Removal of the Drain Valve

TASK 53-29-41-000-001-A
Removal of the Drain Valve

ZONE: 133
ZONE: 134

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)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
133	BAY UNDER FWD CAR COMPT FLOOR
134	BAY UNDER FWD CAR COMPT FLOOR
825

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 53-22-14-000-001-A	Removal of the Forward Cargo-Compartment Floor-Panels
Drain Valve ** ON A/C NOT FOR ALL
Drain Valve ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 53-29-41-861-050-A

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 53-29-41-010-050-A

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position at forward cargo-compartment door 825.
(2) Open forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Set CARGO COMPT LIGHT switch 6LU to ON.
(4) In the forward cargo compartment, remove the applicable floor panel (Ref. AMM TASK 53-22-14-000-001).

4. Procedure
Subtask 53-29-41-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Drain Valve
(1) Remove the drain valve (5).
(2) Remove the nuts (1), the washers (2), the screws (4) and the retainer (3).

Subtask 53-29-41-020-050-B ** ON A/C NOT FOR ALL

A. Removal of the Drain Valve
(1) Remove the drain valve (4).
(2) Remove the nuts (1), the screws (3) and the retainer (2).

[Rev.10 from 2021] 2026.04.02 07:24:48 UTC