Installation of the Check Valve

TASK 26-23-21-400-001-A
Installation 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

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03FAB1)	Mineral Oil base Grease-- Vaseline or Petrolatum -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
825

D. Referenced Information

REFERENCE	DESIGNATION
TASK 26-23-00-200-004-A	Check of the Fire Extinguishing Lines of the Two Fire Extinguisher Bottles for Leakage and Blockage
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close 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 26-23-21-010-051-A ** ON A/C NOT FOR ALL

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

Subtask 26-23-21-865-051-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

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 26-23-21-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Check Valve

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

(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking plugs from the disconnected line ends.
(4) Remove the blanking plugs from the check valve (3).
(5) Apply grease as follows:

CAUTION: APPLY A SMALL QUANTITY OF THE CORRECT GREASE TO THE MALE THREADS OF THE CONNECTIONS. THIS WILL PREVENT DAMAGE TO THE THREADS. MAKE SURE THAT GREASE DOES NOT GO INTO THE PIPES. GREASE IN THE PIPES CAN CAUSE A MALFUNCTION OF THE SYSTEM.

(a) Apply a small quantity of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the male threads.
(6) Put the check valve (3) in position.
(7) Connect the pipe (1) to the check valve (3) and tighten the nut (2).
(8) Connect the pipe (5) to the check valve (3) and tighten the nut (4).

Subtask 26-23-21-210-051-A ** ON A/C NOT FOR ALL

B. Do a check of the distribution-piping of the fire-extinguisher bottle 4010WX for leakage and obstruction (Ref. AMM TASK 26-23-00-200-004).

5. Close-up
Subtask 26-23-21-865-052-A ** ON A/C NOT FOR ALL

A. Remove the safety clip(s) and the tag(s) and close 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

Subtask 26-23-21-410-050-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the protection panel 132MW.
(3) Close the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:46:16 UTC