- 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).
「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 233
201-210, Config-1 Aug 01/05 CES - make sure that the APU rotates freely.
(1) 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)
(a) 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).
NOTE : The APU can have a normal start on the ground and fail a
____ start in the air if the proper ambient corrections are not made (calibration shift).
(b) 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).
NOTE : The APU can have a normal start on the ground and fail a
____ start in the air if the proper ambient corrections are not made (calibration shift).
(c) 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).
(2) 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).
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 234
201-210, Config-1 Aug 01/05 CES
TASK 49-00-81-810-813
APU AUTO SHUTDOWN - OVERTEMPERATURE (APU Start), Fuel Flow disagrees with
Command (131-9(A))
1. Possible Causes
_______________
- FUEL FLOW DISAGREES WITH COMMAND
- damage/contamination of electrical connector P19
- FUEL CONTROL UNIT (P19)
- aircraft wiring
- ECB (59KD)
- FUEL CONTROL UNIT (8022KM)
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific multimeter
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 49-00-00-860-008 APU Start by External Power (131-9(A)) AMM 49-32-11-000-003 Removal of the Fuel Control Unit (FCU) (8022KM) (131-9(A)) AMM 49-32-11-400-003 Installation of the Fuel Control Unit (FCU) (8022KM) (131-9(A)) AMM 49-61-34-000-003 Removal of the Electronic Control Box (ECB) (131-9(A)) AMM 49-61-34-400-003 Installation of the Electronic Control Box (ECB) (131-9(A)) ASM 49-61/02
3. Fault Confirmation
__________________
A. Read-out of ECB Trouble-Shooting Data
(1) Put the APU MASTER SW to the ON position.
(2) Get access to the APU SHUTDOWN report.
(3) Push the '>' adjacent to LRU DATA:
- the MCDU menu shows
FUEL FLOW DISAGREES WITH COMMAND
(4) Start the APU and apply Bleed Air for 20 seconds, minimum (Ref. AMM TASK 49-00-00-860-008).
4. Fault Isolation
_______________ R **ON A/C 001-049, 101-105, 107-107, 151-154, 201-207,
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
OVERTEMPERATURE
FUEL CONTROL UNIT P19/APU FUEL SUPPLY
associated with Fault Code Number (FCN) 79
- do a check for damage/contamination of electrical connector P19 of the FUEL CONTROL UNIT (P19).
(1) If the electrical connector P19 is damaged/contaminated:
- do a repair/cleaning.
(2) If the electrical connector is OK:
- use a multimeter to do a resistance check across pin 6 and pin 7 of the FUEL CONTROL UNIT (P19).
(a) If the resistance value is > 100 Ohms:
- replace the FUEL CONTROL UNIT (P19) (Ref. AMM TASK 49-32-11-000-003) and (Ref. AMM TASK 49-32-11-400-003). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 机载辅助动力 2(47)
