Installation of the Refuel Valve Canister

TASK 28-25-52-400-001-A
Installation of the Refuel Valve Canister

WARNING: THIS PROCEDURE USES A FUEL SYSTEM ITEM THAT IS IN A CATEGORY KNOWN AS A CRITICAL DESIGN CONFIGURATION CONTROL LIMITATION (CDCCL). CDCCL IDENTIFIES AN ITEM THAT CAN BE THE SOURCE OF A POSSIBLE FUEL TANK IGNITION. YOU MUST KEEP ALL CDCCL ITEMS IN THE APPROVED CONFIGURATION. DAMAGE, WEAR OR CHANGES TO A CDCCL ITEM CAN CAUSE A POSSIBLE FUEL TANK EXPLOSION.

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.

WARNING: BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES. IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER. IF NECESSARY, GET MEDICAL HELP. AIRCRAFT FUEL IS POISONOUS.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

FIN: 19QM
FIN: 20QM

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 4M (13 FT)
No specific	AR	SAFETY BARRIER(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.01ABA1)	Turbine Fuel-- Kerosene -
(Material No.03FAB1)	Mineral Oil base Grease-- Vaseline or Petrolatum -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	O-RING.	AIPC 28-25-05-27-060
11	O-RING	AIPC 28-25-05-27-130
7	O-RING	AIPC 28-25-05-27-150
11	O-RING	AIPC 28-25-85-28-120
3	O-RING	AIPC 28-25-85-28-150
7	O-RING	AIPC 28-25-85-28-150

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-11-28-650-003-A	Pressure Refuel with Automatic Control
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
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 28-25-51-000-001-A	Removal of the Refuel Valve
TASK 28-25-51-400-001-A	Installation of the Refuel Valve
TASK 57-27-11-000-002-A	Removal of the Access Panel
TASK 57-27-11-400-002-A	Installation of the Access Panel
Refuel Valve Canister 19QM(20QM)

3. Job Set-up
Subtask 28-25-52-941-053-A

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) are in position.

Subtask 28-25-52-860-052-A

B. Aircraft Maintenance Configuration
(1) Make sure that the applicable fuel tank is defueled (Ref. AMM TASK 28-25-00-650-001).
(2) Make sure that the remaining fuel has been drained from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).
(3) Make sure that the ACCESS PLATFORM 4M (13 FT) is below the applicable access panel 540JB (640JB).
(4) Make sure that the applicable wing access panel is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-27-11-000-002):

(a) FOR [19QM] (CANISTER-REFUEL VALVE, L WING TK)
remove 540JB

(b) FOR [20QM] (CANISTER-REFUEL VALVE, R WING TK)
remove 640JB.
(5) Make sure that the refuel valve has been removed (Ref. AMM TASK 28-25-51-000-001).

Subtask 28-25-52-865-051-A

C. 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/RFL/DFL/SPLY	2QU	L24
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L23
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L22

4. Procedure
Subtask 28-25-52-420-054-A

A. Preparation for Installation
(1) Clean the component interfaces and/or the adjacent areas with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Lubricate the new O-ring (11) with Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
(3) Install the AIPC 28-25-05-27-130 O-RING (11) or AIPC 28-25-85-28-120 O-RING (11) in the groove on the face of the refuel valve canister (10).

Subtask 28-25-52-420-050-B

B. Installation of the Refuel Valve Canister 19QM (20QM)
(1) Install the refuel valve canister (10) on the front spar.
(2) Install the spacer (13) and attach with the bolts (12).
(3) Make sure that one of the bolts (12) is correctly bonded:

WARNING: THIS INSTRUCTION IS APPLICABLE TO A CRITICAL DESIGN CONFIGURATION CONTROL LIMITATION (CDCCL) ITEM. CAREFULLY OBEY ALL GIVEN INSTRUCTIONS WHEN YOU DO THIS STEP. IF YOU DO NOT OBEY THESE INSTRUCTIONS, A DANGEROUS CONDITION CAN OCCUR THAT CAN CAUSE A POSSIBLE FUEL TANK EXPLOSION.

(a) Do a bonding check between one of the bolts (12) and the front spar (Ref. AMM TASK 20-28-00-912-802). The bonding resistance must be less than 10 milliohms.
(4) Remove the blanking plugs from the disconnected line ends.

(5) Lubricate the new O-ring (3) with Turbine Fuel-- Kerosene - (Material No.01ABA1) .
(6) Install the AIPC 28-25-05-27-060 O-RING. (3) or AIPC 28-25-85-28-150 O-RING (3) in the groove in the adapter (14). Connect the adapter (14) to the refuel valve canister (10) with the bolts (2).
(7) Lubricate the new O-ring (7) with Turbine Fuel-- Kerosene - (Material No.01ABA1) .

NOTE: You must bond one of the bolts (9) (Ref. AMM TASK 20-28-00-912-802).

(8) Install the AIPC 28-25-05-27-150 O-RING (7) or AIPC 28-25-85-28-150 O-RING (7) in the groove in the elbow (8). Connect the elbow (8) to the refuel valve canister (10) with the bolts (9).
(9) Attach the bonding straps (1) and (6) to the refuel valve canister (10) (Ref. AMM TASK 20-28-00-912-802) with:

the screw (5)
the nut (4).

(10) Make sure that the bonding straps (1) and (6) are correctly bonded:
(a) Do a bonding check between the bonding straps (1) and (6) and the refuel valve canister (10) (Ref. AMM TASK 20-28-00-912-802). The bonding resistance must be less than 10 milliohms.

Subtask 28-25-52-410-050-A

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install all the wing access panels that you removed (Ref. AMM TASK 57-27-11-400-002).
(3) Install the applicable refuel valve (Ref. AMM TASK 28-25-51-400-001).

Subtask 28-25-52-650-052-A

D. Fuel Configuration
(1) Refuel, defuel or transfer fuel as necessary (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 28-25-52-790-050-A

E. Test
(1) Make sure there are no leaks at the interface of the refuel valve canister (10) and the front spar.

5. Close-up
Subtask 28-25-52-942-051-A

A. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:17:42 UTC