Installation of the Fuel Pipes

TASK 28-00-00-400-001-A
Installation of the Fuel Pipes

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

WARNING: MAKE SURE THE AREA AROUND THE AIRCRAFT IS SAFE BEFORE YOU START THE REFUEL/DEFUEL PROCEDURE. IN THE SAFETY AREA, DO NOT:

SMOKE
MAKE SPARKS OR FIRE
USE ANY EQUIPMENT WHICH IS NOT APPROVED FOR REFUEL/DEFUEL PROCEDURES.

AIRCRAFT FUEL IS FLAMMABLE.

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

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: DO NOT GET YOUR CLOTHES SOAKED WITH FUEL.

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.

CAUTION: DO NOT REFUEL OR DEFUEL THROUGH THE TWO REFUEL/DEFUEL COUPLINGS AT THE SAME TIME. THIS IS TO PREVENT PRESSURE DIFFERENCE PROBLEMS.

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

ZONE: 140
ZONE: 150
ZONE: 211
ZONE: 241
ZONE: 251
ZONE: 500
ZONE: 600

1. Reason for the Job

NOTE: Two persons are necessary for this task.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	Torque wrench: range to between 0.5 and 0.4 m.daN (44.25 and 35.40 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.06AAC1)	Polysulfide Sealant-General Purpose Interfay -
(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
140	CENTER WING
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
211	COCKPIT
241	CENTER PASSENGER COMPARTMENT
251	AFT PASSENGER COMPARTMENT
500	LEFT WING
600	RIGHT WING
251KG
148AZ, 151AW, 241EF
151KC, 241JF

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
11	O-RING	AIPC 28-11-04-02-120
13	O-RING	AIPC 28-11-04-02-120
31	O-RING	AIPC 28-11-04-02-120
10	O-RING	AIPC 28-11-04-02-130
14	O-RING	AIPC 28-11-04-02-130
32	O-RING	AIPC 28-11-04-02-130
37	O-RING	AIPC 28-11-04-02-230
11	O-RING	AIPC 28-11-84-02-120
14	O-RING	AIPC 28-11-84-02-120
31	O-RING	AIPC 28-11-84-02-120
10	O-RING	AIPC 28-11-84-02-130
13	O-RING	AIPC 28-11-84-02-130
32	O-RING	AIPC 28-11-84-02-130
37	O-RING	AIPC 28-11-84-02-230
52	O-RING	AIPC 28-11-84-17-020
55	O-RING	AIPC 28-11-84-17-020
51	O-RING	AIPC 28-11-84-17-140
56	O-RING	AIPC 28-11-84-17-140
131	O-RING	AIPC 28-12-84-02-250
148	O-RING	AIPC 28-12-84-02-250
128	O-RING	AIPC 28-12-84-02-260
136	O-RING	AIPC 28-12-84-02-260
151	O-RING	AIPC 28-12-84-02-260
152	O-RINGS	AIPC 28-12-84-02-270
109	O-RING	AIPC 28-25-84-03-100
112	O-RING	AIPC 28-25-84-03-270
111	O-RING	AIPC 28-25-84-03-280
97	O-RING	AIPC 28-25-84-03-360
108	O-RING	AIPC 28-25-84-03-410
37	O-RING	AIPC 28-25-84-04-080
55	O-RINGS	AIPC 28-25-84-04-140
40	O-RING	AIPC 28-25-84-04-180
18	O-RING	AIPC 28-25-84-05-170
21	O-RING	AIPC 28-25-84-05-200
7	O-RING	AIPC 28-25-84-05-240

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 25-28-41-400-001-A	Installation of the Textile Floor Covering
TASK 25-55-11-400-001-A	Installation of the Aft Cargo-Compartment Partition at FR47
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 28-11-27-400-001-A	Installation of the Additional Center Tank (ACT)
TASK 28-12-00-730-801-A	Pressure Test of the Wing-Tank Vent System
TASK 28-12-00-730-802-A	Pressure Test of the Center-Tank Vent System
TASK 28-16-00-790-001-A	Leak Test of the Fuel Recirculation Cooling-System
TASK 28-21-00-710-006-A	Operational Test of the Fuel Flow through the Fuel Pumps with Gravity Feed
TASK 28-21-00-710-007-A	Operational Test of the Main Fuel-Pump System with Fuel Flow by Transfer
TASK 28-21-00-790-001-A	Leak Test of the Main Fuel-Pump-System Pipelines
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 28-25-00-650-005-A	To Drain the Remaining Fuel from the Additional Center Tank (ACT)
TASK 28-25-00-710-002-A	Operational Test of the Defuel System
TASK 28-25-00-710-003-A	Operational Test of the Refuel System
TASK 28-25-00-790-801-A	Leak Test of the Refuel System
TASK 28-25-00-869-001-A	Fuel Transfer
TASK 57-17-11-000-001-A	Removal of Access Cover 147AZ(148AZ)
TASK 57-17-11-000-001-B	Removal of Access Cover 148AZ or/and the ACT-Equipment Support Door
TASK 57-17-11-400-001-A	Installation of Access Cover 147AZ(148AZ)
TASK 57-17-11-400-001-B	Installation of Access Cover 148AZ or/and the ACT-Equipment Support-Door
TASK 57-27-11-000-001-A	Removal of the Access Panel
TASK 57-27-11-000-002-A	Removal of the Access Panel
TASK 57-27-11-400-001-A	Installation of the Access Panel
TASK 57-27-11-400-002-A	Installation of the Access Panel
TASK 57-31-21-000-001-A	Removal of the Wing-Tip Structure
TASK 57-31-21-400-001-A	Installation of the Wing-Tip Structure
Fuel Pipes
Fuel/Vent Pipes - ACT1 Installed ** ON A/C NOT FOR ALL
Fuel/Vent Pipes - ACT Provision ** ON A/C NOT FOR ALL
Fuel/Vent Pipes - ACT2 Installed ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-00-00-941-055-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 a fuel tank (Ref. AMM TASK 28-10-00-910-001).
(2) Make sure that the SAFETY BARRIER(S) are in position.

Subtask 28-00-00-860-052-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is below the applicable access panel.
(2) Make sure that the applicable fuel tank is defueled (Ref. AMM TASK 28-25-00-650-001).
(3) Make sure that the remaining fuel has been drained from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).
(4) Get access to the applicable fuel tanks and work areas (Ref. AMM TASK 28-10-00-910-002).
(a) For the LH and RH wing (Ref. AMM TASK 57-27-11-000-001) and (Ref. AMM TASK 57-27-11-000-002).
(b) If applicable, make sure that the wing tip has been removed (Ref. AMM TASK 57-31-21-000-001).
(c) For access at FR42, make sure that the access covers 147AZ(148AZ) have been removed (Ref. AMM TASK 57-17-11-000-001).

Subtask 28-00-00-860-052-D ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration

Fuel Pipes ** ON A/C NOT FOR ALL

(1) Make sure that the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is below the applicable access panel.
(2) Make sure that the applicable fuel tank is defueled (Ref. AMM TASK 28-25-00-650-001).
(3) Make sure that the remaining fuel has been drained from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).
(4) Get access to the applicable fuel tanks and work areas (Ref. AMM TASK 28-10-00-910-002).
(a) For LH and RH wing (Ref. AMM TASK 57-27-11-000-001), (Ref. AMM TASK 57-27-11-000-002).
(b) For access at FR42, make sure that access covers 147AZ (148AZ) have been removed (Ref. AMM TASK 57-17-11-000-001).

Subtask 28-00-00-860-052-E ** ON A/C NOT FOR ALL

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 5M (16 FT)- ADJUSTABLE is below the applicable access panel.
(4) Get access to the applicable fuel tanks and work areas (Ref. AMM TASK 28-10-00-910-002):
(a) For access at FR42, make sure that access cover 148AZ and the ACT-equipment support door has been removed (Ref. AMM TASK 57-17-11-000-001).
(b) For access at FR36 to FR47, make sure that applicable access panels 241EF, 241JF and 151KC have been removed.

Subtask 28-00-00-860-060-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration (If the ACT1 is Installed)

Fuel/Vent Pipes - ACT1 Installed ** ON A/C NOT FOR ALL

(1) Make sure that the remaining fuel has been drained from the ACT (Ref. AMM TASK 28-25-00-650-005).
(2) Make sure that access panels 241JF, 151KC and 251KG have been removed.

Subtask 28-00-00-860-060-B ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration (If the ACT1 and ACT2 is Installed)

Fuel/Vent Pipes - ACT1 Installed ** ON A/C NOT FOR ALL

(1) Make sure that the remaining fuel has been drained from the applicable ACT(s) (Ref. AMM TASK 28-25-00-650-005).
(2) For access to ACT1 fuel/vent pipes:

Make sure that access panels 241JF, 151KC and 251KG have been removed.

(3) For access to ACT2 fuel/vent pipes:

Make sure that access panels 251PG, 151RC have been removed.

4. Procedure
Subtask 28-00-00-560-050-A ** ON A/C NOT FOR ALL

A. 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) Make a visual inspection of the fuel pipes. They must not be blocked.

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

(4) Lubricate the new O-rings with Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) and install them on the applicable fuel pipe in the correct position.
(5) For detail A and B joint types, if the rib fittings are removed:
(a) Apply Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) to the interface of the rib and the fitting.
(6) Put the fuel pipe in the correct position.

Subtask 28-00-00-560-050-B ** ON A/C NOT FOR ALL

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

(4) Lubricate the new O-rings with Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) and install them on the applicable fuel pipe in the correct position.
(5) For detail A and B joint types, if the rib fittings are removed:
(a) Apply Polysulfide Sealant-General Purpose Interfay - (Material No.06AAC1) to the interface of the rib and the fitting.
(6) Put the fuel pipe in the correct position.

Subtask 28-00-00-420-050-A

CAUTION: MAKE SURE THAT YOU INSTALL THE BOLTS IN THEIR CORRECT INSTALLATION POSITIONS. THE BOLTS CAN HAVE DIFFERENT LENGTHS. IF YOU DO NOT INSTALL THEM IN THEIR CORRECT INSTALLATION POSITIONS, DAMAGE TO THE ADJACENT COMPONENTS OR STRUCTURE.

B. Installation of the Fuel Pipes

NOTE: We recommend you that each fastener in the procedure to have a minimum of one thread pitch more than a fully torqued nut. This process confirms there is no fastener shanking.

Fuel Pipes

(1) For joint types (detail A):
(a) Attach the end connectors (1) with the bolts (4) and the nuts (3).
(b) Install the bonding strap (6) with the bolt (5) and the nut (7) (Ref. AMM TASK 20-28-00-912-802).
(2) For joint types (detail B):
(a) Push the pipe into the rib connectors (9) (one at each end).
(b) Install the pipe and the rib connectors (9) and attach them with the bolts (10) and the nuts (8).
(c) Install the bonding strap (11) with the bolt (12) and the nut (13) (Ref. AMM TASK 20-28-00-912-802).
(3) For joint types (detail C):
(a) If it is necessary, install the rib connectors (25) and (19) and attach them with the bolts (20) and the nuts (18).
(b) Make sure that the retaining ring (16) is in the correct position.
(c) Push the pipe (17) into the rib connector (25).
(d) Attach the pipes with the retaining nuts (15) and (24).
(e) Install the bonding strap (21) with the bolt (22) and the nut (23) (Ref. AMM TASK 20-28-00-912-802).
(4) For joint types (detail E):
(a) Make sure that the retaining rings (30) are in their correct position.
(b) Push the pipes into the connector (32) and attach them with the retaining nuts (31).
(c) Install the bonding strap (27) with the bolt (28) and the nut (29) (Ref. AMM TASK 20-28-00-912-802).
(5) To install the fairleads (detail F):
(a) Put the two halves of the fairlead (37) on the pipe and install the bolts (35) and the nuts (36).
(b) Install the bolts (41), the washers (42) and the nuts (34).
(c) Install the bonding strap (39) with the bolt (38) and the nut (40) (Ref. AMM TASK 20-28-00-912-802).
(6) For joint types (detail G):
(a) If it is necessary, install the rib connector (45) and attach it with the bolts (50) and the nuts (51).
(b) Make sure that the retaining ring (43) is in the correct position.
(c) Push the pipe into the rib connector (45) and attach it with the retaining nut (44).
(d) Install the bonding strap (46) with the bolt (47) and the nut (48) (Ref. AMM TASK 20-28-00-912-802).

Subtask 28-00-00-420-051-A ** ON A/C NOT FOR ALL

C. Installation of the Fuel Pipes (Act Provisioned)

NOTE: We recommend you that each fastener in the procedure to have a minimum of one thread pitch more than a fully torqued nut. This process confirms there is no fastener shanking.

(1) To install the applicable fuel/vent pipe(s) between FR36 and FR46, do the steps that follow:

Fuel/Vent Pipes - ACT Provision ** ON A/C NOT FOR ALL

(a) For joint types (detail A):
1 Install the new AIPC 28-25-84-05-240 O-RING (7) on the outer pipe (3). Temporarily install the tube (19) and the clamp (22) on the outer pipe (3).
2 Temporarily install the collar (8) and the securing ring (20) on the forward inner pipe.
3 Install the new AIPC 28-25-84-05-200 O-RING (21) on the forward inner pipe.
4 Push the inner pipes together so that the aft pipe is on the O-ring (21). Install the collar (8) and the securing ring (20).
5 Install the bonding strap (9) with the washer (11) and the bolt (10) (Ref. AMM TASK 20-28-00-912-802).
6 Put the new AIPC 28-25-84-05-170 O-RING (18) in position at the flange (17). Push the tube (19) in position and install the bolt (14), the washers (15) and the nut (16).
7 Install the bolts (12) and the nuts (13).

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.

Subtask 28-00-00-420-058-A ** ON A/C NOT FOR ALL

D. Installation of the Fuel Pipes (If the ACT1 is installed)

NOTE: We recommend you that each fastener in the procedure to have a minimum of one thread pitch more than a fully torqued nut. This process confirms there is no fastener shanking.

Fuel/Vent Pipes - ACT1 Installed ** ON A/C NOT FOR ALL

(1) To install the fuel/vent pipe(s) (4) between FR45 and 47/2, do the steps that follow:
(a) Put the new AIPC 28-11-04-02-130 O-RING (32) on the aft inner pipe (36).
(b) Install the new AIPC 28-11-04-02-230 O-RING (37) and the coupling nut (43) with the retaining ring (44) on the outer pipe (4).
(c) Push the aft inner pipe (36) into the forward inner pipe.
(d) Put the pipe (4) clamp (22) on the bracket and loosely install the bolts (20) and the washers (21).
(e) Put the tube (35) and a new AIPC 28-11-04-02-120 O-RING (31) in position and install the bolts (34) and the washers (33).
(f) Install the bolts (30) and the nuts (45).
(g) Push the pipe (4) into the tube (35).
(h) Tighten the coupling nut (43). Make sure that the dimension Y to the inner flange is 17.00 mm (0.6693 in.) +/- 2.00 mm (0.0787 in.).
(i) Tighten the bolts (20) on the clamp (23).
(j) Tighten the bolts (34) and the nuts (45).
(k) Put the bonding strap (40) in position on the clamp (42). Install the bolt (38), the washers (39) and the nut (41) (Ref. AMM TASK 20-28-00-912-802).
(2) To install the ACT flexible fuel/vent pipe(s) (1), do the steps that follow:
(a) Put the new AIPC 28-11-04-02-130 O-RING (10) and the new AIPC 28-11-04-02-120 O-RING (11) on the flexible fuel/vent pipe (1) flange.
(b) Connect the flexible fuel/vent pipe (1) to the pipe (4) flange. Install the bolts (5), the nuts (9), the bolts (7), the washers (6) and the nuts (8) in the correct location (see detail E).
(c) Install the clamps (3) loosely on the bellows (2). Make sure that it will be possible to access the clamp (3) bolts through access panel 251KG opening.
(d) From the AFT cargo compartment:
1 Position partition panel 151AW above the flexible fuel and vent pipes (1).
2 Move the partition panel forward and put the bellows (2) on the fuel and vent pipe (4) flanges.
3 Install the partition panel 151AW (Ref. AMM TASK 25-55-11-400-001).
(e) From the passenger compartment:
1 Tighten the clamps (3) and make sure that the bellows (2) are correctly installed on the pipe flanges.
(f) Put the new AIPC 28-11-04-02-120 O-RING (13) and the new AIPC 28-11-04-02-130 O-RING (14) on the flexible pipe (1) flange.
(g) Align the holes of the flexible pipe (1) flange with the ACT flange studs.
(h) Install the ACT (Ref. AMM TASK 28-11-27-400-001).
(i) Make sure that the flexible pipe (1) is connected to the ACT flange with the nuts (12).
(j) Make sure that the nuts (12) are torqued to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )

Subtask 28-00-00-420-058-B ** ON A/C NOT FOR ALL

D. Installation of the Fuel Pipes (If the ACT1 and ACT2 are Installed)

NOTE: We recommend you that each fastener in the procedure to have a minimum of one thread pitch more than a fully torqued nut. This process confirms there is no fastener shanking.

Fuel/Vent Pipes - ACT1 Installed ** ON A/C NOT FOR ALL

Fuel/Vent Pipes - ACT2 Installed ** ON A/C NOT FOR ALL

(1) To install the fuel/vent pipe(s) (4) between FR45 and 47/2, do the steps that follow:
(a) Put the new AIPC 28-11-84-02-130 O-RING (32) on the aft inner pipe (36).
(b) Install the new AIPC 28-11-84-02-230 O-RING (37) and the coupling nut (43) with the retaining ring (44) on the outer pipe (4).
(c) Push the aft inner pipe (36) into the forward inner pipe.
(d) Put the pipe (4) clamp (22) on the bracket and loosely install the bolts (20) and the washers (21).
(e) Put the tube (35) and a new AIPC 28-11-84-02-120 O-RING (31) in position and install the bolts (34) and the washers (33).
(f) Install the bolts (30) and the nuts (45).
(g) Push the pipe (4) into the tube (35).
(h) Tighten the coupling nut (43). Make sure that the dimension Y to the inner flange is 17.00 mm (0.6693 in.) +/- 2.00 mm (0.0787 in.).
(i) Tighten the bolts (20) on the clamp (23).
(j) Tighten the bolts (34) and the nuts (45).
(k) Put the bonding strap (40) in position on the clamp (42). Install the bolt (38), the washers (39) and the nut (41) (Ref. AMM TASK 20-28-00-912-802).
(2) To install ACT1 flexible fuel/vent pipe(s) (1), do the steps that follow:
(a) Put the new AIPC 28-11-84-02-130 O-RING (10) and the new AIPC 28-11-84-02-120 O-RING (11) on the flexible fuel/vent pipe (1) flange.
(b) Connect the flexible fuel/vent pipe (1) to the pipe (4) flange. Install the bolts (5), the nuts (9), the bolts (7), the washers (6) and the nuts (8) in the correct location (see detail E).
(c) Install the clamps (3) loosely on the bellows (2). Make sure that it will be possible to access the clamp (3) bolts through the access panel 251KG opening.
(d) From the aft cargo compartment:
1 Position the partition panel 151AW above the flexible fuel and vent pipes (1).
2 Move the partition panel forward and put the bellows (2) on the fuel and vent pipe (4) flanges.
3 Install the partition panel 151AW (Ref. AMM TASK 25-55-11-400-001).
(e) From the passenger compartment:
1 Tighten the clamps (3) and make sure that the bellows (2) are correctly installed on the pipe flanges.
(f) Put the new AIPC 28-11-84-02-130 O-RING (13) and the new AIPC 28-11-84-02-120 O-RING (14) on the flexible pipe (1) flange.
(g) Align the holes of the flexible pipe (1) flange with ACT1 flange studs.
(h) Install ACT1 (Ref. AMM TASK 28-11-27-400-001).
(i) Make sure that the flexible pipe (1) is connected to ACT1 flange with the nuts (12).
(j) Make sure that the nuts (12) are torqued to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )

.
(3) For installation of ACT2 fuel/vent pipes, do the steps that follow:
(a) Put the new AIPC 28-11-84-17-140 O-RING (51) and the new AIPC 28-11-84-17-020 O-RING (52) on the flexible pipe (50) flange.
(b) Align the holes of the flexible pipe (50) flange with ACT1 rear flange studs.
(c) Connect the flexible pipe (50) to ACT1 rear flange with the nuts (53).
(d) TORQUE the nuts (53) to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )

.
(e) Put the new AIPC 28-11-84-17-020 O-RING (55) and the new AIPC 28-11-84-17-140 O-RING (56) on the flexible pipe (50) flange.
(f) Align the holes of the flexible pipe (50) flanges with ACT2 flange studs.
(g) Install ACT2 (Ref. AMM TASK 28-11-27-400-001).
(h) Make sure that the flexible pipe (50) is connected to ACT2 flanges with the nuts (54).
(i) Make sure that the nuts (54) are torqued to between 0.5 and 0.4 m.daN (44.25 and 35.40 lbf.in )

5. Close-up
Subtask 28-00-00-410-051-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) Install the applicable access panels:
(a) For the LH and RH wing (Ref. AMM TASK 57-27-11-400-001) and (Ref. AMM TASK 57-27-11-400-002).
(b) If applicable, install the wing-tip (Ref. AMM TASK 57-31-21-400-001).
(c) For FR42, install the access cover 147AZ(148AZ) (Ref. AMM TASK 57-17-11-400-001).

Subtask 28-00-00-410-051-D ** ON A/C NOT FOR ALL

Subtask 28-00-00-410-051-E ** 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 panels:
(a) For the LH and RH wing (Ref. AMM TASK 57-27-11-400-001) and (Ref. AMM TASK 57-27-11-400-002).
(3) For FR42, install the access cover 148AZ and the ACT-equipment support door (Ref. AMM TASK 57-17-11-400-001).
(4) Install the access panel 151KC in the AFT cargo compartment ceiling.
(5) Install the access panels 241EF and 241JF in the passenger compartment floor.
(6) Put the removed carpet back in position on the passenger compartment floor (Ref. AMM TASK 25-28-41-400-001).

Subtask 28-00-00-410-058-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 151KC in the ceiling of the AFT cargo compartment.
(3) Install the access panels 241JF and 251KG in the passenger compartment floor.
(4) Put the removed carpet back in position on the passenger compartment floor (Ref. AMM TASK 25-28-41-400-001).

Subtask 28-00-00-410-058-B ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) For the ACT1:
(a) Install the access panel 151KC in the ceiling of the AFT cargo compartment.
(b) Install the access panels 241JF and 251KG in the passenger compartment floor.
(3) For the ACT2:
(a) Install the access panel 151RC in the ceiling of the AFT cargo compartment.
(b) Install the access panel 251PG in the passenger compartment floor.
(4) Put the removed carpet back in position on the passenger compartment floor (Ref. AMM TASK 25-28-41-400-001).

Subtask 28-00-00-710-050-A

C. Test
(1) Do an operational test of the related system where applicable:
(a) Operational test of the defuel system (Ref. AMM TASK 28-25-00-710-002).
(b) Operational test of the refuel system (Ref. AMM TASK 28-25-00-710-003).
(c) Operational test of the main fuel-pump system with fuel flow by transfer (Ref. AMM TASK 28-21-00-710-007).
(d) Operational test of the fuel flow through the fuel pumps with gravity feed (Ref. AMM TASK 28-21-00-710-006).
(2) Do a leak test of the related system where applicable:
(a) Leak test of the main fuel-pump-system pipelines (Ref. AMM TASK 28-21-00-790-001).
(b) Leak test of the fuel recirculation cooling-system (Ref. AMM TASK 28-16-00-790-001).
(c) Pressure test of the wing-tank vent system (Ref. AMM TASK 28-12-00-730-801).
(d) Pressure test of the center-tank vent system (Ref. AMM TASK 28-12-00-730-802).
(e) Leak test of the refuel system (Ref. AMM TASK 28-25-00-790-801).

Subtask 28-00-00-650-051-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 28-00-00-942-050-A

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

[Rev.10 from 2021] 2026.04.02 06:16:55 UTC