- 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 clogged Fuel Filter (Ref. AMM TASK 49-32-11-610-001).
 1 If the fault continues:
_

 - replace the FUEL CONTROL UNIT (8022KM) (Ref. AMM TASK 49-32-11-000-001) and (Ref. AMM TASK 49-32-11-400-001).
 (b) If Fuel-Filter Differential-Pressure Indicator is not extended:

 - replace the FUEL CONTROL UNIT (8022KM) (Ref. AMM TASK 49-32-11-000-001) and (Ref. AMM TASK 49-32-11-400-001).

 (c) If the fault continues:

 NOTE : THE TORQUE LIMIT IS 29 lbf.ft (3.9318 m.daN). DO NOT TURN
____ THE SHAFT WITH A TORQUE MORE THAN THE LIMIT. A TORQUE MORE THAN THE LIMIT WILL DAMAGE THE COMPONENT.
 - turn the manual drive shaft of the starter motor (8KA) in a counterclockwise direction (in the direction of the arrow on the housing) and make sure that: . you can turn the manual drive shaft of the starter motor equally, . the APU rotors, bearings and gears do not rub, . the APU rotors, bearings and gears do not make unsual noise.
 NOTE : Turn the manual drive shaft of the starter motor with a
____ torque wrench. Make sure that the drag is 15 to 45 lbf.in (0.17 to 0.51 m.daN).
 「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 : 063-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page B204
 Config-1 Aug 01/05 CES

 1_ If you find that the drag of the APU rotors, bearings and
 gears is too much, they do rub or they make unsual noise,
 replace the AUXILIARY POWER UNIT (4005KM) (Ref. AMM TASK 49-

11-11-000-001) and (Ref. AMM TASK 49-11-11-400-001).
 B. Do the test given in para. 3.

 TASK 49-00-00-810-861

 APU AUTO SHUTDOWN - UNDERSPEED, Inlet Guide Vanes Fault (GTCP 36-300)
 1. Possible Causes
_______________
 - ECB (59KD)

 - AUXILIARY POWER UNIT (4005KM)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 49-00-00-710-004 Operational Test of the APU (4005KM) (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 49-23-51-000-002 Removal of the Inlet Guide Vane-Actuator (8014KM) (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)
 3. Fault Confirmation
__________________
 A. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-004).
 4. Fault Isolation
_______________
 A. If an APU shutdown occurs during the APU operational test and the APU SHUTDOWNS report gives the maintenance message:
 UNDERSPEED - CHECK IGV ASSEMBLY / IGV ACTUATOR (8014KM)
 with the LRU TROUBLE SHOOT DATA menu information:
 IGV POSITION DISAGREES WITH COMMAND
 Fault Code Number: 084

 - remove the IGV ACTUATOR (Ref. AMM TASK 49-23-51-000-002).
 (1) If the fault continues:
 - do a push/pull test on the IGVs to check the IGV movement. . make sure that the IGV has a travel range of 1 in. (25.4 mm), . measure the force of the IGV movement.
 「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 : 063-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page B206
 Config-1 Aug 01/05 CES

 (a) If a force less than 30 lbf (13.34 m.daN) is necessary to move the IGVs and the travel range is OK:

 - replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).

 (b) If a force more than 30 lbf (13.4 m.daN) is necessary to move the IGVs or the travel range is NOT OK:

 - replace the AUXILIARY POWER UNIT (4005KM) (Ref. AMM TASK 49-11-11-000-001) and (Ref. AMM TASK 49-11-11-400-001).
 B. Do the test given in para. 3.

 TASK 49-00-00-810-862
 Pressure Transducer Fault (GTCP 36-300)
 1. Possible Causes
_______________
 - COMPRESSOR INLET PRESSURE TRANSDUCER (8048KM)

 - TOTAL PRESSURE TRANSDUCER (8044KM)

 - ECB (59KD)
　
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