Installation of the Fuel Pump Strainers

TASK 28-21-54-400-002-A
Installation of the Fuel Pump Strainers

WARNING: MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

FIN: 192QM ** ON A/C NOT FOR ALL
FIN: 193QM ** ON A/C NOT FOR ALL
FIN: 5QM ** ON A/C NOT FOR ALL
FIN: 6QM ** ON A/C NOT FOR ALL
FIN: 7QM ** ON A/C NOT FOR ALL
FIN: 8QM ** ON A/C NOT FOR ALL

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	SAFETY BARRIER(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06HAA1)	Coating Sealant-Fuel Tank Brushable -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
540AB, 540AZ, 540BZ, 640AB, 640AZ, 640BZ

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-11-28-650-003-A	Pressure Refuel with Automatic Control
TASK 28-10-00-910-001-A	Safety Procedures When You Do Work in a Fuel Tank
TASK 28-10-00-910-002-A	Access to the Fuel Tanks and the Work Areas
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
TASK 28-25-00-869-001-A	Fuel Transfer
TASK 57-27-11-000-001-A	Removal of the Access Panel
TASK 57-27-11-400-001-A	Installation of the Access Panel
Fuel Pump Strainers ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-21-54-941-056-A ** ON A/C NOT FOR ALL

A. Safety Precautions

WARNING: BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.

(1) You must obey the fuel safety procedures (Ref. AMM TASK 28-10-00-910-001) when you do work in a fuel tank.
(2) Make sure that the SAFETY BARRIER(S) is in position.

Subtask 28-21-54-865-054-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR 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 28-21-54-860-054-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Make sure that the center tank and the applicable wing fuel tank are defuelled (Ref. AMM TASK 28-25-00-650-001).
(2) Make sure that the remaining fuel has been drained from the applicable wing fuel tank (Ref. AMM TASK 28-25-00-650-003).
(3) Make sure that the ACCESS PLATFORM 3M (10 FT) is below the applicable access panel 540AB(640AB).
(4) Make sure that the applicable access panel 540AB(640AB) is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-27-11-000-001).
(5) Make sure that the applicable surge door is open.
(a) For 6QM(8QM), 192QM(193QM):

the surge door 540BZ 640BZ.

(b) For 5QM(7QM):

the surge door 540AZ 640AZ.

(6) Make sure that the applicable tool is on the surge door:

For 540BZ(640BZ) the 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS)

For 540AZ(640AZ) the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS).

4. Procedure
Subtask 28-21-54-420-052-A ** ON A/C NOT FOR ALL

A. Preparation for Installation
(1) Clean the component interfaces and the adjacent areas with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Do an inspection of the component interfaces and the adjacent area.

Subtask 28-21-54-420-053-A ** ON A/C NOT FOR ALL

B. Installation of the Fuel Pump Strainer
(1) For the strainers 5QM(7QM), 6QM(8QM):
(a) Put the strainer (1) in position on the strainer assembly.
(b) Install the six bolts (2).
(c) Apply Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the bolts (2).
(2) For the suction valve strainer:
(a) Put the suction valve strainer assembly in position.
(b) Install the bolt (5).
(c) Install the eight bolts (6).
(d) Apply Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the bolts (5) and (6).

5. Close-up
Subtask 28-21-54-410-051-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the applicable tool 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) or 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS).
(3) Close the applicable fuel-surge access door 540AZ 640AZ 540BZ 640BZ.
(4) Install the applicable access panel 540AB 640AB (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-27-11-400-001).

Subtask 28-21-54-865-055-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR 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 28-21-54-650-052-A ** ON A/C NOT FOR ALL

C. Fuel Configuration
(1) Refuel, defuel or transfer fuel as applicable (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001) or (Ref. AMM TASK 28-25-00-869-001).

Subtask 28-21-54-942-052-A ** ON A/C NOT FOR ALL

D. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:17:30 UTC