Removal of the Handcranking Drive Cover [CFMB]

TASK 72-63-00-000-002-A
Removal of the Handcranking Drive Cover

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	HAMMER - SLIDE
No specific	AR	PLIERS - JAWED, SOFT
No specific	AR	WARNING NOTICE(S)
856A2632	1	PULLER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
Handcranking Drive Cover
Handcranking Drive Cover

3. Job Set-up
Subtask 72-63-00-941-056-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 72-63-00-010-063-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

CAUTION: USE ONLY APPLICABLE TOOLS FOR THE REMOVAL OF THE HANDCRANKING DRIVE COVER. THE USE OF NON-APPLICABLE TOOLS CAN CAUSE DAMAGE TO THE AGB HOUSING, WITH A RISK THAT IT WILL NOT BE POSSIBLE TO REPAIR IT.

Subtask 72-63-00-020-057-A ** ON A/C NOT FOR ALL

A. Removal of the Handcranking Drive Cover

NOTE: The new handcranking cover (SB CFM 72-156) must stay attached to the AGB during operation.

(1) Disconnect the electrical cable connectors, Channel B (70) of HJ10 harness and Channel A (50) of HJ9 harness, from the control alternator (60). Use PLIERS - JAWED, SOFT, if necessary.
(2) Install protective caps on the electrical cables, Channel B (70) and Channel A (50), and on the control alternator electrical connectors.
(3) Cut and remove the lockwire. Remove the two bolts (10) and washers (20) which attach the cover (40) to the AGB forward face.
(4) Install the 856A2632 PULLER (856A2632G01) in the tapped hole of the cover (40). Tighten with your hand.

PRE SB CFM 72-156

(5) Remove the cover (40). Use a HAMMER - SLIDE, if necessary.

END PRE SB CFM 72-156

POST SB CFM 72-156

(6) Remove the cover (40) and let it hang by the lanyard cable. Use a HAMMER - SLIDE, if necessary.

END OF SB CFM 72-156

(7) Remove the 856A2632 PULLER from the cover. Remove and discard the two O-rings (30).

[Rev.10 from 2021] 2026.04.01 12:55:21 UTC