Installation of the Refuel/Defuel Coupling/Cap

TASK 28-25-41-400-005-A
Installation of the Refuel/Defuel Coupling/Cap

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

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: 100QM ** ON A/C NOT FOR ALL
FIN: 101QM ** ON A/C NOT FOR ALL
FIN: 40QM
FIN: 41QM

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)
No specific	Torque wrench: range to between 3.4 and 3.0 m.N (30.09 and 26.55 lbf.in )
No specific	Torque wrench: range to between 0.124 and 0.102 m.daN (10.97 and 9.03 lbf.in )
No specific	Torque wrench: range to between 0.79 and 0.67 m.daN (69.91 and 59.29 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.01ABA1)	Turbine Fuel-- Kerosene -
(Material No.03FAB1)	Mineral Oil base Grease-- Vaseline or Petrolatum -
(Material No.05BAA1)	Threadlocking Adhesive-- Low strength -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
622HB, 640JB
522HB, 540JB
FOR [100QM] (COUPLING-REFUEL/DEFUEL, L)
540JB
FOR [100QM] (COUPLING-REFUEL/DEFUEL, L)
FOR [101QM] (CAP-REFUEL/DEFUEL COUPLING, L)
522FB, 522HB, 522JB
FOR [40QM] (CPLG-REFUEL/DEFUEL, R)
640JB
FOR [40QM] (CPLG-REFUEL/DEFUEL, R)
FOR [41QM] (CAP-REFUEL/DEFUEL COUPLING, R)
622FB, 622HB, 622JB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	ORING	AIPC 28-25-05-26-373
10	ORING	AIPC 28-25-05-26-375
52	SHIM	AIPC 28-25-41-01-030
58	SHIM	AIPC 28-25-41-01-030
51	O-RING	AIPC 28-25-41-01-040
57	O-RING	AIPC 28-25-41-01-040
10	O-RING	AIPC 28-25-85-26-230
2	O-RING	AIPC 28-25-85-26-240

E. 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 57-27-11-400-002-A	Installation of the Access Panel
TASK 57-41-37-000-006-A	Removal of the Access Panels
TASK 57-41-37-400-006-A	Installation of the Access Panels
SRM 517612
SRM 517612	(for corrective action)
Refuel Coupling/Cap - Right Wing ** ON A/C NOT FOR ALL
Refuel Coupling/Cap - Left Wing (Right Wing) ** ON A/C NOT FOR ALL
Dimensions and Positions, Right Wing
Dimensions and Positions, Left Wing ** ON A/C NOT FOR ALL
Shroud-Ring Position and Element Assembly
FOR [100QM] (COUPLING-REFUEL/DEFUEL, L)
TASK 57-27-11-000-002-A	Removal of the Access Panel
FOR [100QM] (COUPLING-REFUEL/DEFUEL, L)
FOR [101QM] (CAP-REFUEL/DEFUEL COUPLING, L)
TASK 57-41-37-000-006-A	Removal of the Access Panels
TASK 57-41-37-400-006-A	Installation of the Access Panels
Refuel Coupling/Cap - Left Wing (Right Wing) ** ON A/C NOT FOR ALL
FOR [40QM] (CPLG-REFUEL/DEFUEL, R)
TASK 57-27-11-000-002-A	Removal of the Access Panel
FOR [40QM] (CPLG-REFUEL/DEFUEL, R)
FOR [41QM] (CAP-REFUEL/DEFUEL COUPLING, R)
TASK 57-41-37-000-006-A	Removal of the Access Panels
TASK 57-41-37-400-006-A	Installation of the Access Panels
Refuel Coupling/Cap - Left Wing (Right Wing) ** ON A/C NOT FOR ALL
Refuel Coupling/Cap - Right Wing ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-25-41-941-058-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 in the fuel tank (Ref. AMM TASK 28-10-00-910-001).
(2) Make sure that the SAFETY BARRIER(S) are in position.

Subtask 28-25-41-860-052-A ** ON A/C NOT FOR ALL

Subtask 28-25-41-860-052-B ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 4M (13 FT) is below the applicable access panel.
(2) Make sure that the applicable access panels are removed:
(a) FOR [40QM] (CPLG-REFUEL/DEFUEL, R), [41QM] (CAP-REFUEL/DEFUEL COUPLING, R)
622FB 622HB and 622JB (Ref. AMM TASK 57-41-37-000-006).
(3) Make sure that the applicable access panel is removed (Ref. AMM TASK 28-10-00-910-002):
(a) FOR [40QM] (CPLG-REFUEL/DEFUEL, R)
640JB (Ref. AMM TASK 57-27-11-000-002).
(4) Make sure that the applicable access panels are removed:
(a) FOR [100QM] (COUPLING-REFUEL/DEFUEL, L), [101QM] (CAP-REFUEL/DEFUEL COUPLING, L)
522FB 522HB and 522JB (Ref. AMM TASK 57-41-37-000-006).
(5) Make sure that the applicable access panel is removed (Ref. AMM TASK 28-10-00-910-002):
(a) FOR [100QM] (COUPLING-REFUEL/DEFUEL, L)
540JB (Ref. AMM TASK 57-27-11-000-002).

Subtask 28-25-41-865-056-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 28-25-41-420-055-B

A. Preparation for Installation
(1) Make sure that the sealing around the heads of the bolts (1) and (9) is not broken. If necessary repair the sealing SRM 517612.
(2) Use Non Aqueous Cleaner-General - - (Material No.08BAA9) and a clean Textile-Lint free Cotton - (Material No.14SBA1) to clean:

The joint face on the coupling connector
The joint face on the front spar.

(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that the parts retained from the removed component are clean and in the correct condition.

Subtask 28-25-41-420-056-C ** ON A/C NOT FOR ALL

B. Installation of the Refuel/Defuel Coupling-Cap
(1) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 28-25-05-26-375 ORING (10) and the new AIPC 28-25-05-26-373 ORING (2).
(a) Install the O-ring (10) into the groove of the coupling connector.
(b) Install an O-ring (2) on each bolt (1).
(c) Remove the blanking plug from the coupling connector.
(d) Carefully install the coupling (4) onto the coupling connector and the bolts (1) and (9).

NOTE: Airbus recommends you to keep the sealing of the bolts to prevent the movement of the bolts.

(e) Make sure the part of the bolts (1) and (9) (that has no thread) does not come into view through the hole(s):

If you see the part of the bolts (1) or (9) (that has no thread), install the washer(s) removed during the removal procedure.

(f) Install the nuts (3) and (8) on the bolts (1) and (9). Tighten them with your hand.
(g) Engage a hexagon key in the end of each bolt (1) and (9) to prevent the movement of the bolt.
(h) TORQUE the nuts (3) and (8) in an opposite sequence to between 0.79 and 0.67 m.daN (69.91 and 59.29 lbf.in )

.
(i) Make sure that you can see a minimum of one and half thread from each nut (3) and (8).
(j) Make sure that the sealing around the heads of the bolt(s) (1) and (9) is not broken. If necessary, repair the sealing SRM 517612.
(k) Make sure that the coupling (4) is correctly bonded to the front spar:

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.

1 Do a bonding check between the coupling (4) and the front spar (Ref. AMM TASK 20-28-00-912-802).
(l) Make sure that the work area is clean and clear of tools and other items.
(m) If the chain assembly (13) is removed from the cap (7), do the steps that follow:
1 Align the chain assembly (13) on the cap (7).
2 Apply Threadlocking Adhesive-- Low strength - (Material No.05BAA1) on the screws (11).
3 Let the Threadlocking Adhesive-- Low strength - (Material No.05BAA1) cure. Refer to the manufacturer instructions for cure time.
4 Install the screws (11).
5 TORQUE the screws (11) to between 0.124 and 0.102 m.daN (10.97 and 9.03 lbf.in )

.
(n) Install the chain (6) onto the chain attachment lug (5).

NOTE: The chain (6) is spring loaded into a protection sleeve on the cap (7).

(o) Make sure that the handle of the refuel coupling cap (7) is in the correct position.

Subtask 28-25-41-420-056-D ** ON A/C NOT FOR ALL

B. Installation of the Refuel/Defuel Coupling-Cap
(1) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 28-25-85-26-230 O-RING (10) and the new AIPC 28-25-85-26-240 O-RING (2).
(a) Install the O-ring (10) into the groove of the coupling connector.
(b) Install one O-ring (2) on each bolt (1).
(c) Remove the blanking plug from the coupling connector.
(d) Carefully install the coupling (4) onto the coupling connector and the bolts (1) and (9).

NOTE: Sealing of the bolts will be kept if you can prevent movement of the bolts.

(e) Make sure the unthreaded part of the bolts (1) and (9) does not show through the hole(s). If the unthreaded part of the bolts (1) or (9) shows, install the washer(s) retained on removal.
(f) Install the nuts (3) and (8) on the bolts (1) and (9) and tighten by hand.
(g) Engage a hexagon key in the end of each bolt (1) and (9) to prevent movement of the bolt.
(h) TORQUE the nuts (3) and (8) in an opposite sequence to between 0.79 and 0.67 m.daN (69.91 and 59.29 lbf.in )

.
(i) Make sure that you can see a minimum of 1.5 threads from each nut (3) and (8).
(j) Make sure that the sealing around the heads of the bolt(s) (1) and (9) is not broken. If necessary repair the sealing SRM 517612.
(k) Make sure that the coupling (4) is correctly bonded to the front spar:

1 Do a bonding check between the coupling (4) and the front spar (Ref. AMM TASK 20-28-00-912-802).
(l) Make sure that the work area is clean and clear of tools and other items.
(m) If the chain assembly (13) is removed from the cap (7), do these steps that follow:
1 Align the chain assembly (13) on the cap (7).
2 Apply Threadlocking Adhesive-- Low strength - (Material No.05BAA1) on the screws (11).
3 Let the Threadlocking Adhesive-- Low strength - (Material No.05BAA1) cure. Refer to the manufacturer instructions for cure time.
4 Install the screws (11).
5 TORQUE the screws (11) to between 0.124 and 0.102 m.daN (10.97 and 9.03 lbf.in )

.
(n) Install the chain (6) on to the chain attachment lug (5).

NOTE: The chain (6) is spring loaded into a protection sleeve on the cap (7).

(o) Make sure that the handle of the refuel coupling-cap (7) is in the correct position.

Subtask 28-25-41-410-058-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Install the applicable access panels:

(a) FOR [40QM] (CPLG-REFUEL/DEFUEL, R), [41QM] (CAP-REFUEL/DEFUEL COUPLING, R)
Install 622FB 622HB and 622JB (Ref. AMM TASK 57-41-37-400-006).

Subtask 28-25-41-820-053-E ** ON A/C NOT FOR ALL

D. Adjustment of the Coupling
(1) Do the adjustment of the coupling cap as follows:
(a) Make sure that these dimensions are correct:

Dimensions and Positions, Right Wing ** ON A/C NOT FOR ALL

Dimension 'a' must be equal at all positions around the cap, +/- 0.5 mm (0.0197 in.)
Dimension 'x' must not be more than 1 mm (0.0394 in.)
Dimension ' y ' must not be more than 1 mm (0.0394 in.)
Dimension 'z' must not be more than 0.13 mm (0.0051 in.).

(b) If dimension(s) 'a', 'x', 'y' and/or dimension 'z' is/are incorrect, do the steps that follow:
1 Temporarily remove access panel that follows:
a FOR [40QM] (CPLG-REFUEL/DEFUEL, R), [41QM] (CAP-REFUEL/DEFUEL COUPLING, R)

Refuel Coupling/Cap - Right Wing ** ON A/C NOT FOR ALL

2 Remove the refuel coupling cap (7) or (9) from the coupling (4).

Shroud-Ring Position and Element Assembly ** ON A/C NOT FOR ALL

NOTE: These steps are applicable only if you use the refuel coupling cap (9).

1 Loosen the bolts (56).
2 Adjust the position of the shroud ring (54) and the element assembly (53) until dimension 'a' is correct.
3 TORQUE the bolts (56) to between 3.4 and 3.0 m.N (30.09 and 26.55 lbf.in )

.
4 Install the refuel coupling cap (9) on the coupling (4).
(d) If dimension(s) 'x', 'y' and/or 'z' is/are incorrect, do the steps that follow:

NOTE: These steps are applicable only if you use the refuel coupling cap (9).

1 Remove the refuel coupling cap (9) from the coupling (4).
2 Hold the element assembly (53) and remove the bolts (56) and the washers (55).
3 Remove the shroud ring (54), the element assembly (53) and the laminated shim (52).
4 Remove and discard the O-ring (51).
5 Adjust the thickness of the AIPC 28-25-41-01-030 SHIM (52) until dimension 'x', 'y' and/or dimension 'z' is/are correct.

NOTE: The maximum permitted thickness is 4.4 mm (0.1732 in.) and the minimum permitted thickness is 0 mm (0 in.).

6 Lubricate the new AIPC 28-25-41-01-040 O-RING (51) with Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
7 Install the O-ring (51) and the laminated shim (52).
8 Install the element assembly (53) and the shroud ring (54) in the correct position.
9 Install the washers (55) the bolts (56).
10 TORQUE the bolts (56) to between 3.4 and 3.0 m.N (30.09 and 26.55 lbf.in )

.
11 Install the refuel coupling cap (9) on the coupling (4).
(e) If dimension 'a' is incorrect, do the steps that follow:

NOTE: These steps are applicable only if you use the refuel coupling cap (7).

1 Loosen the bolts (62) and (64).
2 Adjust the position of the shroud ring (60) and the element assembly (59) until dimension 'a' is correct.
a Adjust the element assembly (59) and the shroud ring (60) to make sure that the lug does not touch the refuel cap.
b Make sure that the position of the shroud support ring is 22.30 deg (22.3 deg) to the chain attachment lug.
3 TORQUE the bolts (62) and (64) to between 3.4 and 3.0 m.N (30.09 and 26.55 lbf.in )

.
4 Install the refuel coupling cap (7) on the coupling (4).
(f) If dimension(s) 'x', 'y' and/or 'z' is/are incorrect, do the steps that follow:

NOTE: These steps are applicable only if you use the refuel coupling cap (7).

1 Remove the refuel coupling cap (7) from the coupling (4).
2 Hold the element assembly (59) and remove the bolts (62), washers (61), bolt (64) and tab washer (63).
3 Remove the shroud ring (60), the element assembly (59) and the laminated shim(s) (58).
4 Remove and discard the O-ring (57).
5 Adjust the thickness of the AIPC 28-25-41-01-030 SHIM (58) until dimension 'x', 'y' and/or dimension 'z' is/are correct.

NOTE: The maximum permitted thickness is 4.4 mm (0.1732 in.) and the minimum permitted thickness is 0 mm (0 in.).

6 Lubricate the new AIPC 28-25-41-01-040 O-RING (57) with Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
7 Install the O-ring (57) and the laminated shim(s) (58).
8 Install the element assembly (59) and the shroud ring (60) in the correct position.
a Adjust the element assembly (59) and the shroud ring (60) to make sure that the lug does not touch the refuel cap.
b The position of the shroud support ring is 22.30 deg (22.3 deg) to the chain attachment lug.
9 Install the washers (61), bolts (62), tab washer (63) and bolt (64).
10 TORQUE the bolts (62) and (64) to between 3.4 and 3.0 m.N (30.09 and 26.55 lbf.in )

.
11 Install the refuel coupling cap (7) on the coupling (4).

Subtask 28-25-41-860-053-A ** ON A/C NOT FOR ALL

E. Preparation for Test
(1) Install the access panel 622HB (Ref. AMM TASK 57-41-37-400-006).
(2) Measure the dimensions 'a', 'x', 'y' and 'z' again to make sure that they are correct.
(3) Install the access panel 640JB (Ref. AMM TASK 57-27-11-400-002).
(4) Refuel the aircraft through the coupling you installed (Ref. AMM TASK 12-11-28-650-003).
(5) Remove the access panel 622HB (Ref. AMM TASK 57-41-37-000-006).

Subtask 28-25-41-410-058-B ** ON A/C NOT FOR ALL

F. Close Access
(1) Install the applicable access panels:

(a) FOR [40QM] (CPLG-REFUEL/DEFUEL, R), [41QM] (CAP-REFUEL/DEFUEL COUPLING, R)
Install 622FB 622HB and 622JB (Ref. AMM TASK 57-41-37-400-006).
(b) FOR [100QM] (COUPLING-REFUEL/DEFUEL, L), [101QM] (CAP-REFUEL/DEFUEL COUPLING, L)
Install 522FB 522HB and 522JB (Ref. AMM TASK 57-41-37-400-006).

Subtask 28-25-41-820-053-B

DELETED

Subtask 28-25-41-820-053-C

DELETED

Subtask 28-25-41-820-053-D ** ON A/C NOT FOR ALL

G. Adjustment of the Coupling
(1) Do the adjustment of the coupling cap as follows:
(a) Make sure that these dimensions are correct:

Dimensions and Positions, Right Wing ** ON A/C NOT FOR ALL

Dimensions and Positions, Left Wing ** ON A/C NOT FOR ALL

Dimension 'a' must be equal at all positions around the cap, +/- 0.5 mm (0.0197 in.)
Dimension 'x' must not be more than 1 mm (0.0394 in.)
Dimension ' y ' must not be more than 1 mm (0.0394 in.)
Dimension 'z' must not be more than 0.13 mm (0.0051 in.).

(b) If dimension(s) 'a', 'x', 'y' and/or dimension 'z' is/are incorrect, do the steps that follow:
1 Temporarily remove applicable access panel:
a FOR [40QM] (CPLG-REFUEL/DEFUEL, R), [41QM] (CAP-REFUEL/DEFUEL COUPLING, R)

Refuel Coupling/Cap - Left Wing (Right Wing) ** ON A/C NOT FOR ALL

b FOR [100QM] (COUPLING-REFUEL/DEFUEL, L), [101QM] (CAP-REFUEL/DEFUEL COUPLING, L)
Remove 522HB (Ref. AMM TASK 57-41-37-000-006).

Refuel Coupling/Cap - Left Wing (Right Wing) ** ON A/C NOT FOR ALL

2 Remove the refuel coupling cap (7) or (9) from the coupling (4).

Shroud-Ring Position and Element Assembly ** ON A/C NOT FOR ALL

NOTE: These steps are applicable only if you use the refuel coupling cap (9).

.
4 Install the refuel coupling cap (9) on the coupling (4).
(d) If dimension(s) 'x', 'y' and/or 'z' is/are incorrect, do the steps that follow:

NOTE: These steps are applicable only if you use the refuel coupling cap (9).

NOTE: The maximum permitted thickness is 4.4 mm (0.1732 in.) and the minimum permitted thickness is 0 mm (0 in.).

.
11 Install the refuel coupling cap (9) on the coupling (4).
(e) If dimension 'a' is incorrect, do the steps that follow:

NOTE: These steps are applicable only if you use the refuel coupling cap (7).

.
4 Install the refuel coupling cap (7) on the coupling (4).
(f) If dimension(s) 'x', 'y' and/or 'z' is/are incorrect, do the steps that follow:

NOTE: These steps are applicable only if you use the refuel coupling cap (7).

NOTE: The maximum permitted thickness is 4.4 mm (0.1732 in.) and the minimum permitted thickness is 0 mm (0 in.).

.
11 Install the refuel coupling cap (7) on the coupling (4).

Subtask 28-25-41-860-053-B ** ON A/C NOT FOR ALL

H. Preparation for Test
(1) Install the applicable access panel(s) 522HB ( 622HB) (Ref. AMM TASK 57-41-37-400-006).
(2) Measure the dimensions 'a', 'x', 'y' and 'z' again to make sure that they are correct.
(3) Install the applicable access panel(s) 540JB ( 640JB) (Ref. AMM TASK 57-27-11-400-002).
(4) Refuel the aircraft through the coupling you installed (Ref. AMM TASK 12-11-28-650-003).
(5) Remove the applicable access panel(s) 522HB ( 622HB) (Ref. AMM TASK 57-41-37-000-006).

Subtask 28-25-41-790-052-B

I. Test
(1) Do the test of the coupling-cap that attached to the coupling with a chain as follows:
(a) Examine the coupling joints and each bolt position for leaks.
(b) If you adjusted the laminated shim(s) (58), also examine the joint of the element assembly (59) for leaks.

5. Close-up
Subtask 28-25-41-410-059-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) Install the access panel 622HB (Ref. AMM TASK 57-41-37-400-006).

Subtask 28-25-41-410-059-B ** 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) Install the applicable access panel(s) 522HB ( 622HB) (Ref. AMM TASK 57-41-37-400-006).

Subtask 28-25-41-865-057-A

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/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

Subtask 28-25-41-942-055-A

C. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(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 07:03:13 UTC