(2) If there is no difference between the both pressure values:
- do a check of the Fuel-Filter Differential-Pressure Indicator on the Fuel Control Unit.
(a) If the Fuel-Filter Differential-Pressure Indicator is extended:
- do the servicing of the plugged Fuel Filter (Ref. AMM TASK 49-32-11-610-001).
(b) If Fuel-Filter Differential-Pressure Indicator is not extended:
1_ If the fault continues:
- replace the FUEL CONTROL UNIT P19 (Ref. AMM TASK 49-32-11-
000-001) and (Ref. AMM TASK 49-32-11-400-001).
- replace the FUEL CONTROL UNIT P19 (Ref. AMM TASK 49-32-11-000-001) and (Ref. AMM TASK 49-32-11-400-001).
B. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-004).
R **ON A/C 001-003, 051-099, 401-499,
TASK 49-00-00-810-850
APU AUTO SHUT DOWN - CLOGGED OIL FILTER, on ground (GTCP 36-300)
1. Possible Causes
_______________
- GEN-APU (8XS)
- OIL FILTER DIFFERENTIAL PRESSURE SWITCH P9 for the lube pump filter
- OIL FILTER DIFFERENTIAL PRESSURE SWITCH P5 for the gen scavenge pump filter
- wiring
- ECB (59KD)
- AUXILIARY POWER UNIT (4005KM)
- OIL FILTER DIFFERENTIAL PRESSURE SWITCH (8070KM) for the lube pump filter
- OIL FILTER DIFFERENTIAL PRESSURE SWITCH (8071KM) for the gen scav pump filter
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 24-23-51-000-001 Removal of the APU Generator 8XS
AMM 24-23-51-400-001 Installation of the APU Generator 8XS
AMM 49-00-00-710-004 Operational Test of the APU (4005KM) (GTCP 36-300)
AMM 49-00-00-860-003 APU Start by External Power (GTCP 36-300)
AMM 49-00-00-860-004 APU Shutdown by External Power (GTCP 36-300)
AMM 49-11-00-000-002 Removal of the Generator Substitution Kit (GTCP
36-300) AMM 49-11-00-400-002 Installation of the Generator Substitution Kit (Flight without Generator) (GTCP 36-300) AMM 49-11-11-000-001 Removal of the Auxiliary Power Unit (APU) - 4005KM (GTCP 36-300) AMM 49-11-11-400-001 Installation of the Auxiliary Power Unit (APU) -4005KM (GTCP 36-300) AMM 49-61-34-000-001 Removal of the Electronic Control Box (ECB) (59KD) (GTCP 36-300) AMM 49-61-34-400-001 Installation of the Electronic Control Box (ECB)
(59KD) (GTCP 36-300)
AMM 49-90-00-600-002 Oil Change (Drain Method) (GTCP 36-300)
AMM 49-91-14-000-001 Removal of the Generator Scavange Differential
Pressure Switch (GTCP36-300) AMM 49-91-14-400-001 Installation of the Generator Scavange Differential Pressure Switch (GTCP 36-300) AMM 49-91-15-000-001 Removal of the Oil Pump Differential Pressure -Switch (GTCP36-300)
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-003, 051-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A280
Config-1 Aug 01/05 CES
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 49-91-15-400-001 Installation of the Oil Pump Differential Pressure -Switch (GTCP36-300) AMM 49-91-41-200-001 Remove and discard Alternator Scavenge Filter Element
(8069KM) (GTCP 36-300) AMM 49-91-42-200-001 Check APU Magnetic Chip Detector (MCD) (GTCP 36-300) AMM 49-91-45-200-002 Remove and discard Lube Filter Element (GTCP 36-300) ASM 49-61/02
3. Fault Confirmation
__________________
A. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-004).
4. Fault Isolation
_______________
**ON A/C 001-003, 051-062,
A. If the test gives the maintenance message:
LUBE PMP FILTER P9 AND GEN SCAV FILTER P5
NOTE : The APU SHUTDOWNS report gives the message CLOGGED OIL FILTER -
____
CHECK LUBE PMP FILTER P9 AND GEN SCAV FILTER P5
- do a visual check of the differential pressure indicators of the APU generator scavenge filter and the APU lubrication filter.
(1) If the differential pressure indicators do not confirm that the APU generator scavange filter and/or the APU lubrication filter is/are clogged:
- replace the OIL FILTER DIFFERENTIAL PRESSURE SWITCH P9 for the lube pump filter (Ref. AMM TASK 49-91-15-000-001) and (Ref. AMM TASK 49-91-15-400-001).
- replace the OIL FILTER DIFFERENTIAL PRESSURE SWITCH P5 for the gen scavenge pump filter (Ref. AMM TASK 49-91-14-000-001) and (Ref. AMM TASK 49-91-14-400-001)
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