Removal of the Check Valve

TASK 26-23-21-000-001-A
Removal of the Check Valve

FIN: 5016WM ** ON A/C NOT FOR ALL
FIN: 5017WM ** 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 3M (10 FT)- ADJUSTABLE
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
825

C. Referenced Information

REFERENCE	DESIGNATION
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Check Valve ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 26-23-21-010-050-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the FWD cargo-compartment door 825.
(2) Open the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Remove the protection panel 132MW.

Subtask 26-23-21-865-050-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
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C05
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C04
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C04
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C03
** ON A/C NOT FOR ALL
122VU	AIR COND/CARGO/FIRE/EXTIG	1WX	T19

4. Procedure
Subtask 26-23-21-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Check Valve

NOTE: The removal procedure is the same for the check valves 5016WM and 5017WM.

(1) Loosen the nut (2) and disconnect the pipe (1) from the check valve (3).
(2) Loosen the nut (4) and disconnect the pipe (5) from the check valve (3).
(3) Remove the check valve (3).
(4) Put the PLUG-BLANKING in each disconnected line end.
(5) Put PLUG - BLANKING on the open ports of the check valve (3).

[Rev.10 from 2021] 2026.03.31 23:46:15 UTC