Removal of the Fuel Manifold Gasket Seals [CFMB]

TASK 73-11-31-000-041-A
Removal 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	CONTAINER 20L (5 USGAL)
No specific	AR	WARNING NOTICE(S)

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. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
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
Fuel Manifold Gasket Seals

3. Job Set-up
Subtask 73-11-31-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 73-11-31-010-053-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.

Subtask 73-11-31-040-052-A ** ON A/C NOT FOR ALL

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

Subtask 73-11-31-010-054-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure
Subtask 73-11-31-020-051-A ** ON A/C NOT FOR ALL

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: USE A CORRECT CONTAINER AND KEEP THE CONTAINER AWAY FROM FLAMES SO THAT FIRES DO NOT OCCUR.

A. Removal of the Fuel Manifold Gasket Seals

NOTE: To make the removal of some of the gasket seals easier, you must remove some of the external engine hardware.

(1) Place CONTAINER 20L (5 USGAL) below the fuel manifold (220). Remove the tube cap assembly (70 and 135) from drain tube (75 and 140). Keep the tube cap assembly for installation.
(2) Remove the bolts (40) and nuts (35) that attach the Rotor Active Clearance Control (RACC) fuel manifold (65) and Low Pressure Turbine Clearance Control (LPTCC) fuel manifold (62) to the fuel manifold (220).
(3) Remove the bolts (85) and nuts (80) that attach the TCC fuel manifold (105) and PCR fuel manifold (130) to the fuel manifold (220).
(4) Remove the gasket seals (45) between the flanges of the fuel manifold (220), the RACC fuel manifold (65) and LPTCC fuel manifold (62). Remove and keep the gasket seals (45).
(5) Remove the gasket seals (90 and 110) between the flanges of the fuel manifold (220), the TCC fuel manifold (105) and PCR fuel manifold (130). Discard of the gasket seals (90 and 110).

[Rev.10 from 2021] 2026.04.01 02:57:52 UTC