- replace the AUXILIARY POWER UNIT (4005KM) (Ref. AMM TASK 49-11-11-000-001) and (Ref. AMM TASK 49-11-11-000-001).
(2) If the oil level is above the ADD mark:
- replace the OIL LEVEL SWITCH (8087KM) (Ref. AMM TASK 49-93-16-000-001) and (Ref. AMM TASK 49-93-16-400-001).
(a) If the fault continues:
- do a check and repair the wiring from the ECB (59KD) AB/H2, H3, H4 to the OIL LEVEL SWITCH (8087KM) P8/3, 2, 1 (Ref. ASM 49-61/02).
(b) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001)
「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 : 063-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page 299
Config-1 Aug 01/05 CES
R **ON A/C 001-003, 051-099, 401-499,
B. Do the test given in para. 3.
TASK 49-00-00-810-833
APU AUTO SHUT DOWN - Shutdown in conjunction with Fuel Low Pressure (GTCP
36-300)
1. Possible Causes
_______________
- VALVE-AIR RELEASE, L WING TK (86QM)
- air in fuel
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
28-22-00-810-801 APU Fuel System - Low Pressure AMM 28-21-00-710-008 Operational Check of Air Release Valves to Ensure Adequate Fuel Flow Under Suction Feed Conditions AMM 28-21-41-000-001 Removal of the Low Pressure (LP) Air-Release-Valve 86QM(87QM) AMM 28-21-41-400-001 Installation of the Low Pressure (LP) Air-Release-Valve 86QM(87QM) AMM 28-22-00-710-001 Operational Test of the APU Fuel-Pump System on
Ground to Purge the Fuel Line AMM 28-22-00-710-002 Operational Test of the APU Fuel-Pump System AMM 49-00-00-710-004 Operational Test of the APU (4005KM) (GTCP 36-300) AMM 49-31-00-710-001 Operational Test of the APU Fuel Low Pressure Circuit
(GTCP 36-300)
3. Fault Confirmation
__________________
A. Test
(1) Purge the APU fuel feed-line to make sure that there is no air in fuel (Ref. AMM TASK 28-22-00-710-001).
(2) Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-004). Make sure that no MAIN fuel pumps are operating.
4. Fault Isolation
_______________
**ON A/C 001-003, 051-062,
A. If an APU auto shutdown occurs during the APU start sequence and the APU SHUTDOWNS report gives the maintenance message:
NO ACCELERATION - LOW FUEL PRESSURE CHECK APU FUEL SUPPLY:
「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 A201
Config-1 Aug 01/05 CES or
NO FLAME - LOW FUEL PRESSURE CHECK APU FUEL SUPPLY:
- do the operational test of the APU fuel pump system (Ref. AMM TASK 28-22-00-710-002). If the test is not correct, do the trouble shooting of the APU fuel system - low pressure (Ref. TASK 28-22-00-810-801),
- do the operational test of the LH air release valves (Ref. AMM TASK 28-21-00-710-008). If the test is not correct, replace the VALVE-AIR RELEASE, L WING TK (86QM) (Ref. AMM TASK 28-21-41-000-001) and (Ref. AMM TASK 28-21-41-400-001).
- do the operational test of the APU fuel low pressure warning (Ref. AMM TASK 49-31-00-710-001),
(1) If the operational test of the APU fuel low pressure warning gives a FUEL LO PR advisory abnormally:
- do the trouble shooting of the APU fuel low pressure (Ref. TASK 28-22-00-810-801).
(2) If the test gives a different maintenance message, you can find the related trouble shooting procedure in the applicable Page Block 101.
R **ON A/C 063-099, 401-499,
A. If an APU auto shutdown occurs during the APU start sequence and the APU SHUTDOWNS report gives the maintenance message:
NO ACCELERATION - LOW FUEL PRESSURE CHECK APU FUEL SUPPLY:
or
NO FLAME - LOW FUEL PRESSURE CHECK APU FUEL SUPPLY:
or
UNDERSPEED - LOW FUEL PRESSURE CHECK APU FUEL SUPPLY:
with the LRU TROUBLE SHOOT DATA menu information
FUEL PRESSURE SHOWS LOW DURING APU RUN
Fault Code Number: 100
- do the operational test of the APU fuel pump system (Ref. AMM TASK 28-22-00-710-002). If the test is not correct, do the trouble shooting of the APU fuel system - low pressure (Ref. TASK 28-22-00-810-801), 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 1(35)
