- pressure switch connector 27QA-A, pin C and the SDAC-1 rack connector 1WV1-AA, terminal 2D
- pressure switch connector 27QA-A, pin C and the SDAC-2 rack connector 1WV2-AA, terminal 2D
- pressure switch connector 27QA-A, pin C and the BOARD-ANN LT TEST & INTFC connector 20LP-A, terminal 9
- BOARD-ANN LT TEST & INTFC connector 20LP-A, terminal 44 and the P/BSW-FUEL/L TK PUMPS/2 connector 15QA-A, terminal 7.
NOTE : A short circuit to ground on one of these lines can cause:
____
- a false LO PR warning to be generated within the FWC
- the FAULT legend/lamp to come on incorrectly. It is possible that a short circuit to ground on one of these lines can come from one of the LRUs as follows:
- BOARD-ANN LT TEST & INTFC (20LP)
- FLSCU-1 (7QJ)
- SDAC-1 (1WV1)/SDAC-2 (1WV2).
(e) Repair the unserviceable wiring and connectors.
(f) Do the test given in Para. 3.B.(2)(b).
「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, 051-099, 101-149, 151-199, ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page 277
201-299, 401-499, Aug 01/05 CES
**ON A/C ALL
5. Close-up
________
R **ON A/C 001-049, 051-099, 101-105, 151-154, 201-207,
A. Close Access
(1) Make sure that the fuel pump is installed correctly and the two bolts that attach the pump have been torque tightened (Ref. AMM TASK 28-21-51-400-001).
(2) Make sure that the fuel pump supply cable end connector 25QA-A is connected to the fuel pump electrical receptacle.
(3) Install the fuel pump cover assembly (Ref. AMM TASK 28-21-51-400-001).
(4) Install the fuel pump fairings (Ref. AMM TASK 28-21-49-400-001). Make sure that the fuel pump supply cable:
- is held correctly by the tape hooks (post SB 24-1070)
- does not get caught under the fairings (this is very important in the area adjacent to the fairing attachment bolts).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
**ON A/C ALL
R Post SB 28-1093 For A/C 001-049,051-099,101-105,151-154,201-207,
A. Close Access
(1) Make sure that the fuel pump is installed correctly and the two bolts that attach the pump have been torque tightened (Ref. AMM TASK 28-21-51-400-001).
(2) Make sure that the fuel pump supply cable end connector 25QA-A is connected to the fuel pump electrical receptacle.
(3) Install the fuel pump cover assembly (Ref. AMM TASK 28-21-51-400-001).
(4) Install the fuel pump fairings (Ref. AMM TASK 28-21-49-400-001). Make sure that the fuel pump supply cable does not get caught under the fairings.
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page 278
May 01/05 CES **ON A/C ALL
TASK 28-21-00-810-804
Fuel Pumps - Right Wing Tank Fuel Pump No. 2 (Outer) 26QA System Malfunction
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
WARNING : DO NOT CLOSE AN OPEN (TRIPPED) CIRCUIT BREAKER RELATED TO A
_______
FUEL-PUMP.
IF YOU CLOSE THE CIRCUIT BREAKER, THERE IS A RISK:
- OF FIRE OR OF AN EXPLOSION
- OF DAMAGE TO THE AIRCRAFT WIRING AND STRUCTURE.
R WARNING : WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST
_______ R EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL R SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT, E.G. EN50-020, R UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE R FIRE OR AN EXPLOSION.
1. Possible Causes
_______________
- PUMP-FUEL NO 2, R WING TK (26QA)
- CNTOR-R WING TK PUMP 2 SPLY (20QA)
- PRESS SW-FUEL PUMP NO 2, R WING TK (28QA)
- SEQUENCE VALVE of the fuel-pump (26QA)
- C/B-FUEL/R WING TK/PUMP 2 SPLY (8QA)
- aircraft wiring
- pressure switch sealing valve
- pressure switch plug (banjo adaptor attachment bolt)
- pressure switch fuel supply pipe-line between the fuel pump canister 4QM and the pressure switch 28QA
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 FUEL 燃油1(101)
