Removal of the Refuel/Defuel Coupling-Element Assembly

TASK 28-25-41-000-005-A
Removal of the Refuel/Defuel Coupling-Element Assembly

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 4M (13 FT)
No specific	1	CONTAINER 10 L(2 1/2 USGAL)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
622KB
192MB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 57-41-37-000-006-A	Removal of the Access Panels
Refuel/Defuel Coupling Element Assembly - Location and Detail ** ON A/C NOT FOR ALL
Refuel/Defuel Coupling Element Assembly - Location and Detail ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-25-41-941-060-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 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 28-25-41-865-052-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** 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 ALL
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L22

Subtask 28-25-41-010-060-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT) below the applicable refuel/defuel coupling 100QM(40QM).
(2) Remove the applicable access panel 522HB(622HB) (Ref. AMM TASK 57-41-37-000-006).

Subtask 28-25-41-010-060-B ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT) below the refuel/defuel coupling 40QM.
(2) Remove the access panel 622HB (Ref. AMM TASK 57-41-37-000-006).

Subtask 28-25-41-860-056-A ** ON A/C NOT FOR ALL

D. Aircraft Maintenance Configuration
(1) Open access door 192MB.
(2) On refuel/defuel control-panel 800VU:
(a) Put the MODE SELECT switch in the OFF position and lower the guard:
1 Make sure that the DEFUEL/XFR valve is in shut position (light 21QU goes off).
(b) Put all the REFUEL VALVES switches in the NORM position and lower the guard.
(3) Close access door 192MB.

NOTE: If the door is operated in battery power, Airbus recommends you not to open the door more than the necessary time. If you keep the door open for a longer time the battery power decreases.

Subtask 28-25-41-860-056-B ** ON A/C NOT FOR ALL

D. Aircraft Maintenance Configuration
(1) Open access door 622KB.
(2) On refuel/defuel control-panel 800VU:
(a) Put the MODE SELECT switch in the OFF position and lower the guard:
1 Make sure that the DEFUEL/XFR valve is in shut position (light 21QU goes off).
(b) Put all the REFUEL VALVES switches in the NORM position and lower the guard.
(3) Close access door 622KB.

NOTE: If the door is operated in battery power, Airbus recommends you not to open the door more than the necessary time. If you keep the door open for a longer time the battery power decreases.

4. Procedure

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.

Subtask 28-25-41-020-063-A

A. Removal of the Refuel/Defuel Coupling-Element Assembly
(1) Do the steps that follow, if:

The check valve in the element assembly is operational
The coupling cap is connected to the coupling with a lanyard.

(a) Remove the coupling cap (8) from the coupling (1).

NOTE: The coupling cap (8) will hang by the lanyard (9) from the shroud ring (5).

(b) Remove the nut (11) and the screw (10).
(c) Remove the lanyard (9) from the attachment lug on the shroud ring (5).
(d) Remove the coupling cap (8) with the lanyard (9).
(e) Put a CONTAINER 10 L(2 1/2 USGAL) below the coupling (1).
(f) Manually operate the check valve (in the element assembly (4)) to drain the remaining fuel into the CONTAINER 10 L(2 1/2 USGAL).
(g) Remove the CONTAINER 10 L(2 1/2 USGAL).
(h) Discard the drained fuel in the approved area.
(i) Hold the element assembly (4) and remove the bolts (7) and the washers (6).
(j) Remove the shroud ring (5), the element assembly (4) and the laminated shim(s) (3).
(k) Remove and discard the O-ring (2).
(2) Do the steps that follow, if:

The check valve in the element assembly is not operational
The coupling cap is connected to the coupling with a lanyard.

(a) Remove the coupling cap (8) from the coupling (1).

NOTE: The coupling cap (8) will hang by the lanyard (9) from the shroud ring (5).

(b) Remove the nut (11) and the screw (10).
(c) Remove the lanyard (9) from the attachment lug on the shroud ring (5).
(d) Remove the coupling cap (8) with the lanyard (9).
(e) Hold the element assembly (4) and remove the bolts (7) and the washers (6).
(f) Put a CONTAINER 10 L(2 1/2 USGAL) below the coupling (1).
(g) Carefully remove the shroud ring (5) and the element assembly (4):
1 Momentarily drain the remaining fuel into the CONTAINER 10 L(2 1/2 USGAL).
(h) Remove the CONTAINER 10 L(2 1/2 USGAL).
(i) Discard the drained fuel in the approved area.
(j) Remove the laminated shim(s) (3).
(k) Remove and discard the O-ring (2).

Subtask 28-25-41-020-064-A

B. Removal of the Refuel/Defuel Coupling-Element Assembly
(1) Do the steps that follow, if:

The check valve in the element assembly is operational
The coupling cap is connected to the coupling with a chain.

(a) Remove the coupling cap (28) from the coupling (21).

NOTE: The coupling cap (28) will hang by the chain (29) from the shroud ring (25).

(b) Remove the bolt (27) that attaches the attachment tag (30) to the shroud ring (25).

NOTE: The attachment tag (30) will stay connected to the chain (29).

(c) Remove the coupling cap (28) with the chain (29).
(d) Put a CONTAINER 10 L(2 1/2 USGAL) below the coupling (21).
(e) Manually operate the check valve (in the element assembly (24)) to drain the remaining fuel into the CONTAINER 10 L(2 1/2 USGAL).
(f) Remove the CONTAINER 10 L(2 1/2 USGAL).
(g) Discard the drained fuel in the approved area.
(h) Hold the element assembly (24) and remove the remaining bolts (27) and the washers (26).
(i) Remove the shroud ring (25), the element assembly (24) and the laminated shim(s) (23).
(j) Remove and discard the O-ring (22).
(2) Do the steps that follow, if:

The check valve in the element assembly is not operational
The coupling cap is connected to the coupling with a chain.

(a) Remove the coupling cap (28) from the coupling (21).

NOTE: The coupling cap (28) will hang by the chain (29) from the shroud ring (25).

(b) Remove the bolt (27) that attaches the attachment tag (30) to the shroud ring (25).

NOTE: The attachment tag (30) will stay connected to the chain (29).

(c) Remove the coupling cap (28) with the chain (29).
(d) Hold the element assembly (24) and remove the remaining bolts (27) and the washers (26).
(e) Put a CONTAINER 10 L(2 1/2 USGAL) below the coupling (21).
(f) Carefully remove the shroud ring (25) and the element assembly (24:
1 Momentarily drain the remaining fuel into the CONTAINER 10 L(2 1/2 USGAL).
(g) Remove the CONTAINER 10 L(2 1/2 USGAL).
(h) Discard the drained fuel in the approved area.
(i) Remove the laminated shim(s) (23).
(j) Remove and discard the O-ring (22).

[Rev.10 from 2021] 2026.04.02 06:17:39 UTC