Removal of the Slide Valve of the Fuel Pump Canister

TASK 28-21-52-000-006-A
Removal of the Slide Valve of the Fuel Pump Canister

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
558-1-05903	1	EXTRACTOR - FUEL PUMP

B. Referenced Information

REFERENCE	DESIGNATION
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-21-51-000-002-A	Removal of the Fuel Pumps
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 28-25-00-650-003-A	To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-25-00-650-003-A-01	To Drain Remaining Fuel from the Wing Tanks and the Center Tank
Slide Valve of the Fuel Pump Canister 84QM(85QM)

3. Job Set-up
Subtask 28-21-52-941-068-A ** ON A/C NOT FOR ALL

A. Safety Precautions

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

(1) You must obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001).
(2) Put the SAFETY BARRIER(S) in position.

Subtask 28-21-52-650-063-A ** ON A/C NOT FOR ALL

B. Fuel Configuration
(1) Defuel the applicable fuel tank (Ref. AMM TASK 28-25-00-650-001).
(2) Drain the remaining fuel from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).

Subtask 28-21-52-865-064-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 37QA (PUMPFUEL NO 1, CTR TK)
121VU	FUEL/CTR TK/PUMP1 SPLY	29QA	P23
FOR FIN: 38QA (PUMPFUEL NO 2, CTR TK)
121VU	FUEL/CTR TK/PUMP2 SPLY	30QA	P26

Subtask 28-21-52-010-058-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the the applicable fuel pump.
(2) Remove the applicable fuel pump 37QA (38QA) (Ref. AMM TASK 28-21-51-000-002).

4. Procedure
Subtask 28-21-52-020-059-A ** ON A/C NOT FOR ALL

A. Removal of the Slide Valve
(1) Remove the screws (6) and the baulk arm assembly (5) from the canister (1).
(2) Use the 558-1-05903 EXTRACTOR - FUEL PUMP to remove the slide valve (4) from the canister (1) as follows:
(a) Engage the jacking screws of the 558-1-05903 EXTRACTOR - FUEL PUMP with the jacking holes in the slide valve (4).
(b) Pull the slide valve (4) out of the canister (1).
(3) Remove and discard the sealing ring (2) from its groove in the canister (1).
(4) Remove and discard the two sealing rings (3) from their grooves in the slide valve (4).
(5) Remove the 558-1-05903 EXTRACTOR - FUEL PUMP from the slide valve (4).

[Rev.10 from 2021] 2026.04.02 06:17:29 UTC