Discard and replace "O" Rings of the Fuel-Feed Pipe Connectors at the Front Spar (RIB8) with the new "O" Rings

TASK 28-20-00-960-804-A
Discard and replace "O" Rings of the Fuel-Feed Pipe Connectors at the Front Spar (RIB8) with the new "O" Rings

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

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

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.

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: YOU MUST USE THE NECESSARY PRECAUTIONS TO PREVENT INJURY FROM HEAT. THE LOCATION FOR THIS TASK CAN BE VERY HOT.

CAUTION: YOU MUST DISCARD O-RINGS ON DISCONNECTED PIPES AND INSTALL NEW O-RINGS DURING INSTALLATION OF THE PIPES. THIS PREVENTS POSSIBLE LEAKS.

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	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	TIE WRAP(S)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.40 and 0.30 m.daN (35.40 and 26.55 lbf.in )
No specific	Torque wrench: range to between 0.80 and 0.70 m.daN (70.80 and 61.95 lbf.in )
No specific	Torque wrench: range to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
No specific	Torque wrench: range to between 3.22 and 2.69 m.daN (23.75 and 19.84 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03FAB1)	Mineral Oil base Grease-- Vaseline or Petrolatum -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
471AL
414FR, 472BR
413DL, 413ET
471AR, 471BR, 471CL, 471CR
471BL
472AR
FOR [1000EM2] (ENGINE-2)
481AL
423FL, 482BR
481BL
481AR, 481BR, 481CL, 481CR
423ET, 424DR
482AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
16	ORING	AIPC 28-21-05-25-070
9	ORING	AIPC 28-21-05-25-070
15	ORING	AIPC 28-21-05-25-080
25	ORING	AIPC 28-21-05-25-140
6	ORING	AIPC 28-21-05-25-160
31	ORING	AIPC 28-21-05-25-230
30	ORING	AIPC 28-21-05-25-240
43	ORING	AIPC 28-21-06-01-070
50	ORING	AIPC 28-21-06-01-070
44	ORING	AIPC 28-21-06-01-100
49	RING	AIPC 28-21-06-01-110

E. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
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 27-80-00-866-004-A	Extending the Slats on the Ground
TASK 27-80-00-866-005-A	Retracting the Slats on the Ground
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-21-00-790-002-A	Visual Check of Pipes, Couplings and LP Valve External to Tank From Front Spar to Disconnect Panel For Leaks With Booster Pump On and LP Valve Open
TASK 28-24-51-000-001-A	Removal of the LP Fuel Valve Actuator
TASK 28-24-51-400-001-A	Installation of the LP Fuel Valve Actuator
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 71-00-00-710-002-A	Wet Motoring Check
TASK 71-00-00-710-002-B	Wet Motoring Check
TASK 71-00-00-710-045-A	Test No.1 : Dry Motor Leak Check
TASK 71-00-00-720-814-A	Test No. 2A - Engine Motor Leak Test (Wet Method)
TASK 73-11-06-000-801-A	Removal of the Fuel Filter Element
TASK 73-11-06-400-801-A	Installation of the Fuel Filter Element
TASK 73-11-10-000-001-A	Removal of the Fuel Pump and Filter Assembly
TASK 73-11-10-000-003-A	Removal of the Fuel Pump and Filter Assembly
TASK 73-11-10-400-001-A	Installation of the Fuel Pump and Filter Assembly
TASK 73-11-10-400-003-A	Installation of the Fuel Pump and Filter Assembly
TASK 73-12-42-000-010-B	Removal of the Fuel Filter Element
TASK 73-12-42-400-010-B	Installation of the Fuel Filter Element
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
Fuel-Feed Pipe Seals - Location and Detail
FOR [1000EM1] (ENGINE-1)
TASK 54-53-11-000-002-A	Removal of the Pylon-to-Wing Access Panels
TASK 54-53-11-000-002-B	Removal of the Pylon-to-Wing Access Panels
TASK 54-53-11-000-804-A	Removal of the Pylon-to-Wing Access Panels and Doors
TASK 54-53-11-400-002-A	Installation of the Pylon-to-Wing Access Panels
TASK 54-53-11-400-002-B	Installation of the Pylon-to-Wing Access Panels
TASK 54-53-11-400-804-A	Installation of the Pylon-to-Wing Access Panels and Doors
FOR [1000EM2] (ENGINE-2)
TASK 54-53-11-000-002-A	Removal of the Pylon-to-Wing Access Panels
TASK 54-53-11-000-002-B	Removal of the Pylon-to-Wing Access Panels
TASK 54-53-11-000-804-A	Removal of the Pylon-to-Wing Access Panels and Doors
TASK 54-53-11-400-002-A	Installation of the Pylon-to-Wing Access Panels
TASK 54-53-11-400-002-B	Installation of the Pylon-to-Wing Access Panels
TASK 54-53-11-400-804-A	Installation of the Pylon-to-Wing Access Panels and Doors

3. Job Set-up
Subtask 28-20-00-941-062-A

A. Safety Precautions
(1) 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.

Subtask 28-20-00-860-069-A

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(3) In the cockpit, on ENG panel 115VU:

Make sure that the ENG/MODE selector switch is in the NORM position.
Make sure that the ENG/MASTER 1(2) control switch is in the OFF position.
Put a WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.

(4) Make sure that engine 1 and engine 2 shutdown occurs for a minimum of one hour before you do this procedure.
(5) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is OFF.
(6) Put the WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).
(7) In the cockpit, on the ECAM control panel:
(a) Push the FUEL pushbutton switch:

The FUEL page comes into view on the lower ECAM DU.

(b) Make sure that the engine LP valves are closed (amber cross-line) on the lower ECAM DU.

Subtask 28-20-00-865-069-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
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

Subtask 28-20-00-040-051-A ** ON A/C NOT FOR ALL

D. Deactivation of the Thrust Reverser (T/R)

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation procedure of the thrust reverser system (Ref. AMM TASK 78-30-00-040-805).

Subtask 28-20-00-040-051-C ** ON A/C NOT FOR ALL

D. Make the thrust reverser (T/R) unserviceable for maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).

Subtask 28-20-00-040-051-D ** ON A/C NOT FOR ALL

D. Deactivation of the Thrust Reverser (T/R)

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation procedure of the thrust reverser system (Ref. AMM TASK 78-30-00-040-012).

Subtask 28-20-00-040-051-F ** ON A/C NOT FOR ALL

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

D. Make the Thrust Reverser (T/R) Unserviceable for Maintenance
(Ref. AMM TASK 78-30-00-481-041).

Subtask 28-20-00-010-063-A ** ON A/C NOT FOR ALL

E. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon at zone 470.
(b) For the right pylon at zone 480.
(2) FOR [1000EM1] (ENGINE-1)
(a) Remove access panels 471AL, 472AR, 471BL, 472BR and 414FR (Ref. AMM TASK 54-53-11-000-002).
(3) FOR [1000EM2] (ENGINE-2)
(a) Remove access panels 481AL, 482AR, 481BL, 482BR and 423FL (Ref. AMM TASK 54-53-11-000-002).

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(4) If necessary, extend the slats (Ref. AMM TASK 27-80-00-866-004).

Subtask 28-20-00-010-063-D ** ON A/C NOT FOR ALL

E. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon at zone 470.
(b) For the right pylon at zone 480.
(2) FOR [1000EM1] (ENGINE-1)
(a) Remove access panels 471AL, 472AR, 413DL and 413ET (Ref. AMM TASK 54-53-11-000-804).
(3) FOR [1000EM2] (ENGINE-2)
(a) Remove access panels 481AL, 482AR, 424DR and 423ET (Ref. AMM TASK 54-53-11-000-804).

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(4) If necessary, extend the slats (Ref. AMM TASK 27-80-00-866-004).

Subtask 28-20-00-010-063-F ** ON A/C NOT FOR ALL

E. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon at zone 470.
(b) For the right pylon at zone 480.
(2) FOR [1000EM1] (ENGINE-1)
(a) Remove access panels 471AL, 471AR, 471BL, 471BR, 471CL and 471CR (Ref. AMM TASK 54-53-11-000-002).
(3) FOR [1000EM2] (ENGINE-2)
(a) Remove access panels 481AL, 481AR, 481BL, 481BR, 481CL and 481CR (Ref. AMM TASK 54-53-11-000-002).

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(4) If necessary, extend the slats (Ref. AMM TASK 27-80-00-866-004).

4. Procedure
Subtask 28-20-00-680-055-A ** ON A/C NOT FOR ALL

A. Drain the Fuel from the Fuel Feed Pipe at Front Spar (RIB8)
(1) To drain the fuel from the fuel feed pipe at the front spar (RIB8):
(a) Remove the drain plug from the fuel filter housing (Ref. AMM TASK 73-11-10-000-001).
(2) When the fuel flow stops, install the drain plug in the fuel filter housing (Ref. AMM TASK 73-11-10-400-001).

Subtask 28-20-00-680-055-B ** ON A/C NOT FOR ALL

A. Drain the Fuel from the Fuel Feed Pipe at Front Spar (RIB8)
(1) To drain the fuel from the fuel feed pipe at the front spar (RIB8):
(a) Remove the drain plug from the fuel-cooled oil cooler (Ref. AMM TASK 73-12-42-000-010).
(2) When the fuel flow stops, install the drain plug in the fuel-cooled oil cooler (Ref. AMM TASK 73-12-42-400-010).

Subtask 28-20-00-680-055-D ** ON A/C NOT FOR ALL

A. Drain the Fuel from the Fuel Feed Pipe at Front Spar (RIB8)
(1) To drain the fuel from the fuel feed pipe at the front spar (RIB8):
(a) Remove the drain plug from fuel filter housing (Ref. AMM TASK 73-11-06-000-801).
(2) When the fuel flow stops, install the drain plug in the fuel filter housing (Ref. AMM TASK 73-11-06-400-801).

Subtask 28-20-00-680-055-F ** ON A/C NOT FOR ALL

A. Drain the Fuel from the Fuel Feed Pipe at Front Spar (RIB8)
(1) To drain the fuel from the fuel feed pipe at the front spar (RIB8):
(a) Remove the drain plug from fuel filter housing (Ref. AMM TASK 73-11-10-000-003).
(2) When the fuel flow stops, install the drain plug in the fuel filter housing (Ref. AMM TASK 73-11-10-400-003).

Subtask 28-20-00-020-056-A

B. Removal of the Seals on the Fuel Feed Pipe at Front Spar (RIB8)

Fuel-Feed Pipe Seals - Location and Detail

(1) Disconnect the pipe assembly (32) as follows:
(a) Remove the nuts (46) and the bolts (54) from the clamps (45).
(b) Disengage the sleeve (47) and move it away on the pipe assembly (52).

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(c) Cut, remove and discard the lockwire from the nut (48) and (51).
(d) Loosen the nut (48).
(e) Move the nut (48) with retaining ring (49) away from the connector (53).
(f) Remove and discard the O-rings (44) and (43) from the pipe assembly (32).
(g) Remove and discard the O-ring (50) from the pipe assembly (52).
(h) Remove the nuts (35) and (33), the bolts (36) and (41) and the bonding strap (34) and (42).
(i) Remove the bolt (37), the washers (38) and (40) and the tab washer (39).
(j) Remove the bolts (29).
(k) Disconnect the pipe assembly (32) from the sleeve (26).
(l) Remove and discard the O-rings (30) and (31).
(2) Remove the pipe assembly (7) as follows:
(a) Remove the nuts (22) and (8), the bolts (23) and (20) and the bonding straps (21) and (2).
(b) Safety the bonding strap (2) to the LP shut-off valve (1) with a TIE WRAP(S).
(c) Remove the bolts (4) and the nuts (5).
(d) Remove the bolt (28), nut (19), washers (27) and (18) and tab washer (17).
(e) Remove the sleeves (26) and (24).
(f) Remove and discard the O-ring (25).
(g) If required, remove the LP fuel-valve actuator (3) (Ref. AMM TASK 28-24-51-000-001) from the LP shut-off valve (1).

(h) Cut and discard the lockwire from the nuts (14) and (10) and the connector (12).
(i) Loosen the nuts (14) and (10) from the connector (12).
(j) Remove the pipe assembly (7) from the LP shut-off valve (1).
(k) Remove and discard the O-rings (6), (16) and (15).
(l) Remove the nuts (14) and (10) and the connector (12) from the LP shut-off valve (1).
(m) Remove the retaining rings (11) and (13).
(n) Remove and discard the O-ring (9) from the LP shut-off valve (1).
(3) Put the PLUG-BLANKING in each disconnected line end.

Subtask 28-20-00-410-064-A

C. Preparation for Installation
(1) Clean the component interface and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Do a visual inspection of the fuel pipes to make sure that there is no blockage.

NOTE: The damage limits for the fuel pipes and the fuel line shrouds are given in the Fuel-Pipe Repair Manual (Ref. FPRM Check) and (Ref. FPRM Description).

Subtask 28-20-00-420-058-A

D. Installation of the Fuel-Feed Pipe Seals at the Front Spar (RIB8)

Fuel-Feed Pipe Seals - Location and Detail

(1) Remove the PLUG-BLANKING from each disconnected line end.
(2) Install the pipe assembly (7) as follows:
(a) Lubricate the new AIPC 28-21-05-25-070 ORING (9), AIPC 28-21-05-25-070 ORING (16), AIPC 28-21-05-25-080 ORING (15) and AIPC 28-21-05-25-160 ORING (6) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
(b) Install the new O-ring (9) in position on the LP shut-off valve (1).
(c) Install the retaining rings (11) and (13) in position on the connector (12).
(d) Install the nuts (10) and (14) on the connector (12) and make sure that you do not fully tighten the nuts (10) and (14) at this time.
(e) Connect the connector (12) to the LP shut-off valve (1).
(f) Install the new O-rings (15), (16) and (6) in position on the pipe assembly (7).
(g) Install the pipe assembly (7) in position on the LP shut-off valve (1).
(h) Hand tighten the nuts (10) and (14).

(i) Safety the nuts (10) and (14) and the connector (12) with a 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(j) If removed, install the LP fuel-valve actuator (3) on the LP shut-off valve (1) (Ref. AMM TASK 28-24-51-400-001).
(k) Lubricate the new AIPC 28-21-05-25-140 ORING (25) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
(l) Install the new O-ring (25) in position on the sleeve (26).
(m) Put the sleeves (24) and (26) in position.
(n) Install the bolts (4) and the nuts (5).
(o) Put the tab washer (17) in position and install the washers (27) and (18), the bolt (28) and the nut (19).
(p) TORQUE the nuts (5) and (19) to between 0.40 and 0.30 m.daN (35.40 and 26.55 lbf.in )

.
(q) Install the bonding straps (2) and (21) as follows:
1 Put one end of the bonding strap (21) in position on the tab washer (17).
2 Install the bolt (23) and the nut (22).
3 TORQUE the nut (22) to between 3.22 and 2.69 m.daN (23.75 and 19.84 lbf.ft )

.
4 Cut and discard the TIE WRAP(S) from the bonding strap (2).
5 Put the bonding strap (2) and the other end of the bonding strap (21) in position on the pipe assembly (7).
6 Install the bolt (20) and the nut (8) .
7 TORQUE the nut (8) to between 3.22 and 2.69 m.daN (23.75 and 19.84 lbf.ft )

.
(3) Install the pipe assembly (32) as follows:
(a) Lubricate the new AIPC 28-21-05-25-240 ORING (30), AIPC 28-21-05-25-230 ORING (31), AIPC 28-21-06-01-100 ORING (44), AIPC 28-21-06-01-070 ORING (43) and AIPC 28-21-06-01-070 ORING (50) with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
(b) Install the new O-rings (30) and (31) on the pipe assembly (32).
(c) Install pipe assembly (32) in position on the aircraft structure.
(d) Connect the pipe assembly (32) to the sleeve (26).
(e) Install the bolts (29).
(f) Install the tab washer (39), the washers (38) and (40) and the bolt (37).
(g) TORQUE the bolts (37) and (29) to between 0.80 and 0.70 m.daN (70.80 and 61.95 lbf.in )

.
(h) Install the new O-ring (50) on the pipe assembly (52).
(i) Install the new O-rings (43) and (44) on the pipe assembly (32).
(j) Install the sleeve (47) on the pipe assembly (52).
(k) Move the sleeve (47) a short distance down the pipe assembly (52) to correctly install the O-ring (50).
(l) Install the clamps (45) with the bolts (54) and the nuts (46).
(m) TORQUE the nut (46) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )

.
(n) Install the nut (48) and the new AIPC 28-21-06-01-110 RING (49) on the pipe connector (53):

Make sure the distance "A" between the ends of the pipes is 5 -3 MM or +3 MM (0.1969 -0.1181 IN. or +0.1181 IN.).

1 Measure the distance of the pipe assembly (52) movement as follows:
a Move pipe assembly (52) in one direction, until it touches the shoulder inside the related connector.
b Move pipe assembly (52) fully in the opposite direction, until it touches the shoulder inside the opposite side related connector.
c The total movement must be between 4 mm (0.1575 in.) and 16 MM (0.6299 IN.).
d Set pipe assembly in the middle position between the two related connectors.
(o) Hand tighten the nut (48).

(p) Safety the nut (48) and (51) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(q) Put one end of the bonding strap (34) in position on the tab washer (39).
(r) Put the other end of the bonding strap (34) in position on the pipe assembly (32).
(s) Put the bonding strap (42) in position on the pipe assembly (32).
(t) Install the bolts (36) and (41) and the nuts (35) and (33).
(u) TORQUE the nuts (35) and (33) to between 3.22 and 2.69 m.daN (23.75 and 19.84 lbf.ft )

.
(4) Do a check of the electrical bonding (Ref. AMM TASK 20-28-00-912-802).

Subtask 28-20-00-865-071-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
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

Subtask 28-20-00-210-056-A ** ON A/C NOT FOR ALL

F. Visual Check
(1) Do a wet motoring check to make sure that there are no leaks (Ref. AMM TASK 71-00-00-710-002).
(2) Do a visual inspection of the fuel feed pipe to make sure that there are no leaks (Ref. AMM TASK 28-21-00-790-002).

Subtask 28-20-00-210-056-B ** ON A/C NOT FOR ALL

F. Visual Check
(1) Do a dry motor check to make sure that there are no leaks (Ref. AMM TASK 71-00-00-710-045).
(2) Do a visual inspection of the fuel feed pipe to make sure that there are no leaks (Ref. AMM TASK 28-21-00-790-002).

Subtask 28-20-00-210-056-D ** ON A/C NOT FOR ALL

F. Visual Check
(1) Do a engine motor leak-check to make sure that there are no leaks (Ref. AMM TASK 71-00-00-720-814).
(2) Do a visual inspection of the fuel feed pipe to make sure that there are no leaks (Ref. AMM TASK 28-21-00-790-002).

5. Close-up
Subtask 28-20-00-410-073-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Retract the slats (Ref. AMM TASK 27-80-00-866-005).
(2) FOR [1000EM1] (ENGINE-1)
(a) Install access panels 471AL, 472AR, 413DL and 413ET (Ref. AMM TASK 54-53-11-400-804).
(3) FOR [1000EM2] (ENGINE-2)
(a) Install access panels 481AL, 482AR, 424DR and 423ET (Ref. AMM TASK 54-53-11-400-804).

Subtask 28-20-00-410-073-C ** ON A/C NOT FOR ALL

A. Close Access
(1) Retract the slats (Ref. AMM TASK 27-80-00-866-005).
(2) FOR [1000EM1] (ENGINE-1)
(a) Install access panels 471AL, 472AR, 471BL, 472BR and 414FR (Ref. AMM TASK 54-53-11-400-002).
(3) FOR [1000EM2] (ENGINE-2)
(a) Install access panels 481AL, 482AR, 481BL, 482BR and 423FL (Ref. AMM TASK 54-53-11-400-002).

Subtask 28-20-00-410-073-F ** ON A/C NOT FOR ALL

A. Close Access
(1) Retract the slats (Ref. AMM TASK 27-80-00-866-005).
(2) FOR [1000EM1] (ENGINE-1)
(a) Install access panels 471AL, 471AR, 471BL, 471BR, 471CL and 471CR (Ref. AMM TASK 54-53-11-400-002).
(3) FOR [1000EM2] (ENGINE-2)
(a) Install access panels 481AL, 481AR, 481BL, 481BR, 481CL and 481CR (Ref. AMM TASK 54-53-11-400-002).

Subtask 28-20-00-440-051-A ** ON A/C NOT FOR ALL

B. Reactivation of the Thrust Reverser (T/R)
(1) Do the reactivation procedure of the thrust reverser (Ref. AMM TASK 78-30-00-440-805).

Subtask 28-20-00-440-051-C ** ON A/C NOT FOR ALL

B. Make the Thrust Reverser (T/R) Serviceable for Maintenance
(1) Make the thrust reverser serviceable for maintenance (Ref. AMM TASK 78-30-00-081-041).

Subtask 28-20-00-440-051-D ** ON A/C NOT FOR ALL

B. Reactivation of the Thrust Reverser (T/R)
(1) Do the reactivation procedure of the thrust reverser (Ref. AMM TASK 78-30-00-440-012).

Subtask 28-20-00-440-051-F ** ON A/C NOT FOR ALL

B. Make the Thrust Reverser (T/R) Serviceable after Maintenance
(Ref. AMM TASK 78-30-00-081-041).

Subtask 28-20-00-860-071-A

C. Aircraft Maintenance Configuration
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(4) Remove the access platform(s).
(5) Remove the SAFETY BARRIERS.
(6) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.02 06:17:20 UTC