Installation of the Fuel Manifold Gasket Seals [CFMB]

TASK 73-11-31-400-041-A
Installation of the Fuel Manifold Gasket Seals

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

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 1M(3 FT)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 110 and 100 lbf.in (1.24 and 1.13 m.daN )
No specific	Torque wrench: range to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
110	GASKET SEAL	AIPC 73-11-31-01-040
90	GASKET SEAL	AIPC 73-11-31-01-040
45	GASKET SEAL	AIPC 73-11-31-01-070

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-710-006-B	Minimum Idle Check
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
Fuel Manifold Gasket Seals

3. Job Set-up
Subtask 73-11-31-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

Subtask 73-11-31-010-055-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open (Ref. AMM TASK 78-36-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 73-11-31-040-053-A ** ON A/C NOT FOR ALL

C. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).

4. Procedure
Subtask 73-11-31-420-051-A ** ON A/C NOT FOR ALL

A. Installation of the Fuel Manifold Gasket Seals
(1) Put AIPC 73-11-31-01-070 GASKET SEAL (45) between the fuel manifold (220) and the flanges of the LPTCC fuel manifold (62) and put a AIPC 73-11-31-01-070 GASKET SEAL (45) between the fuel manifold (220) and the flange of the RACC fuel manifold (65).
(2) Attach with 4 bolts (40) and nuts (35) handtight.
(3) Put AIPC 73-11-31-01-040 GASKET SEAL (90) between the fuel manifold (220) and the flange of PCR fuel manifold (130). Put AIPC 73-11-31-01-040 GASKET SEAL (110) between the fuel manifold and the flange of TCC fuel manifold (105).
(4) Attach with 4 bolts (85) and nuts (80) handtight.
(5) TORQUE nuts (35 and 80) to between 110 and 100 lbf.in (1.24 and 1.13 m.daN )

.
(6) Install tube cap assembly (70 and 135) on drain tube (75 and 140). TORQUE to between 145 and 135 lbf.in (1.64 and 1.53 m.daN )

Subtask 73-11-31-410-052-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) Close the thrust reverser doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 73-11-31-440-051-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 73-11-31-710-051-A ** ON A/C NOT FOR ALL

D. Do a minimum idle check (Ref. AMM TASK 71-00-00-710-006).

5. Close-up
Subtask 73-11-31-410-053-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:57:53 UTC