- use a socket and a ratchet on the shaft of the STARTER MOTOR (8KA) to turn the APU counterclockwise (in the direction of the arrow on the housing).
- make sure that the APU rotates freely.
a If the APU does not rotate freely:
_
- replace the APU (4005KM) (Ref. AMM TASK 49-11-11-000-004) and (Ref. AMM TASK 49-11-11-400-004).
b If the APU rotates freely:
_
- replace the FUEL CONTROL UNIT (P19) (Ref. AMM TASK 49-32-11-000-003) and (Ref. AMM TASK 49-32-11-400-003).
c If the fault continues:
_
- replace the APU INLET PRESSURE TRANSDUCER (P22) (Ref. AMM TASK 49-51-21-000-001) and (Ref. AMM TASK 49-51-21-400-001).
d If the fault continues:
_
- replace the SPEED SENSORS (P26) (Ref. AMM TASK 49-71-13-000-003) and (Ref. AMM TASK 49-71-13-400-003).
e If the fault continues:
_
- replace the APU INLET TEMPERATURE SENSOR (P6) (Ref. AMM TASK 49-23-14-000-001) and (Ref. AMM TASK 49-23-14-400-001).
「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 : 001-049, 101-105, 107-107, 151-154, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page 212
201-207, Config-1 Aug 01/05 CES g If the fault continues:
f_ If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-003)
and (Ref. AMM TASK 49-61-34-400-003).
_
- replace the APU (4005KM) (Ref. AMM TASK 49-11-11-000-004) and (Ref. AMM TASK 49-11-11-400-004).
**ON A/C 001-049, 101-105, 151-199, 201-210,
Post SB 49-1062 For A/C 001-049,101-105,151-154,201-207,
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
UNDERSPEED FCU (8022KM) / APU FUEL SUPPLY / APU ROTATION
associated with Fault Code Number (FCN) 204
- do a check for a blockage of the APU inlet
(1) If the fault continues:
- do a check for damage/leakage of the APU FUEL SYSTEM.
(a) If there is damage/leakage in the APU FUEL SYSTEM:
- do a repair.
(b) If the APU FUEL SYSTEM is OK:
- purge the aircraft fuel-line of the APU-pump fuel-system. (Ref. AMM TASK 28-22-00-710-001).
1 If the fault continues:
_
- replace the APU FUEL FILTER (Ref. AMM TASK 49-32-41-920-001).
2 If the fault continues:
_
- do a check for APU internal dammage:
- do check for contamination of the MAGNETIC-DRAIN PLUG (Ref. AMM TASK 49-91-42-200-004).
NOTE : If the MAGNETIC-DRAIN PLUG is not contaminated,
____ continue without starting the APU
- .
- remove the end cap from the STARTER MOTOR (8KA).
- use a socket and a ratchet on the shaft of the STARTER MOTOR (8KA) to turn the APU counterclockwise (in the direction of the arrow on the housing).
- make sure that the APU rotates freely.
「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 : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page 213
201-210, Config-1 Aug 01/05 CES
a If the APU does not rotate freely:
_
- replace the APU (4005KM) (Ref. AMM TASK 49-11-11-000-004) and (Ref. AMM TASK 49-11-11-400-004).
b If the APU rotates freely:
_
- replace the FUEL CONTROL UNIT (8022KM) (Ref. AMM TASK 49-32-11-000-003) and (Ref. AMM TASK 49-32-11-400-003).
c If the fault continues:
_
- replace the APU INLET PRESSURE TRANSDUCER (8048KM) (Ref. AMM TASK 49-51-21-000-001) and (Ref. AMM TASK 49-51-21-400-001).
d If the fault continues:
_
- replace the SPEED SENSORS (8060KM) (Ref. AMM TASK 49-71-13-000-003) and (Ref. AMM TASK 49-71-13-400-003).
e If the fault continues:
_
- replace the APU INLET TEMPERATURE SENSOR (8010KM) (Ref. AMM TASK 49-23-14-000-001) and (Ref. AMM TASK 49-23-14-400-001).
f If the fault continues:
_
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-003) and (Ref. AMM TASK 49-61-34-400-003).
g If the fault continues:
_
- replace the APU (4005KM) (Ref. AMM TASK 49-11-11-000-004) and (Ref. AMM TASK 49-11-11-400-004).
R **ON A/C 001-049, 101-105, 107-107, 151-199, 201-210,
B. Do the test given in para. 3.
「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 : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page 214
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