Removal of the Blue Electric-Pump Supply Contactor

TASK 29-12-55-000-001-A
Removal of the Blue Electric-Pump Supply Contactor

WARNING: ISOLATE ALL THE AIRCRAFT ELECTRICAL CIRCUITS.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	AR	CAP - BLANKING
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
121AL, 822

C. Referenced Information

REFERENCE	DESIGNATION
Blue Electric-Pump Supply Contactor (2705GJ)

3. Job Set-up
Subtask 29-12-55-941-050-A

A. Safety Precautions
(1) Make sure that the external power connector is not connected to the aircraft receptacle (20XG) (receptacle behind the access door 121AL).
(2) Put WARNING NOTICE(S) on the access door 121AL to tell persons not to connect the external power connector.

Subtask 29-12-55-860-050-A

B. Aircraft Maintenance Configuration
(1) In the cockpit, on the overhead panel 35VU, make sure that these pushbutton switches are released:

APU GEN,
1 BAT 2,
GEN1, GEN2,
EXT PWR.

(2) In the cockpit, put WARNING NOTICE(S) to tell persons not to operate the pushbutton switches on these overhead panels:

21VU (EMER ELEC PWR),
25VU (APU),
35VU (ELEC).

Subtask 29-12-55-010-050-A

C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position at the access door 822.
(2) Open the access door 822.
(3) Remove the cover (1) of the panel 107VU.

Blue Electric-Pump Supply Contactor (2705GJ)

4. Procedure
Subtask 29-12-55-020-051-A

A. Removal of the Contactor
(1) Disconnect the electrical connector (4).
(2) Put a CAP - BLANKING on the connector (4) and the electrical receptacle (3).

CAUTION: REMOVE THE CONTACTOR ONLY AND NOT THE BASE OR THE MODULE WHERE THE WIRES ARE CONNECTED.

(3) Remove the 6 screws (5) and the washers (6).
(4) Remove the contactor (2).

[Rev.10 from 2021] 2026.04.01 00:19:45 UTC