Removal of the Altitude Pressure Switch

TASK 38-31-69-000-001-A
Removal of the Altitude Pressure Switch

FIN: 43MG ** 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	1	ACCESS PLATFORM 5M (16 FT)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
312AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
Altitude Pressure Switch 43MG

3. Job Set-up
Subtask 38-31-69-861-050-A ** ON A/C NOT FOR ALL

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

Subtask 38-31-69-865-058-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACUUM-SYS	35MG	A06
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACUUM-GEN	33MG	A08
2001VU	VACU TOIL SYS-LAV PWR-E	34MG	A04
2001VU	VACU TOIL SYS-LAV PWR-D	39MG	A03
2001VU	VACU TOIL SYS-LAV PWR-A	32MG	A01
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACU-SYS	35MG	A06
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02

Subtask 38-31-69-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 5M (16 FT) in position.
(2) Open the access door 312AR.

4. Procedure
Subtask 38-31-69-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Altitude Pressure Switch 43MG
(1) Disconnect the electrical connector (5).
(2) Remove the bolts (4) and the washers (3).
(3) Remove the altitude pressure switch (1).

[Rev.10 from 2021] 2026.04.01 01:20:57 UTC