Removal of the Pneumatic Starter [CFMI]

TASK 80-11-10-000-001-A
Removal of the Pneumatic Starter

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	PLUG - BLANKING
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
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
Pneumatic Starter

3. Job Set-up
Subtask 80-11-10-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions

WARNING: IF IT IS NECESSARY TO ENERGIZE THE AIRCRAFT FOR A MAINTENANCE WORK WHILE YOU DO THIS MAINTENANCE PROCEDURE, MAKE SURE THAT ONLY EXTERNAL POWER IS USED. THE USE OF APU OR ENGINE POWER CAN CAUSE PRESSURIZED AIR LEAKAGE IN THE PNEUMATIC SYSTEM, AND INJURY CAN OCCUR.

(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).
(4) On the AIR COND panel 30VU:
(a) Make sure that the APU BLEED pushbutton switch is released (ON legend is off).
(b) Make sure that a WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.
(5) On the HP ground connector:
(a) Make sure that a WARNING NOTICE(S) is in position to tell persons not to pressurize the pneumatic system.

Subtask 80-11-10-010-050-A ** ON A/C NOT FOR ALL

B. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 80-11-10-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Pneumatic Starter.

WARNING: BE CAREFUL WHEN YOU MOVE THE ENGINE STARTER. BECAUSE THE STARTER WEIGHS APPROXIMATELY 38 POUNDS (17 KG), INJURY CAN OCCUR.

CAUTION: DURING THE REMOVAL, KEEP THE STARTER PERPENDICULAR TO ITS AGB MOUTING PAD. IF YOU DO NOT, THE SEAL RING CAN SNAP OUT AND CAUSE THE SUDDEN DISENGAGEMENT OF THE STARTER BECAUSE OF ITS WEIGHT, AND THUS CAUSE DAMAGE TO THE DRIVE SHAFT. NEVER LET THE DRIVE SHAFT SUPPORT THE WEIGHT OF THE STARTER.

CAUTION: DURING STARTER REMOVAL/INSTALLATION, BE CAREFUL NOT TO CAUSE DAMAGE TO THE STARTER FUSE PIN WHEN YOU TURN/TWIST THE STARTER ASSEMBLY IN OPPOSITE CLOCKWISE/COUNTERCLOCKWISE DIRECTIONS FROM THE MOUNTING PAD. CFM RECOMMENDS THAT YOU USE THE CORRECT LEVERAGE PROCEDURES AND CORRECT TOOLS TO REMOVE/INSTALL THE STARTER ASSEMBLY FROM/ON THE AGB.

(1) Remove V-clamp (70) which attaches the air supply duct (80) to pneumatic starter (60).
(2) Remove starter (60) from accessory gearbox as follows:
(a) Remove V-clamp (10) that attaches pneumatic starter to the AGB.
(b) Remove the starter from AGB by pulling it out from the gearbox.
(3) Remove and discard O-ring (50) from starter output drive shaft.
PRE SB CFM56-5 72-454
(4) Remove seal ring assembly (40) from the AGB housing, and keep it if not damaged.
POST SB CFM56-5 72-454
(5) Remove seal ring assembly (40) from the AGB housing.

NOTE: The seal ring assembly is made of a support (metal ring) (20) and a preformed packing (30).

(6) If the preformed packing (30) is damaged, do as follows:
(a) Remove the preformed packing (30) from the support (20).
(b) Discard the preformed packing (30).
END OF SB CFM56-5 72-454
(7) Install PLUG - BLANKING on all openings.

[Rev.10 from 2021] 2026.04.01 04:34:16 UTC