Removal of the GPWC

TASK 34-48-34-000-001-A
Removal of the GPWC

ZONE: 128
FIN: 1WZ ** 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	ACCESS PLATFORM 1M(3 FT)
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
128	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
GPWC

3. Job Set-up
Subtask 34-48-34-865-050-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	EIS/GPWS/115VAC	3WZ	P07
121VU	EIS/GPWS/28VDC	2WZ	P06

Subtask 34-48-34-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 1M(3 FT) in position at the access door 824 in zone 128.
(2) Open the access door 824.

4. Procedure
Subtask 34-48-34-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the GPWC
(1) Loosen the nut (4).
(2) Lower the nut (4).
(3) Pull the GPWC (1) on its rack (3) to disconnect the electrical connectors (2).
(4) Remove the GPWC (1) from its rack (3).
(5) Put CAP - BLANKING on the disconnected electrical connectors (2).

[Rev.10 from 2021] 2026.04.02 06:23:29 UTC