Removal of the Constant Speed Motor/Generator (CSM/G)

TASK 24-24-51-000-001-A
Removal of the Constant Speed Motor/Generator (CSM/G)

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

WARNING: DO NOT WALK ON A CLOSED LANDING GEAR DOOR.

CAUTION: USE HIGH-PRESSURE SPRAYING EQUIPMENT FOR SPECIFIED AREAS ONLY. DO NOT USE HIGH-PRESSURE SPRAYING EQUIPMENT TO CLEAN THE AREAS AROUND SENSORS, PROBES, ANTENNAS, ETC. YOU MUST CLEAN THESE AREAS BY HAND. MAKE SURE THAT YOU ADJUST THE HIGH-PRESSURE SPRAYING EQUIPMENT TO, AND USE IT AT, THE SPECIFIED VALUES. IF YOU DO NOT OBEY THESE PRECAUTIONS, YOU CAN CAUSE DAMAGE TO THE SURFACE OR TO PARTS. HIGH-PRESSURE SPRAYING EQUIPMENT CAN PUSH LIQUIDS INTO BEARINGS, JOINTS, PROBES, BRAKES, ELECTRICAL CONNECTORS AND OTHER SEALED COMPONENTS. LIQUIDS THAT GO INTO THESE AREAS CAN FREEZE DURING AIRCRAFT FLIGHT, REMOVE LUBRICANTS, CAUSE CORROSION AND ELECTRICAL FAULTS.

ZONE: 147
FIN: 8XE

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	CAP - BLANKING
No specific	1	CONTAINER - HYDRAULIC FLUID RESISTANT
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	STEPLADDER 2.0 M (6.6 FT)
No specific	1	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
147	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
Constant Speed Motor/Generator - CSM/G

3. Job Set-up
Subtask 24-24-51-860-050-A

A. Aircraft Maintenance Configuration
(1) On the overhead panel 21VU, make sure that:

the guarded pushbutton-switch EMER GEN TEST is released (the guard is closed),
the guarded pushbutton-switch MAN ON/AUTO is released (the guard is closed),
the guarded pushbutton-switch RAT MAN ON 2805GE is released (the guard is closed).

(2) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the Blue hydraulic system:

in the cockpit on the overhead panel 40VU,
on the ground service panel of the Blue hydraulic system.

(3) Depressurization of the Hydraulic System
(a) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-00-00-864-001).
(b) Depressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-001).

Subtask 24-24-51-865-050-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
105VU	ELEC/CSM/G /EV AUTO/SPLY	7XE	C01
106VU	CSM/G /EV/MAN/SPLY	6XE	B04
122VU	ELEC/EMER GEN AUTO/2	9XE	Z26
122VU	ELEC/EMER GEN AUTO/1	11XE	Z25

Subtask 24-24-51-010-050-A

C. Get Access
(1) Open the LH or RH Main Landing-Gear (MLG) door (Ref. AMM TASK 32-12-00-010-001).
(2) Put the STEPLADDER 2.0 M (6.6 FT) in position at the MLG bay.

4. Procedure
Subtask 24-24-51-020-050-A

A. Removal of the Constant Speed Motor/Generator (8XE)
(1) Disconnect the electrical connectors (2),(3),(13) and (14) from the CSM/G (1).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Put a CONTAINER - HYDRAULIC FLUID RESISTANT in position to collect hydraulic fluid leakage.
(4) Disconnect the flexible hydraulic pipes (11), (12) and (15) from the CSM/G (1).
(5) Disconnect the flexible drain hoses (4) and (10) from the CSM/G (1).
(6) Put the PLUG-BLANKING in each disconnected line end.

CAUTION: MAKE SURE THAT THE ELECTRICAL WIRE(S) IS(ARE) DISCONNECTED BEFORE YOU DISCONNECT THE BONDING STRAP(S).

(7) Loosen the lockwashers (8), remove the screws (5), the washer (6) and discard the lockwashers (8).
(8) Loosen the bonding strap (7) from its position.
(9) Remove the CSM/G (1) from the support mounts (9).

[Rev.10 from 2021] 2026.03.31 23:22:40 UTC