Removal of the Fuel Pipes

TASK 28-00-00-000-001-A
Removal 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 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.

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

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 procedure.

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

REFERENCE	QTY	DESIGNATION
No specific	2	CONTAINER 20L (5 USGAL)
No specific	AR	SAFETY BARRIER(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(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
148AZ, 151KC, 241EF, 241JF, 251KG

D. Referenced Information

REFERENCE	DESIGNATION
TASK 25-28-41-000-001-A	Removal of the Textile Floor Covering
TASK 25-55-11-000-001-A	Removal 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 28-11-27-000-001-A	Removal of the Additional Center Tank (ACT)
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 28-25-00-869-001-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 57-27-11-000-001-A	Removal of the Access Panel
TASK 57-27-11-000-002-A	Removal of the Access Panel
TASK 57-31-21-000-001-A	Removal 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 28-00-00-910-050-A ** ON A/C NOT FOR ALL

A. Fuel Pipes

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).

This topic gives the general procedure for the removal and installation of the fuel pipes in the fuel system. It includes the pipes for these systems:

refuel/defuel
engine feed
vent
recirculation.

In general, it is not necessary to wirelock the fuel couplings inside the fuel tanks. The fuel couplings are self-locking.

Refer to the removal/installation topic of the related component(s) for the data on a fuel pipe joint at a component interface. It is possible that you must remove a component before you can remove the applicable fuel pipe.
(1) Sliding Joints

Some fuel pipes are connected together with sliding joints which have O-ring seals. If a retaining ring becomes loose, the fuel pipes cannot become disconnected. You have to compress more than two of the sliding joints to get the necessary clearance to disconnect these fuel pipes.
(2) Long Fuel Pipes

The long fuel pipes between RIB15 and RIB21 are removed as follows:

remove the wingtip (Ref. AMM TASK 57-31-21-000-001)
remove the long pipes through RIB27.

Subtask 28-00-00-910-050-B ** ON A/C NOT FOR ALL

A. Fuel Pipes

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).

This topic gives the general procedure for the removal and installation of the fuel pipes in the fuel system. It includes the pipes for these systems:

refuel/defuel
engine feed
vent
recirculation.

Subtask 28-00-00-941-050-A

B. 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.

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

(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) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.

Subtask 28-00-00-860-050-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Defuel or transfer fuel from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-001) (Ref. AMM TASK 28-25-00-869-001).
(2) If necessary, drain the remaining fuel from the applicable fuel tank(s) (Ref. AMM TASK 28-25-00-650-003).

Subtask 28-00-00-860-050-B ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Defuel the applicable fuel tank (Ref. AMM TASK 28-25-00-650-001).
(2) Drain the remaining fuel from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003) and (Ref. AMM TASK 28-25-00-650-005).

Subtask 28-00-00-010-050-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Get access to the applicable fuel tank or work area (Ref. AMM TASK 28-10-00-910-002):
(a) For the LH and RH wing (Ref. AMM TASK 57-27-11-000-001), (Ref. AMM TASK 57-27-11-000-002).
(b) If applicable, remove the wing-tip (Ref. AMM TASK 57-31-21-000-001).
(2) For access at FR42, remove the access cover 147AZ/148AZ (Ref. AMM TASK 57-17-11-000-001) and (Ref. AMM TASK 28-10-00-910-002).

Subtask 28-00-00-010-050-D ** ON A/C NOT FOR ALL

D. Get Access
(1) Get access to the applicable fuel tank or work area (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).
(2) For access at FR42, remove the access cover 147AZ/148AZ (Ref. AMM TASK 57-17-11-000-001) and (Ref. AMM TASK 28-10-00-910-002).

Subtask 28-00-00-010-050-E ** ON A/C NOT FOR ALL

D. Get Access
(1) Get access to the applicable fuel tank or work area (Ref. AMM TASK 28-10-00-910-002):
(a) For LH and RH wing (Ref. AMM TASK 57-27-11-000-001) and (Ref. AMM TASK 57-27-11-000-002).
(2) For access at FR42, remove access cover 148AZ and/or the ACT-Equipment Support Door (Ref. AMM TASK 57-17-11-000-001) and (Ref. AMM TASK 28-10-00-910-002)..
(3) For access to the fuel/vent pipes from FR36 to FR47:
(a) Remove sufficient carpet from the passenger compartment floor to get access to applicable access panels 241EF or 241JF (Ref. AMM TASK 25-28-41-000-001).
(b) Remove applicable access panels 241EF and 241JF.
(c) Remove access panel 151KC from the ceiling of the aft cargo compartment.

Subtask 28-00-00-010-059-A ** ON A/C NOT FOR ALL

E. Get Access (If ACT1 is Installed)

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

(1) For access to the fuel/vent pipes:
(a) Remove sufficient carpet from the passenger compartment floor to get access to applicable access panels 241JF or 251KG (Ref. AMM TASK 25-28-41-000-001).
(b) Remove applicable access panels 241JF and 251KG.
(c) Remove access panel 151KC from the ceiling of the aft cargo compartment.

Subtask 28-00-00-010-059-B ** ON A/C NOT FOR ALL

E. Get Access (If ACT1 and ACT2 is Installed)

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

(1) For access to ACT1 fuel/vent pipes:
(a) Remove sufficient carpet from the passenger compartment floor to get access to applicable access panels 241JF or 251KG (Ref. AMM TASK 25-28-41-000-001).
(b) Remove applicable access panels 241JF and 251KG.
(c) Remove access panel 151KC from the ceiling of the aft cargo compartment.
(2) For access to ACT2 fuel/vent pipes:
(a) Remove sufficient carpet from the passenger compartment floor to get access to access panel 251PG in access panel 251AG (Ref. AMM TASK 25-28-41-000-001).
(b) Remove access panel 251PG.
(c) Remove access panel 151RC from the ceiling of the aft cargo compartment.

4. Procedure
Subtask 28-00-00-020-050-A

CAUTION: WHEN YOU REMOVE THE BOLTS, MAKE SURE THAT YOU RECORD THE CORRECT POSITION OF EACH OF THEM. THE CONNECTOR CAN HAVE RIB/ SPLIT-PIPE-ADAPTER ATTACHMENT FASTENERS OF DIFFERENT GRIP LENGTHS.

A. Removal of the Fuel Pipes

Fuel Pipes

(1) For joint types (detail A):
(a) Remove the nut (7), the screw (5) and the bonding strap (6).
(b) Remove the nuts (3) and the bolts (4).
(c) Compress the sliding joints to move the end connectors (1) apart.
(d) Remove and discard the O-ring (2).
(2) For joint types (detail B):
(a) Remove the nut (13), the screw (12) and the bonding strap (11).
(b) Remove the nuts (8) and the bolts (10) from the rib connectors (9) (one at each end of the fuel pipe).
(c) Remove the pipe and the rib connectors (9) together.
(d) Remove the rib connectors (9) and the O-rings (14) from the pipe.
(e) Discard the O-rings (14).
(3) For joint types (detail C):
(a) Remove the nut (23), the screw (22) and the bonding strap (21).
(b) Remove the retaining nuts (15) and (24).
(c) Compress the sliding joint for removal.
(d) Remove and discard the O-ring (26).
(e) If it is necessary to remove the rib connectors (25) and (19), then remove the nuts (18) and the bolts (20).
(f) Remove the rib connectors (25) and (19).
(4) For joint types (detail E):
(a) Remove the bonding strap (27) with the bolt (28) and the nut (29).
(b) Remove the retaining nuts (31).
(c) Remove and discard the O-rings (33).
(d) Keep the connector (32) with the fuel pipe.
(5) To remove the fairleads (detail F):
(a) Remove the nut (40), the screw (38) and the bonding strap (39).
(b) Remove the nuts (34), the bolts (41) and the washers (42).
(c) Remove the nuts (36) and the bolts (35).
(d) Remove the two halves of the fairlead (37).
(6) For joint types (detail G):
(a) Remove the nut (48), the screw (47) and the bonding strap (46).
(b) Release the retaining nuts (44).
(c) Compress the sliding joints for removal.
(d) Remove and discard the O-rings (49).
(e) If it is necessary to remove the rib connector (45), then remove the nuts (51) and the bolts (50).
(f) Remove the rib connector (45) through the rib.

Subtask 28-00-00-020-052-A ** ON A/C NOT FOR ALL

CAUTION: WHEN YOU REMOVE THE BOLTS, MAKE SURE THAT YOU RECORD THE CORRECT POSITION OF EACH OF THEM. THE CONNECTOR CAN HAVE RIB/ SPLIT-PIPE-ADAPTER ATTACHMENT FASTENERS OF DIFFERENT GRIP LENGTHS.

B. Removal of the Fuel Pipes (ACT Provisioned)

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

(1) Put the CONTAINER 20L (5 USGAL) below the flange of the applicable fuel/vent pipe to catch fuel that can spill.
(2) To remove the applicable fuel/vent pipe(s) between FR36 and FR46, do the steps that follow:
(a) For detail A joint types:
1 Remove the nut (1), the washers (2), the bolt (5) and disconnect the bonding strap (4) from the clamp (22).
2 Move the clamp (22) away from the joint.

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.

3 Remove and discard the lockwire and remove the retaining clip (6).
4 Remove the nut (16), the washers (15) and the bolt (14).
5 Remove the nuts (13) and the bolts (12).
6 Carefully move the tube (19) away from the flange (17) to get access to the bonding strap (9) and the inner pipe joint.
7 Remove the bolt (10), the washer (11) and disconnect the bonding strap (9).
8 Loosen the collar (8) and remove it with the securing ring (20), the outer pipe (3) and the inner pipe.
9 Remove and discard the O-rings (7), (18) and (21).
(b) For detail B joint types:
1 Remove the nut (33), the washers (34), the bolt (35) and disconnect the bonding strap (32) from the clamp (30).
2 Move the clamp (30) along the pipe (31) away from the joint.
3 Remove and discard the lockwire and remove the retaining clip (36).
4 Remove the nuts (49), the washers (50) and the bolts (51).
5 Remove the nuts (44) and the bolts (41).
6 Move the tube (38) away from the flange (56).
7 Remove the outer pipe (31), the tube (38), the clamp (30) and the bonding strap (32).
8 Loosen the collar (39) and move it with the securing ring (57) along the inner pipe.
9 Remove the nuts (46), the four washers (43) and the bolts (42) and disconnect the bonding strap (45).
10 Move the outer pipe (47) away from the flange (56).
11 Remove the nut (53), the washer (52) and disconnect the bonding strap (54).
12 Remove the collar (39), the securing ring (57) and the inner pipe.
13 Remove all remaining items from the last joint.
14 Remove and discard the O-rings (37), (40) and (55).

NOTE: You can remove the subsequent joint forward to remove the pipe (47), clamp (48), bonding strap (45) and inner pipe.

(c) For detail C joint types:
1 Remove the nut (100), the washers (101), the bolt (103) and disconnect the bonding strap (102) from the clamp (104).
2 Move the clamp (104) along the pipe (99) away from the joint.
3 Remove and discard the lockwire and remove the retaining clip (98).
4 Remove the nuts (89) and the bolts (93).
5 Remove the nuts (85), the washers (84) and the bolts (94).
6 Remove the tube (110) from the flange (90).
7 Move the tube (110) along the pipe (99) away from the joint.
8 Remove the nut (107), the washer (106) and disconnect one end of the bonding strap (105).
9 Loosen the collar (96) and the securing ring (114) and move them forwards along the inner pipe.
10 Remove the nuts (87), washers (86), washers (91) and bolts (92).
11 Move the outer pipe (88) aft and remove it.
12 Remove the inner pipe from the outer pipe (88).
13 Remove the collar (96) and its securing ring (114).
14 Remove the sleeve (95) and its securing ring (113).
15 Remove and discard the O-rings (97), (108), (109), (111) and (112).

NOTE: You can remove the subsequent joint forward to remove the pipe (99), inner pipe, clamp (104) and tube (110).

(d) For detail E joint types:
1 Remove the nut (141), the washers (142), the bolt (144) and disconnect the bonding strap (143) from the clamp (140).
2 Remove the nuts (138), the washers (134), the bolts (133) and disconnect the bonding straps (153) and (154).
3 Remove and discard the lockwire and remove the retaining clip (129).
4 Remove the nuts (135) and the bolts (132).
5 Pull the tube (126) away from the flange.
6 Remove the nut (123), the washer (124) and disconnect the bonding strap (125).
7 Loosen the collar (130) and remove it together with:

The securing ring, fwd inner pipe, tube (126) and outer pipe (127).

8 Remove and discard the O-rings (128), (131) and (152).
9 Remove and discard the lockwire and remove the retaining clip (139).
10 Move the clamp (140) and the tube (137) along the pipe (145) away from the joint.
11 Remove the nut (146), the washer (147) and disconnect the bonding strap (125).
12 Loosen the collar (149) and move the aft inner pipe away from the double flange (150).
13 Remove the collar (149) and the securing ring.
14 Remove the double flange (150).
15 Remove and discard the O-rings (136), (148) and (151).

NOTE: You can remove the subsequent joint forward to remove the pipe (145), the clamp (140) and the aft inner pipe.

Subtask 28-00-00-020-058-A ** ON A/C NOT FOR ALL

CAUTION: WHEN YOU REMOVE THE BOLTS, MAKE SURE THAT YOU RECORD THE CORRECT POSITION OF EACH OF THEM. THE CONNECTOR CAN HAVE RIB/ SPLIT-PIPE-ADAPTER ATTACHMENT FASTENERS OF DIFFERENT GRIP LENGTHS.

C. Removal of the Fuel Pipes (ACT1 Installed)

NOTE: You can access to the fuel/vent pipes is through the passenger compartment floor and the AFT cargo-compartment ceiling-panel.

(1) Put the CONTAINER 20L (5 USGAL) below the flange of the applicable fuel/vent pipe to catch fuel that can spill.
(2) To get access to the applicable fuel/vent pipe (1), do the steps that follow:

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

NOTE: We recommend you that not to remove the nuts at the top and bottom center positions on the ACT flanges.

(a) Remove the nuts (12) from the studs in the ACT flanges.
(b) Let the fuel drain into the 98D28108328000 CONTAINER - REST FUEL, ACT.
(c) Use a Textile-Lint free Cotton - (Material No.14SBA1) to remove remaining fuel.
(d) Remove ACT for access (Ref. AMM TASK 28-11-27-000-001).
(e) Remove and discard the O-rings (13) and (14).
(f) From the passenger compartment, get access to the bellows (2) and loosen the clamps (3) on the fuel and vent pipe flanges.
(g) In the AFT cargo compartment, loosen partition panel 151AW (Ref. AMM TASK 25-55-11-000-001).
(h) With the bellows (2) attached, move partition panel 151AW rearward and away from the flexible pipes (1).
(i) Remove the nuts (8), the bolts (7) and the washers (6).
(j) Remove the nuts (9) and the bolts (5).
(k) Remove the applicable fuel/vent pipe (1).
(l) Remove and discard the O-rings (10) and (11).
(3) To remove the fuel/vent pipe (4), do the steps that follow:

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

(a) Remove the bolts (20) and the washers (21) from the clamp (22) of the applicable pipe.
(b) Remove the nut (41), the washers (39) and the bolt (38) to disconnect the bonding strap (40).
(c) Remove the coupling nut (43) and the retaining ring (44) from the tube (35).
(d) Remove the pipe (4) and the clamp (42) from the tube (35).
(e) Remove and discard the O-ring (37).
(f) Remove the nuts (45) and the bolts (30) from the top position on the flange (46).
(g) Remove the bolts (34) and the washers (33).
(h) Remove the tube (35) and the inner pipe (36).
(i) Remove and discard the O-rings (31) and (32).

Subtask 28-00-00-020-058-B ** ON A/C NOT FOR ALL

CAUTION: WHEN YOU REMOVE THE BOLTS, MAKE SURE THAT YOU RECORD THE CORRECT POSITION OF EACH OF THEM. THE CONNECTOR CAN HAVE RIB/ SPLIT-PIPE-ADAPTER ATTACHMENT FASTENERS OF DIFFERENT GRIP LENGTHS.

C. Removal of the Fuel Pipes (ACT1 and ACT2 Installed)

NOTE: You can access to the fuel/vent pipes is through the passenger compartment floor and the AFT cargo-compartment ceiling-panel.

(1) Put the CONTAINER 20L (5 USGAL) below the flange of the applicable fuel/vent pipe to catch fuel that can spill.
(2) To remove the applicable ACT2 flexible fuel/vent pipe (50) at FR47/5, do the steps that follow:

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

NOTE: We recommend you that not to remove the nuts at the top and bottom center positions on ACT1 or ACT2 flanges.

(a) Remove the nuts (54) from the studs in ACT2 flanges.
(b) Let the fuel drain into the 98D28108328000 CONTAINER - REST FUEL, ACT.
(c) Use a Textile-Lint free Cotton - (Material No.14SBA1) to remove fuel remaining fuel.
(d) Move ACT2 rearward sufficiently to disengage the flexible pipe (50) from the ACT flange studs (Ref. AMM TASK 28-11-27-000-001).
(e) Remove and discard the O-ring seals (55) and (56).
(f) Remove the nuts (53) from the studs on the ACT1 flanges.
(g) Remove the applicable fuel/vent pipe (50).
(h) Remove and discard the O-rings (51) and (52).
(3) To remove the applicable ACT1 fuel/vent pipe (1), do the steps that follow:

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

NOTE: We recommend you that not to remove the nuts at the top and bottom center positions on ACT1 flanges.

(a) Remove the nuts (12) from the studs on ACT1 flanges.
(b) Let the fuel drain into the 98D28108328000 CONTAINER - REST FUEL, ACT.
(c) Use a Textile-Lint free Cotton - (Material No.14SBA1) to remove remaining fuel.
(d) Remove ACT2 and ACT1 for access (Ref. AMM TASK 28-11-27-000-001).
(e) Remove and discard the O-rings (13) and (14).
(f) From the passenger compartment, get access to the bellows (2) and loosen the clamps (3) on the fuel and vent pipe flanges.
(g) In the aft cargo compartment, loosen partition panel 151AW (Ref. AMM TASK 25-55-11-000-001).
(h) With the bellows (2) attached, move partition panel 151AW rearward and away from the flexible pipes (1).
(i) Remove the nuts (8), the bolts (7) and the washers (6).
(j) Remove the nuts (9) and the bolts (5).
(k) Remove the applicable fuel/vent pipe (1).
(l) Remove and discard the O-rings (10) and (11).
(4) To remove the fuel/vent pipe (4), do the steps that follow:
(a) Remove the bolts (20) and the washers (21) from the clamp (22) of the applicable pipe.
(b) Remove the nut (41), the washers (39) and the bolt (38) to disconnect the bonding strap (40).
(c) Remove the coupling nut (43) and the retaining ring (44) from the tube (35).
(d) Remove the pipe (4) and the clamp (42) from the tube (35).
(e) Remove and discard the O-ring (37).
(f) Remove the two nuts (45) and the two bolts (30) from the top position on the flange (46).
(g) Remove the four bolts (34) and the four washers (33).
(h) Remove the tube (35) and the inner pipe (36).
(i) Remove and discard the O-rings (31) and (32).

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