Removal of the Drain Valve

TASK 38-14-45-000-001-A
Removal of the Drain Valve

FIN: 14MP ** 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 2M (6 FT)
No specific	AR	CAP - BLANKING
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
132PW, 825

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-24-38-680-001-A	Draining of the Potable Water System (with Electrical Power)
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 25-54-12-000-001-A	Removal of the Forward Cargo-Compartment Partition
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Drain Valve (14MP)

3. Job Set-up
Subtask 38-14-45-861-050-A ** ON A/C NOT FOR ALL

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

Subtask 38-14-45-680-050-A ** ON A/C NOT FOR ALL

B. Drain the potable water system (Ref. AMM TASK 12-24-38-680-001).

Subtask 38-14-45-865-050-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	WATER SYSTEM-QANT-IND	1MA	B01
** ON A/C NOT FOR ALL
2001VU	WATER SYS-DRAIN	1MP	B05
** ON A/C NOT FOR ALL
2001VU	WATER-SYS-DRAIN	1MP	B05

Subtask 38-14-45-010-050-A ** ON A/C NOT FOR ALL

D. Get Access

Drain Valve (14MP) ** ON A/C NOT FOR ALL

(1) Put an ACCESS PLATFORM 2M (6 FT) in position at the FWD cargo-compartment door 825.
(2) Open FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Set CARGO COMPT LIGHT switch 6LU to ON position.
(4) Remove access panel 132PW (Ref. AMM TASK 25-54-12-000-001).
(5) Open the insulation sleeve (12).

4. Procedure
Subtask 38-14-45-020-052-A ** ON A/C NOT FOR ALL

A. Removal of the Drain Valve Assembly

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTOR IS CLEAN BEFORE YOU DISCONNECT IT. DIRTY ELECTRICAL CONNECTORS CAN CAUSE THRUST REVERSER PROBLEMS.

(1) Disconnect the electrical connector (7) from the drain valve assembly (6).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Disconnect the hose (2) and the pipe (5).
(4) Remove and discard the cotter pin (11) and remove the washer (10).
(5) Remove the pin (9) and disconnect the linkage (8).
(6) Remove the bolts (4) and the washers (3).
(7) Remove the drain valve assembly (6) and the spacers (1).
(8) Put the PLUG-BLANKING in each disconnected line end.
(9) If necessary, remove the insulation sleeve (12).

[Rev.10 from 2021] 2026.04.02 06:25:43 UTC