- if the oil level in the APU oil reservoir is not sufficient, do the oil servicing (Ref. AMM TASK 49-90-00-600-004).
(2) Carefully examine the APU externally:
- make sure that you do not find leaks on the oil system components or oil lines:
(a) If you find external oil leaks:
- correct/replace as necessary.
(3) Do a check and make sure that the LUBE-PUMP OIL FILTER (8076KM) is serviceable (Ref. AMM TASK 49-91-00-210-002).
(4) Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-008).
NOTE : Operate the APU for 10 minutes minimum under full load. This
____ makes sure that the oil temperature increases sufficiently.
4. Fault Isolation
_______________
A. If the APU Last Leg Report gives the maintenance message:
CHECK OIL LEAKAGE / OIL PRESS SW (8091KM):
Fault Code Number: 044 or 045
NOTE : The APU SHUTDOWNS report gives the maintenance message:
____ LOW OIL PRESSURE - CHECK OIL LEAKAGE / OIL PRESS SW (8091KM) APU Auto Shut Down Fault Code Number: 044 or 045
- do a check and repair the wiring from ECB (59KD) to the OIL PRESSURE SWITCH (8091KM) (Ref. ASM 49-61/02).
(1) If the fault continues:
- replace the OIL PRESSURE SWITCH (8091KM) (Ref. AMM TASK 49-94-14-000-002) and (Ref. AMM TASK 49-94-14-400-002).
(a) If the fault continues:
- replace the DE-OILING SOLENOID VALVE (8083KM) (Ref. AMM TASK 49-91-49-000-002) and (Ref. AMM TASK 49-91-49-400-002).
1 If the fault continues:
_
- do a check and make sure that the LUBE-PUMP OIL FILTER (8076KM) is serviceable (Ref. AMM TASK 49-91-00-210-002).
「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 : 106-106, 108-149, 211-299, 301-399, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page 234
Config-2 Aug 01/05 CES b If the fault continues:
a_ If the fault continues:
- replace the OIL PRESSURE-RELIEF VALVE (Ref. AMM TASK 49-
91-43-000-002) and (Ref. AMM TASK 49-91-43-400-002).
_
- replace the APU GENERATOR (8XS) (Ref. AMM TASK 24-23-51-000-001) and (Ref. AMM TASK 24-23-51-400-001).
c If the fault continues:
_
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-002) and (Ref. AMM TASK 49-61-34-400-002).
d If the fault continues:
_
- replace the AUXILIARY POWER UNIT (4005KM) (Ref. AMM TASK 49-11-11-000-003) and (Ref. AMM TASK 49-11-11-400-003).
B. Do the test given in para. 3.
TASK 49-00-00-810-896
APU AUTO SHUT DOWN - HIGH OIL TEMPERATURE (APS 3200)
1. Possible Causes
_______________
- oil level in the APU oil reservoir is not sufficient
- air passages of the oil cooler are blocked
- leaks on the oil system components or oil lines
- OIL COOLER (8079KM)
- LUBE-PUMP OIL FILTER (8076KM)
- GENERATOR OIL FILTER (8069KM)
- GEN-APU (8XS)
- COOLING FAN ASSEMBLY (8055KM)
- ECB (59KD)
- AUXILIARY POWER UNIT (4005KM)
- wiring
- OIL TEMP SENSOR (8084KM)
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 31-32-00-860-001 Procedure to Get Access to the SYSTEM REPORT/TEST
Menu Page AMM 49-00-00-710-008 Operational Test of the APU (APS 3200) AMM 49-11-11-000-003 Removal of the Power Plant (APU) (APS 3200) AMM 49-11-11-400-003 Installation of the Power Plant (APU) (APS 3200) AMM 49-52-53-000-001 Removal of the PMG and Cooling Fan Assembly (8055KM)
(APS 3200) AMM 49-52-53-400-001 Installation of the PMG and Cooling Fan Assembly (8055KM) (APS 3200) AMM 49-61-34-000-002 Removal of the Electronic Control Box (ECB) (59KD) (APS 3200) AMM 49-61-34-400-002 Installation of the Electronic Control Box (ECB)
(59KD) (APS 3200) AMM 49-90-00-600-004 Check Oil Level and Replenish (APS 3200) AMM 49-91-00-210-002 Visual Inspection of the Lube Pump Filter (8076KM)
and Generator-Scavenge Filter (8069KM)
Differential-Pressure Indicator Position (APS 3200) AMM 49-91-44-000-003 Removal of the Oil Cooler (8079KM) (APS 3200) AMM 49-91-44-100-002 Cleaning of the Oil Cooler (APS 3200) AMM 49-91-44-400-003 Installation of the Oil Cooler (8079KM) (APS 3200) AMM 49-91-51-000-002 Removal of the Oil-Sump Temperature Sensor (8084KM)
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