「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 A282
May 01/04 CES -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 28-21-49-400-001 Installation of the Fuel Pump Fairings AMM 28-21-51-000-001 Removal of the Fuel Pumps 21QA(26QA) and 25QA(22QA) AMM 28-21-51-400-001 Installation of the Fuel Pumps 21QA(26QA) and
25QA(22QA)
AMM 51-76-12-300-001 Local Repair of the Fuel Tank Sealant
AMM 51-76-12-300-002 Repair of the Fuel Tank Fillet
SIL 57-0086
ASM 28-21/01
3. Fault Confirmation
__________________
A. Table of the circuit breakers used in this procedure:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU FUEL/L WING TK/PUMP1 SPLY 1QA N23 121VU FUEL/R WING TK/PUMP1 SPLY 2QA Q23
B. Test
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.
(1) Not applicable.
4. Fault Isolation
_______________
R **ON A/C 001-049, 051-099, 101-105, 151-154, 201-207,
A. Procedure
NOTE : This procedure is written for the C/B-FUEL/L WING TK/PUMP 1 SPLY
____ 1QA with the C/B-FUEL/R WING TK/PUMP 1 SPLY 2QA given in parenthesis, if different.
(1) Do all the steps (2) thru (20) before you close the C/B-FUEL/L(R) WING TK/PUMP 1 SPLY 1QA(2QA) in step (21).
(2) Make sure that the L(R) TK PUMPS 1 P/BSW 13QA(14QA) shows OFF (released out).
「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 A283
May 01/05 CES
(3) Before you do more steps, make sure that the wing area adjacent to the left outer fuel pump 21QA (right inner fuel pump 22QA) fairings and cover are not contaminated with fuel from a fuel leak or spillage.
(a) If necessary:
1 Repair all the leaks:
_
- (Ref. AMM TASK 51-76-12-300-001)
- (Ref. AMM TASK 51-76-12-300-002)
- (Ref. SIL 57-0086).
2 Clean the area of the fuel spillage.
_
(4) Remove all the fuel pump 21QA(22QA) fairings (Ref. AMM TASK 28-21-49-000-001) and cover assembly (Ref. AMM TASK 28-21-51-000-001).
(5) Disconnect the supply cable end connector 21QA-A(22QA-A) from the fuel pump receptacle.
(6) Clean and dry:
- all the fuel pump fairings
- the fuel pump cover assembly
- the fuel pump supply cable and the related end connector
- the aircraft wing structure adjacent to the route of the supply cable across the wing surface
- the aircraft wing structure at the rear spar, adjacent to the landing light, where the fuel pump supply cable leaves the conduit and passes through the cable guide (bottom skin).
(7) Make sure that good lighting is available. Do a visual inspection and look for distortion (pinched or stretched), damage (chafed or cut), discoloration, overheating (burnt/melted or arcing) liquid contamination or incorrect assembly, of the items that follow:
- the electrical receptacle
- the supply cable end connector 21QA-A(22QA-A)
- the supply cable
- the cable guide
- the fuel pump fairings
- the tape hooks (Velcro) on the intermediate and rear fuel pump fairings (post SB 24-1070)
- the aircraft wing structure adjacent to the route of the supply cable (across the wing surface and at the rear spar)
- junction box (bracket assembly) on the rear spar.
NOTE : Incorrect installation of the fuel pump fairings can damage
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