Pilot pump (8) - Pilot filter (9) - Pilot system S•O•S port (10) - Case drain filter (11)

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Additional visible components are: - Power shift solenoid and proportional reducing valve (PSPRV) (12) - Cooling fan pump regulator (13) - Cooling fan pump regulator flow adjustment (14) - Right pump (15) - Left pump (16) - Left pump swashplate minimum angle adjustment (17) - Power shift pressure port (18)

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OPERATOR'S STATION The 330D contains a newly designed cab and introduces a new operator's station with improved visibility and operator comfort. For operator comfort the new cab provides wider visibility. Inside the cab is an available fully adjustable air suspended seat with side-to-side shock absorption, which provides maximum operator comfort. The new "D" series monitor provides increased functionality for the operator. Conveniently placed switches, gauges, information display, and controls improve operator comfort, awareness, and efficiency. The fuse panel is relocated to the left side of the lunch box compartment behind the operator’s seat for easy access. A 24 volt AM FM radio is standard in the right console.

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The hydraulic activation lever (1) has been redesigned for the 330D, however, its purpose is still the same. With the lever in the DOWN position (shown), the hydraulic activation solenoid is in the de-activated position. No hydraulic functions are available with the lever in the down position. The ground level emergency engine shutoff switch (2) is now located on the bottom of the seat mount. The shutoff switch will shut off the engine without having to climb into the cab. Once the shutoff switch is turned ON and then OFF, the key start switch must be cycled for the machine to operate again.

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The 330D monitor has been updated. The 330D shares this new monitor with the 320D, 323D, 324D, 325D, 345C, 365C, and the 385C machines. The monitor is a full color Liquid Crystal Display (LCD) that displays the various parameters of the machine. The monitor components are: - Alert Indicator (1) - Clock (2) - Fuel Gauge (3) - Hydraulic Oil Temperature Gauge (4) - Engine Speed Dial Indicator (5) - Engine Coolant Temperature Gauge (6) - Operating Hours (7) - Work Tool Indicator (8)

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The monitor contains eight buttons that control navigation on the monitor screen. The four directional button are left (1), up (2), down (3), and right (4). The directional buttons navigate the cursor through the various screens. The four navigational buttons are home (5), menu (6), back (7), and OK (8). The button functions are different on the 330D Monitor than what they are on the 330C Monitor. For additional information on the operation of the monitor, refer to: - RENR8068, Machine Monitoring System - Systems Operation

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All of the operator functions are incorporated into the redesigned right side of the operator's station. They are: - Engine speed dial switch (1) - Key start switch (2) - Cigar lighter (3) - Soft switch panel (4) - Rocker switches (5) - HVAC controls (6) - Radio (7)

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The soft switch panel includes switches that either turn a function on/off or allow the operator to toggle through different modes of the selected function. The soft switches provide the operator with the following functions: Two-speed travel (1) When the button is pushed the travel speed is toggled between low and auto. - The rabbit indicator indicates auto speed. - The tortoise indicator indicates low speed. Automatic Engine Speed Control (AESC) Switch (2) The AESC function automatically reduces engine speed while there is no hydraulic demand, which reduces noise and fuel consumption. - The AESC switch disables and enables the AESC function. - The first stage AESC reduces the engine speed by 100 rpm after there has been no hydraulic demand for approximately three seconds. - The second stage AESC reduces the engine rpm to approximately 1300 rpm after there has been no hydraulic demand for an additional three seconds. - The second stage AESC delay times and rpm can be changed using the monitor or Caterpillar Electronic Technician (Cat ET).

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Travel alarm cancel (3) The travel alarm cancel switch is a momentary two-position switch. - The travel alarm sounds when travel is detected. - The travel alarm stops immediately if the travel alarm cancel switch is depressed. - The travel alarm switch is reset every time the travel pressure switch opens. Work tool switch (4) The work tool switch will display the selected work tool on the monitor display. Press the switch repeatedly to change the selected work tool. When the desired work tool is highlighted in the monitor display, press the "OK" button on the monitor to select the work tool shown. Work lights (5) The work lights switch toggles between the different work light combinations. - Pattern 1 - Chassis work lights and cab work lights. - Pattern 2 - Chassis work lights, cab work lights, and boom work lights. Upper window wipers (6) The wiper switch toggles between the different modes of the wipers. - Six second delay. - Three second delay. - Continuous operation. - Off. Upper window washer (7) The windshield washer fluid switch is an ON/OFF switch. Heavy lift (8) The heavy lift mode can be selected to boost lifting capability and provide improved controllability of heavy loads. - When heavy lift is turned on, the main relief valve maximum pressure increases from approximately 35,000 kPa (5076 psi) to 36,000 kPa (5221 psi), making it possible to operate at the high pressure. - In heavy lift mode, the maximum engine speed is limited to engine speed dial 6 (1510 ± 90 rpm). - Hydraulic horsepower maximum output is reduced to 60%.

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The toggle and rocker switch panel contains switches that control additional functions: Quick coupler lock control (1) The quick coupler lock control switch is a spring centered toggle switch. - The top position locks the quick coupler. - The bottom position unlocks the quick coupler. Fine swing control (2) The fine swing control switch is a two-position rocker switch. - The top position activates fine swing control. Fine swing control improves the swing control during swing deceleration. - The bottom position deactivates fine swing control. Rear window washer (3) The rear window washer fluid switch is a two-position rocker switch. - The top position activates the windshield washer fluid. - The bottom position deactivates the windshield washer fluid.

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Rear window wiper (4) The rear window wiper switch is a two-position rocker switch. - The top position activates the wiper. - The bottom position deactivates the wiper.

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The back-up switches are located behind the right armrest. The right switch (1) controls the engine rpm while the Back-up Mode is active. Holding the right switch in the DOWN position decreases the engine rpm. Holding the right switch in the UP position increases the engine rpm. The left switch (2) activates/deactivates the Back-up Mode. When Back-up Mode is active, a fixed power shift pressure is provided to the pumps. The fixed power shift pressure limits maximum pump output and allows the machine to continue operating in a Derate Mode. Machine productivity will be limited while the machine is in Back-up Mode. The diagnostic connector (3) is located inside of the operator's station behind the right armrest, beside the back-up switches. The HVAC control ECM (4) is also located below the right console.

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The fuse panel for the 330D has been relocated to the left side of the lunch box panel behind the operator's seat.

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ENGINE The 330D is equipped with a C9 ACERT™ Engine (1). It is rated at 200 kW (268 hp) at 1800 rpm. ACERT™ Technology offers better fuel economy and reduced wear. Also visible in the photo are: - engine oil dipstick (2) - inlet air heater (3). - engine oil fill (4) - S•O•S coolant sampling valve (5)

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The 330D engine fan is now hydraulically driven by a fixed displacement motor (arrow) that is supplied oil from the fan pump. Fan speed is varied to provide optimized cooling. The optimum fan speed is calculated using engine coolant temperature and hydraulic oil temperature. Case drain oil from the fan motor is combined with the case drain oil from the swing and travel motors. Return oil from the fan motor is sent to the return filters and into the hydraulic tank. An internal makeup valve in the fan motor is used to prevent cavitation when flow from the fan pump stops. The direction of the engine fan can be reversed on machines equipped with the reversible fan option. The fan motor rotation can be changed with the monitor. The reversal of the fan motor is used to clear debris and dust from the radiator and hydraulic oil cooler.

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The fan pump and engine oil filter are located in the hydraulic pump compartment at the right rear of the machine. Shown in this photo are: - engine oil S•O•S port (1) - engine oil filter (2) - fan pump driven off the right pump (3)

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MAIN HYDRAULIC SYSTEM Stick Cylinder Bucket Cylinder Swing Motor

Main Control Valve Group

Pilot Control Valves

Priority Valves

Pilot Manifold

Pilot Pump Fan Motor

Boom Cylinders

Travel Motors

Main Hydraulic Pumps

M Fan Pump

Tank

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HYDRAULIC SYSTEM The 330D uses a negative flow control (NFC) hydraulic system. The main control valve is similar to the 330C main control valve. The main hydraulic pumps are different from the 330C. The engine fan is now hydraulically driven. The engine fan is mounted on a fixed displacement motor. The variable displacement fan pump, located in the pump compartment, sends hydraulic oil to turn the fan motor. The 330D continues using many of the "C" excavator features, such as automatic priorities and tool control systems.

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The pilot pump (arrow) is driven off the left hydraulic pump. The pilot pump draws oil from the main pump suction line. The oil is sent to the pilot filter and then to the pilot system.

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Pilot system components shown in this photo are: - pilot oil filter (1) - hydraulic oil S•O•S test port (2) - pilot oil pressure test port (3) - pilot system pressure relief valve (4)

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The 330D pilot manifold is the same as the "C" pilot manifold. The pilot manifold is accessible by removing the cover plate under the machine, behind the swing bearing. The manifold is located directly below the main control valve. Pilot manifold components visible are: - Two-speed travel solenoid (1) - Swing brake solenoid (2) - Hydraulic activation valve (3) - Hydraulic activation solenoid (4)

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The 330D uses automatic priorities for certain functions based on the position of the joysticks. The boom priority (1) and the swing priority (2) pressure reducing valves are located behind the swing bearing on the left side of the machine. The boom priority PRV provides boom up priority over the stick in function. The swing priority PRV provides swing priority over the stick in or stick out function.

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The 330D has a pilot operated, two stage main relief valve (arrow) located on the top center of the main control valve. The relief valve settings are 35000 ± 490 kPa (5076 ± 71 psi) for implement/travel and 36000 ± 490 kPa (5220 ± 71 psi) for heavy lift mode. The high pressure setting for heavy lift must be correctly adjusted before adjustments can be made for implement/travel settings. Refer to the Testing and Adjusting manual RENR9585 (Aurora and Akashi build) or RENR9678 (Gossilies build) for the proper procedure on setting the main relief valve.

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Two travel pressure switches for left and right travel (not shown) and the swing/implement pressure switch (arrow), are located under the cab. The pressure switches are activated by pilot oil from the control valves in the cab. The switches close at 490 ± 49 kPa (71 ± 7 psi) and open at 290 ± 0 kPa (42 ± 0 psi). The pressure switches are inputs to the Machine and Tool Control ECM. The Machine and Tool Control ECM uses these inputs to tell when a hydraulic function has been activated and will turn the Automatic Engine Speed Control (AESC)/one touch low idle back to the current speed dial setting. When only the swing/implement pressure switch is activated, the Machine and Tool Control ECM will release the swing brake. When all three pressure switches are activated, the Machine and Tool Control ECM will energize the straight travel solenoid.

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Travel Motor (Right)

Travel Motor (Left) High Pressure Line

Swing Motor

Single

Single Double

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330D HYDRAULIC SCHEMATIC NEUTRAL

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The 330D uses a new Kawasaki designed main hydraulic pump group (3) rated at 2 x 280 L/Min (2 x 74 gpm). The pump group is different from the pump group used on the 330C, however it continues using an NFC control system. This pump group is similar to the pump group used on the 345C. The right pump (4) is driven by the engine via a flexible coupling. The left pump (5) is driven directly off the right pump. Each pump rotating group has its own regulator. The regulators are used to adjust the output flow of the pumps. Each pump rotating group also has its own pressure tap and pressure sensor. A power shift PRV (2) is mounted on the top, center of the pump group case. The power shift PRV uses pilot system oil and sends it to the main hydraulic pump regulators as a control signal pressure. The power shift pressure is measured at pressure tap (7). Additional pump components shown in this photo are: - Right pump regulator (1) - Left pump swashplate minimum angle adjustment (6) - Left pump regulator (8)

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This is a view of the right pump regulator. The pump regulator is located above and behind the power shift solenoid and proportional reducing valve. This view shows: - Right pump negative flow control adjustment (1) - Right pump horsepower control adjustment (2) The left pump regulator has the same adjustment screws.

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The 330D contains one case drain filter (1) for the pump case drain and the swing and travel system case drains and the fan motor case drain. The case drain filter is located in the main pump compartment. The return hydraulic system oil filter (2) is also located in the pump compartment. The hydraulic oil level sight gauge (3) is located on the rear of the hydraulic tank and is visible in the pump compartment.

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32 The main control valve group is located in the center of the upper structure of the machine. The main control valve group receives pilot oil signals from the operator controls in the cab. Each pilot signal then causes the appropriate control valve to shift in the correct direction. When a control valve shifts, oil flows from the main hydraulic pumps to the appropriate hydraulic cylinder or hydraulic motor to perform work. The 330D main control valve is similar to the 330C valve. The valves are: - Right side NFC signal line (1) - Stick 2 (2) - Boom 1 (3) - Bucket (4) - Attachment (5) - Right travel (6) - Right side NFC relief valve drain line (7) - Right side NFC relief valve (8) - Boom rod end line relief valve (9) - Bucket head end line relief valve (10) - Straight travel solenoid valve wiring harness (11) - Straight travel valve (12)

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Additional valves in the main control valve are: - Left travel (13) - Swing (14) - Stick regeneration signal line (15) - Stick 1 (16) - Boom 2 (17) - Auxiliary valve for tool control (18) - Main relief valve (19) - Stick head end line relief valve (20) - Auxiliary valve line relief valve (21) - Left side NFC signal line (22) - Left side NFC relief valve (23)

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34 The 330D is available with the Heavy Lift option. Heavy Lift provides a means to have increased hydraulic pressure available to help complete heavy lifts, such as larger sewer pipe. Heavy Lift is activated by pressing the heavy lift switch (1) on the soft switch panel in the operators station. The heavy lift switch is an input to the Machine and Tool Control ECM. The Machine and Tool Control ECM limits engine speed to speed dial 6 and activates the heavy lift solenoid (2), which directs pilot oil to the main relief valve (3) increasing the system pressure. At the same time, the Machine and Tool Control ECM increases the power shift pressure to decrease the pump output flow. Decreasing the pump output flow provides increased controllability and smooth hydraulic control during a heavy lift operation. Heavy Lift mode limits the pumps to a maximum of approximately 60% of the normal hydraulic horsepower. Heavy Lift Specs: - Engine rpm for Heavy Lift is the engine speed dial 6 setting. - Hydraulic horsepower is limited to 60% of full power during Heavy Lift. - Main relief maximum pressure during Heavy Lift is 36000 kPa ± 490 kPa (5220 ± 71 psi).

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The 330D has one swing motor (1) that receives oil from the swing control valve. The swing control valve receives pump oil from the left pump. Additional swing motor components shown in this photo are: - Swing brake release pressure line (2) - Swing drive oil level dipstick (3) - Fine swing solenoid harness (4)

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MAINTENANCE ITEMS Cat ET or the monitoring system can be used for testing and calibrating the machine. Extended fluid change intervals are available with the proper S•O•S procedures. Maintenance intervals for several components and systems on the machine are programmed into the monitor. The operator can access component maintenance intervals to see the hours remaining before maintenance is due. Some of the maintenance items are: - Hydraulic oil and hydraulic oil filter changes - Swing drive oil change - Travel drive oil change - Engine oil and engine oil filter changes

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37 TOOL CONTROL SYSTEM The tool control system for the 330D is similar in function to the tool control systems for the 320C - 330C medium excavators, although the medium pressure circuit is now a stand-alone function. The optional tool control system maximizes work tool productivity by configuring hydraulic flow, pressure, and operator controls to match a specific work tool. System versatility enables a wide range of tools to be used. The 330Ds produced in Akashi and Aurora can be equipped with the following factory installed tool control systems: - System 3 (Hammer) - provides two pump flow in a single direction only. This system also includes a mechanical line relief valve (LRV) for lower psi tools (single action). - System 5/System 15 (Thumb) - provides one pump flow in both directions (extend/retract double action) and can be controlled with a foot pedal (system 5) or with joystick buttons (system 15). - System 14 (Multifunction) - provides one or two pump flow in one or two directions (single action or double action). System 14 has full electronic controls and features an independent medium pressure circuit used for such applications as a rotating shear or ditch cleaning bucket.

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The 330D's produced in Gosselies will have the following factory installed optional tool control systems: - System 16 - provides two pump flow in a single direction, has a direct return system to the hydraulic tank, and includes a mechanical (LRV) for lower psi tools (single action). - System 17 (Multifunction) - provides one or two pump flow in one or two directions (single action or double action) and has a direct return system to the hydraulic tank. System 17 has full electronic controls and features an independent medium pressure circuit used for applications such as a rotating shear or ditch cleaning bucket.

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38 The medium pressure solenoids (1) for the medium pressure circuit are located in the pump compartment. Tool control pressure test ports (2) are also located in the pump compartment.

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CONCLUSION This presentation has provided New Product Introduction (NPI) information for the Caterpillar 330D Hydraulic Excavator. The new components and their locations were identified and discussed. Refer to the latest service literature for more information and specifications.

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HYDRAULIC SCHEMATIC COLOR CODE Black - Mechanical Connection. Seal

Red - High Pressure Oil

Dark Gray - Cutaway Section

Red / White Stripes - 1st Pressure Reduction

Light Gray - Surface Color

Red Crosshatch - 2nd Reduction in Pressure

White - Atmosphere or Air (No Pressure)

Pink - 3rd Reduction in Pressure

Purple - Pneumatic Pressure

Red / Pink Stripes - Secondary Source Oil Pressure

Yellow - Moving or Activated Components

Orange - Pilot, Charge or Torque Converter Oil

Cat Yellow - (Restricted Usage) Identification of Components within a Moving Group

Orange / White Stripes - Reduced Pilot, Charge, or TC Oil Pressure

Brown - Lubricating Oil

Orange / Crosshatch - 2nd Reduction in Pilot, Charge, or TC Oil Pressure

Green - Tank, Sump, o r Return Oil

Blue - Trapped Oil

Green / White Stripes Scavenge / Suction Oil or Hydraulic Void

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HYDRAULIC SCHEMATIC COLOR CODES The colors on the hydraulic schematics and cross-sectional views shown throughout this presentation denote specific meanings. This illustration identifies the meaning of each color.

Blue - Trapped Oil

Green - Tank, Sump, o r Return Oil

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Green / White Stripes Scavenge / Suction Oil or Hydraulic Void

Orange / Crosshatch - 2nd Reduction in Pilot, Charge, or TC Oil Pressure

Orange / White Stripes - Reduced Pilot, Charge, or TC Oil Pressure

Cat Yellow - (Restricted Usage) Identification of Components within a Moving Group

Brown - Lubricating Oil

Orange - Pilot, Charge or Torque Converter Oil

Red / Pink Stripes - Secondary Source Oil Pressure

Pink - 3rd Reduction in Pressure

Yellow - Moving or Activated Components

Purple - Pneumatic Pressure

White - Atmosphere or Air (No Pressure)

Red Crosshatch - 2nd Reduction in Pressure

Red / White Stripes - 1st Pressure Reduction

Dark Gray - Cutaway Section

Light Gray - Surface Color

Red - High Pressure Oil

Black - Mechanical Connection. Seal

HYDRAULIC SCHEMATIC COLOR CODE

SERV7106-02 Vol. 2, No. 2, 2006 NPI Handout No. 1

SERV7106-02 Vol. 2, No. 2, 2006

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NPI Handout No. 2

Posttest Directions: Circle the correct letter indicating the best answer for each question. 1. Which of the following features on the 330D is the same as it was on the 330C? A. B. C. D. E.

Engine Operator's station Monitoring system Hydraulic pumps Travel system

2. Where are the tool control pressure test ports located? A. B. C. D.

On the Tool control plumbing above the swing motor. In the compartment beneath the cab. In the front of the pump compartment. In the rear of the pump compartment.

3. Which tool control system is not available on the Aurora and Akashi produced 330D's? A. B. C. D. E.

Medium pressure circuit System 3 System 5 System 14 System 16

4. The service tool diagnostic connector is relocated on the 330D to: A. B. C. D.

radiator compartment air cleaner/battery compartment in the cab behind the operator's seat in the cab in the right console

5. What information is shown in the lower display window on the monitor? A. B. C. D. E.

Work tool currently selected Engine rpm Engine speed dial number Service meter hours Hydraulic oil pressure

6. Which component is not located in the radiator compartment? A. B. C. D. E.

Hydraulic oil cooler Engine coolant recovery bottle Fuel pressure sensors Fuel filter Machine and Tool Control ECM

SERV7106-02 Vol. 2, No. 2, 2006

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NPI Handout No. 3

Posttest (continued) 7. Which function is not prioritized by the priority pressure reducing valves? A. B. C. D.

Boom up Stick in Boom down Stick out

8. The boom and swing priority pressure reducing valves are located: A. B. C. D. E.

Behind the swing bearing on the left side Beneath the operator platform below the foot pedals Beneath the operator platform below the seat In the rear of the pump compartment Behind the swing bearing on the right side

9. The Auxiliary valve for the tool control is located on the right end of the main control valve. A. True B. False 10. The main implement pumps on the 330D are rated at: A. B. C. D.

2 X 270 L/min (71.4 gpm) 2 X 275 L/min (72.7 gpm) 2 X 280 L/min (74.0 gpm) 2 X 285 L/min (75.3 gpm)

SERV7106-02 Vol. 2, No. 2, 2006

Posttest Answer Key 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

E C E D A E C A B C

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NPI Handout No. 4