Removal of the Check Valve of the Fuel Pump Canister

TASK 28-21-52-000-004-A
Removal of the Check 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	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CONTAINER 10 L(2 1/2 USGAL)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB, 196BB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-21-51-000-001-A	Removal of the Fuel Pumps
TASK 28-21-51-000-002-A	Removal of the Fuel Pumps
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 28-25-00-869-001-A	Fuel Transfer
TASK 31-60-00-860-001-A	EIS Start Procedure
Check Valve of the Fuel Pump Canister - Location and Detail ** ON A/C NOT FOR ALL
Check Valve of the Fuel Pump Canister - Location and Detail ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-21-52-941-064-A

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) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(3) Put WARNING NOTICE(S) in position to tell persons not to operate the fuel system.

Subtask 28-21-52-860-056-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Defuel the fuel from the applicable wing tank (Ref. AMM TASK 28-25-00-650-001) or transfer the fuel from the applicable wing tank (Ref. AMM TASK 28-25-00-869-001).
(3) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(4) In the cockpit, on the ECAM control panel, push (in) the FUEL system-page button.

CAUTION: BEFORE YOU CLOSE THE CROSSFEED VALVE, MAKE SURE THAT THE FUEL PUMP(S) IS(ARE) OFF. THIS WILL PREVENT DAMAGE TO THE CROSSFEED VALVE.

(5) In the cockpit, on fuel panel 40VU, release (out) the X FEED pushbutton switch (the ON and OPEN lights go off).
(6) In the cockpit, on the ECAM lower Display Unit (DU), make sure that the X FEED valve indication shows the green cross-line (closed).
(7) In the cockpit, on the ECAM control panel, turn the LOWER DISPLAY switch counter-clockwise to the off position:
(a) Make sure that the ECAM lower DU goes off.
(8) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 28-21-52-860-056-B ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Defuel the applicable wing tank (Ref. AMM TASK 28-25-00-650-001) or transfer the fuel from the applicable wing tank to remove the wing-tank fuel-pump-canister check-valves (Ref. AMM TASK 28-25-00-869-001).
(3) Defuel the left wing tank (Ref. AMM TASK 28-25-00-650-001) or transfer the fuel from the left wing tank to remove the check valve of center-tank fuel-pump-canister 84QM (Ref. AMM TASK 28-25-00-869-001).
(4) Defuel the right wing tank (Ref. AMM TASK 28-25-00-650-001) or transfer the fuel from the right wing tank to remove the check valve of center-tank fuel-pump-canister 85QM (Ref. AMM TASK 28-25-00-869-001).
(5) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(6) In the cockpit, on the ECAM control panel, push (in) the FUEL system-page button.

CAUTION: BEFORE YOU CLOSE THE CROSSFEED VALVE, MAKE SURE THAT THE FUEL PUMP(S) IS(ARE) OFF. THIS WILL PREVENT DAMAGE TO THE CROSSFEED VALVE.

(7) In the cockpit, on fuel panel 40VU, release (out) the X FEED pushbutton switch (the ON and OPEN lights go off).
(8) In the cockpit, on the ECAM lower Display Unit (DU), make sure that the X FEED valve indication shows the green cross-line (closed).
(9) In the cockpit, on the ECAM control panel, turn the LOWER DISPLAY switch counterclockwise to the off position:
(a) Make sure that the ECAM lower DU goes off.
(10) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 28-21-52-865-058-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	FUEL/CTR TK/PUMP2 SPLY	30QA	P26
121VU	FUEL/CTR TK/PUMP1 SPLY	29QA	P23
** ON A/C ALL
121VU	FUEL/L WING TK/PUMP2 SPLY	7QA	N26
121VU	FUEL/L WING TK/PUMP1 SPLY	1QA	N23
121VU	FUEL/R WING TK/PUMP2 SPLY	8QA	Q26
121VU	FUEL/R WING TK/PUMP1 SPLY	2QA	Q23
123VU	L WING TK/PUMP 1/STBY SPLY	11QA	AD12
123VU	R WING TK/PUMP 1/STBY SPLY	12QA	AE12

Subtask 28-21-52-010-056-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the applicable fuel pump.
(2) Remove the applicable fuel pump (Ref. AMM TASK 28-21-51-000-001).

Subtask 28-21-52-010-056-B ** ON A/C NOT FOR ALL

D. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the applicable fuel pump.
(2) For the check valve of the wing-tank fuel pump canisters:
(a) Remove the applicable fuel pump (Ref. AMM TASK 28-21-51-000-001).
(3) For the check valve of the center-tank fuel pump canisters 84QM(85QM):
(a) Open the applicable access panel 195BB 196BB.
(b) Remove the applicable fuel pump (Ref. AMM TASK 28-21-51-000-002).

4. Procedure
Subtask 28-21-52-020-057-A

A. Removal of the Check Valve of the Fuel Pump Canister
(1) Put a CONTAINER 10 L(2 1/2 USGAL) below the applicable fuel pump canister.
(2) Remove the four screws (2) and if applicable, the four washers (3).

NOTE: The washers (3) are installed on canisters with part number series 568-1-27203-xxx and 568-1-27244-xxx.
The washers (3) are not installed on canisters with part number series C93R38-6xx.

(3) Remove the check valve (4) from the canister (1).
(4) Remove and discard the O-ring (5).

[Rev.10 from 2021] 2026.04.02 06:17:28 UTC