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 WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
 WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL MATERIALS
_______ ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
 1. Reason for the Job
__________________
 High EGT as a result of compressor contamination.
 NOTE : This procedure will not correct all APU problems. You must do the
____ correct trouble-shooting procedures before the compressor is cleaned. Complete these tasks after contamination of the engine with:
 -fuel,
 -corrosive materials.
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps No specific blanking plugs No specific circuit breaker(s) safety clip(s) No specific clean clear water No specific deionized water No specific container 1.0 l (0.2641 USgal) No specific access platform 3.5 m (11 ft. 6 in.) No specific Torque Wrench : range 0.00 to 1.20 m.daN
 (0.00 to 9.00 lbf.ft) 98A28007570000 1 ADAPTER - VENT AND DRAIN VALVE, APU  -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------

98A49007625001 1 DEVICE - CLEANING, APU
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 03-002 GB DEF-STAN 91-101
 LUBRICATING OIL TURBINE ENGINE SYNT BASE
 (Ref. 20-31-00) Material No. 04-012 USA VV-P-236
 PURE MINERALVASELINE OR PETRO- LATUM (Ref. 20-31-00) Material No. 11-010 USA TT-I-735 GRADE A
 ISOPROPYL ALCOHOL (Ref. 20-31-00) Material No. 11-013 USA MIL-PRF-85704
 COMPRESSOR CLEANING (Ref. 20-31-00) Material No. 11-014 GB MSRR9914
 GAS TURBINE COMPRESSOR CLEANER (Ref. 20-31-00) Material No. 19-010 USA AMS 5687
 LOCKWIRE STAINLESS STEEL ANNEALED 0.8MM DIA
 (Ref. 20-31-00)
 C. Expendable Parts
 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
20 O-Ring 49-21-04 53A-030 22 O-Ring 49-21-04 54A-030  D. Referenced Information

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
23-44-00-700-001  Operational Test of the Service Interphone
 24-41-00-861-002  Energize the Aircraft Electrical Circuits from the
 External Power
 29-14-00-614-001  Depressurization of the Hydraulic Reservoirs
 29-14-00-614-002  Pressurization of the Hydraulic Reservoirs through
 the Ground Connector
 49-00-00-710-008  Operational Test of the APU (APS 3200)
 52-41-00-010-001  Open the APU Doors for Access
 52-41-00-410-001  Close the APU Doors after Access
 AIPC 49210453010
 AIPC 49210453120
 AIPC 49210454170
 49-20-00-991-009  Fig. 701
 49-20-00-991-010  Fig. 702
 49-20-00-991-011  Fig. 703
 3. Job Set-up__________
 Subtask 49-20-00-860-062

 A. Aircraft Maintenance Configuration.
 (1)
 Make sure that the hydraulic systems are depressurized (Ref. TASK 29-14-00-614-001).

 (2)
 Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).

 (3)
 Make sure that the electronic racks are correctly ventilated.

 (4)
 Connect the service interphone to the aircraft (Ref. TASK 23-44-00-700-001).

 

 Subtask 49-20-00-865-085
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU APU/FUEL/BLOW OFF/PUMP 2QC B14 121VU APU/FUEL/BLOW OFF/CTL 1QC K39 121VU APU/FUEL/LP VALVE/CTL 1QF M40 121VU APU/FUEL/LP VALVE/SPLY 2QF M39 121VU APU/FUEL/PUMP/CTL 3QC M38
　
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