Pratt & Whitney Canada
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PRATT & WHITNEY CANADA
SERVICE BULLETIN P&WC S.B. No. 1668R1
BULLETIN INDEX LOCATOR
72-30-05 TURBOPROP ENGINE LOCK CUPWASHERS TO THE INLET CASE BOLTS - INTRODUCTION OF MODEL APPLICA APPLICATION TION PT6A-6, PT6A-6 PT6A-6, PT6A-6A, A, PT6APT6A-6B, 6B, PT6A-2 PT6A-20, 0, PT6A-2 PT6A-20A, 0A, PT6A-2 PT6A-20B, 0B, PT6A-2 PT6A-21, 1, PT6A-2 PT6A-25, 5, PT6A-2 PT6A-25A, 5A, PT6A-25C, PT6A-27, PT6A-28, PT6A-34, PT6A-34AG, PT6A-34B, PT6A-35, PT6A-36, PT6A-114, PT6A-114A, PT6A-135, PT6A-135A Compli Com plianc ance: e: CA CATEG TEGOR ORY Y 7 Summary: Summa ry: To ease the assembly assembly procedure procedure to attach the No.1 bearing bearing housing to the compressor compressor inlet case. This service bulletin replaces the lock-wire method with a cupwasher locking method. The introduction of a No.1 bearing outer housing ring is necessary.
Sep 17/2008 Revision No. 1: Jan 26/2009 24-Hour Global Service
CFIRST CENTRE Toll free where available (SIL GEN-027)
PT6A-72-1668 Cover Sheet USA & CANADA........................1-800-268-8000 International ....................(IAC*)+8000-268-8000 .................... (IAC*)+8000-268-8000
Other....................................... Other............................ .............. ...1-450-647-8000 1-450-647-8000 Fax .......... .................... ..................... ...................... .............. ...1-450-647-2888 1-450-647-2888
* International Access Code
Web Site ......................... .................................. .........www.pwc.ca
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WARNING - PROPRIETARY RIGHTS & EXPORT CONTROLS NOTICE This bulletin contains proprietary information of Pratt & Whitney Canada Corp. ( P&WC P&WC ), ), which P&WC provides in confidence and solely for the purposes of supporting engine certification and providing applicable information regarding the proper use, maintenance, inspection, repair, servicing and parts application of P&WC products and services, as directed therein. Neither this bulletin nor any information in it may be disclosed to others, or used for any other purpose, including, without limitation, to design, create, develop, reproduce, manufacture or derive any design, part, product, material, process, modification, configuration change or repair, or obtain FAA or other government approval to do so. Possession and use of this bulletin is also subject to the restrictions set out in P&WC’s Technical Technical Data Agreement (a copy of which may be obtained by contacting P&WC Technical Technical Publications). The contents of this bulletin may be subject to export control laws. Unauthorized export or re-export of the bulletin, or parts thereof, is prohibited. By accepting and possessing this bulletin, you agree to be bound by the foregoing terms. ″
″
If a Government agency or department intends to disclose any information, written notice should be given to: VP - Legal Services, Services, Pratt & Whitne Whitney y Canad Canada a Corp Corp., ., 1000 Marie-Victor Marie-Victorin in (01BE (01BE5), 5), Longueuil, Longueuil, Quebec J4G 1A1.
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Pratt & Whitney Canada Corp. 1000, Marie-Victorin Longueuil, Québec, Canada J4G 1A1 Tél. 450-677-9411
26 January 2009 P&WC S.B. No. 1668R1 REVISION TRANSMITTAL SHEET TURBOPROP ENGINE MODEL PT6A
SUBJECT SUBJE CT:: Pratt & Whitney Canada Service Service Bulletin No. PT6A-72-1668, PT6A-72-1668, Rev. Rev. No. 1, dated dated Jan 26/2009 (P&WC S.B. No. 1668R1) LOCK CUPWASHERS TO THE INLET CASE BOLTS - INTRODUCTION OF
Replace your existing copy of this service bulletin with the attached revised bulletin. Destroy the superseded copy. Please retain this Revision Transmittal Sheet with the revised bulletin. SUMMARY SUMM ARY::
This service service bulletin bulletin is revised to modify the part replacemen replacements ts for the PT6A-6/PT6A-2 PT6A-6/PT6A-20 0 series.
EFFECT OF REVISION ON PRIOR ACCOMPLISHMENT: None. NOTE: NOT E: A black black bar in the left margin margin indica indicates tes a change change in tha thatt line of text or figure. figure.
REVISION HISTORY HISTORY:: Original Origin al Iss Issue: ue: Sep 17/ 17/2008 2008 Revision Revis ion No. 1: Jan 26/2 26/2009 009
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PRATT & WHITNEY CANADA
SERVICE BULLETIN P&WC S.B. No. 1668R1 TURBOPROP ENGINE LOCK CUPWASHERS TO THE INLET CASE BOLTS - INTRODUCTION OF
1. Pla Planni nning ng Inf Inform ormati ation on A.
Effec Ef fectiv tivity ity PT6A-6 Engines. PT6A-6A Engines. PT6A-6B Engines. PT6A-20 Engines. PT6A-20A Engines. PT6A-20B Engines. PT6A-21 Engines which are before and include Serial No. PCE-PE0682. PT6A-25 Engines. PT6A-25A Engines which are before and include Serial No. PCE-RN003. PT6A-25C Engines which are before and include Serial No. PCE-PF0062. PT6A-27 Engines which are before and include Serial No. PCE-PG0376. PT6A-28 Engines. PT6A-34 Engines which are before and include Serial No. PCE-RB0384. PT6A-34AG Engines which are before and include Serial No. PCE-PH0430. PT6A-34B Engines. PT6A-35 Engines are before and include Serial No. PCE-RR0182. PT6A-36 Engines. PT6A-114 Engines. PT6A-114A Engines which are before and include Serial No. PCE-PC1517. PT6A-135 Engines. PT6A-135A Engines which are before and include Serial No. PCE-PZ0684 excluding PZ0680.
B.
Concur Con curren rentt Req Requir uireme ements nts None.
C. Re Reas ason on (1)) (1
Prob Pr oble lem m Attachment of the No.1 bearing housing to the compressor inlet case can be difficult and can take a long time to safety with lockwire.
(2)) (2
Caus Ca use e Because of the small accessability to the attaching bolts, the lockwire method used is not the optimum method.
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PRATT & WHITNEY CANADA
SERVICE BULLETIN P&WC S.B. No. 1668R1 TURBOPROP ENGINE LOCK CUPWASHERS TO THE INLET CASE BOLTS - INTRODUCTION OF
1. Planni Planning ng Inform Information ation (Cont (Cont’d) ’d) D. Des Descri cripti ption on Install the new No.1 bearing outer housing ring and attach the inlet case to the No.1 bearing housing with the new bolts and lock with new cupwashers. E.
Comp Co mplilian ance ce CATEGOR CA TEGORY Y 7 - You can do this service service bulletin bulletin when the supply of supersed superseded ed parts is fully used.
F.
Appr Ap prov oval al D.O.T./D.A.A. D.O.T ./D.A.A. approved.
G. We Weigh ightt and Bal Balanc ance e None. H. Ele Electr ctrica icall Loa Load d Dat Data a Not change changed. d. I.
Softwa Sof tware re Acc Accomp omplis lishme hment nt Sum Summar mary y Not applicable.
J.
Refe Re fere renc nces es Applicable PT6A Technical Manuals P&WC Consumable Materials List P/N 3043340
K.
Public Pub licati ations ons Af Affec fected ted Applicable PT6A Technical Manuals
L.
Interchange Inter changeabilit ability y and and Interm Intermixabil ixability ity of Parts Interchangeability - Refer to Para. 2.D. Intermixab Inter mixability ility - Not change changed. d.
2. Mat Materi erial al Inf
ati
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PRATT & WHITNEY CANADA
SERVICE BULLETIN P&WC S.B. No. 1668R1 TURBOPROP ENGINE LOCK CUPWASHERS TO THE INLET CASE BOLTS - INTRODUCTION OF
2. Mater Material ial Infor Information mation (Cont (Cont’d) ’d) B.
Materi Mat erial al - Cost Cost and and Avai Availab labili ility ty You can get the procurable parts listed in Para. 2.D. from any Pratt & Whitney Canada Parts Distribution Center. The estimated total cost of new parts needed to replace old parts is $414.10 (US, 2009). The new parts are scheduled to be available in .
C. Ma Manp npow ower er No more man-hours are necessary to include this service bulletin at overhaul. D. Mat Materi erial al Necess Necessary ary for for Each Each Engine Engine The quantity of materials listed in this section is on a per Engine basis.
New P/N
Keyword
Old P/N
Qty
Est. Unit List Price ($US, 2009)
Instructions Disposition
For the PT6A-6, PT6A-6A, PT6A-6B, PT6A-20, PT6A-20A and PT6A-20B Engines:
Washer MS9880-09
Washer, Cup Lock
MS9676-08
Bolt, Machine, Dbl Hex
3072 30 7259 5999-01 01
Rin ing, g, No 1 Be Bear arin ing g Ou Outter
3001564 MS9169-06
4
(A)(B)
4
5.87
4
18.73
1
315 70
(A) (A)(B) (A)
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PRATT & WHITNEY CANADA
SERVICE BULLETIN P&WC S.B. No. 1668R1 TURBOPROP ENGINE LOCK CUPWASHERS TO THE INLET CASE BOLTS - INTRODUCTION OF
E.
Reiden Rei dentifi tified ed Par Parts ts None.
F.
Tooling - Price Price and Avai Availabili lability ty
Tool No. PWC50925-1
Nomenclature Pliers Cupwasher
Est. Price ($US,)
Delivery
Quote
3. Accom Accomplish plishment ment Inst Instructi ructions ons A.
Remove the parts listed Remove listed under under Old P/N column column in Para. 2.D., 2.D., Material Material Inform Information. ation. Refer Refer to the applicable overhaul manual instructions.
B.
Install the parts listed Install listed under New P/N column column in Para. 2.D., 2.D., Material Material Information. Information. Refer Refer to the applicable overhaul manual instructions (Ref. 72-30-00 Install Compressor Inlet Case and Fairing) with the difference differences s that follow (Ref. Fig. 1): (1) Do the steps steps that follow follow after after you install install the compress compressor or inlet case case on the gas generator: (a) Lubricate Lubricate the threads of four bolts P/N MS9676-08 MS9676-08 with engine engine lubricating lubricating oil (PWC03-001). (b) Align and install install the inlet case case and the ring P/N 30725993072599-01 01 through the the threaded dowel. (c) Attach Attach the inlet case and the ring to the No. 1 bearing housing housing with three three bolts P/N MS9676-08 and three cupwashers P/N MS9880-09.
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PRATT & WHITNEY CANADA
SERVICE BULLETIN P&WC S.B. No. 1668R1 TURBOPROP ENGINE LOCK CUPWASHERS TO THE INLET CASE BOLTS - INTRODUCTION OF
BOLT P/N MS9676−08
CUPWASHER P/N MS9880−09
No. 1 BEARING OUTER HOUSING RING P/N 3072599−01
No.1 BEARING HOUSING (REF.)
COMPRESSOR INLET CASE (REF.)
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PRATT & WHITNEY CANADA
SERVICE BULLETIN P&WC S.B. No. 1668R1 TURBOPROP ENGINE LOCK CUPWASHERS TO THE INLET CASE BOLTS - INTRODUCTION OF
4. Ap Appe pend ndix ix Not applicable.
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