Removal of the Battery Shunt

TASK 24-38-54-000-001-A
Removal of the Battery Shunt

ZONE: 126
FIN: 3PB1
FIN: 3PB2

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) - ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
126	LATERAL AVIONIC COMPARTMENT
812, 822

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
Battery Shunts (3PB1 and 3PB2)

3. Job Set-up
Subtask 24-38-54-861-050-A

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 24-38-54-941-050-A

B. Safety Precautions
(1) In the cockpit, on the ELEC panel 35VU, release these pushbutton switches:

BAT 1,
BAT 2.

(2) In the cockpit, on the ELEC panel 35VU, put a WARNING NOTICE(S) in position to tell persons not to operate the batteries.

Subtask 24-38-54-010-050-A

C. Get access to the avionics compartment.
(1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the avionics compartment doors 812 and 822.
(2) Open the access doors 812 and 822.
(3) Open the access panels of the AC/DC emergency power center 106VU and the battery power center 105VU.

Subtask 24-38-54-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 3PB1 (SHUNTBAT 1)
105VU	ELEC/HOT BUS/701PP SPLY	5PB1	D01
105VU	ELEC/HOT BUS/701PP SPLY	12PB1	E01
106VU	CSM/G /EV/MAN/SPLY	6XE	B04
122VU	ELEC/REFLNG/ON/BAT	1PR	U28
FOR FIN: 3PB2 (SHUNTBAT 2)
105VU	ELEC/HOT BUS/702PP SPLY	5PB2	D02
105VU	ELEC/HOT BUS/702PP SPLY	12PB2	E02
106VU	CSM/G /EV/MAN/SPLY	6XE	B04
122VU	ELEC/REFLNG/ON/BAT	1PR	U28

4. Procedure
Subtask 24-38-54-020-050-A

A. Removal of the Battery Shunt
(1) Remove the bolts (5).
(2) Remove and discard the lockwashers (6).
(3) Remove the washers (7) and the ground cables (8).
(4) Remove the bolts (2).
(5) Remove and discard the lockwashers (3).
(6) Remove the electrical wires (4).
(7) Remove the bolts (9) and the washers (10).
(8) Remove the battery shunt (1).

[Rev.10 from 2021] 2026.03.31 23:23:58 UTC