Installation of the Diaphragm

TASK 26-23-25-400-001-A
Installation of the Diaphragm

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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
132MW, 825

D. Referenced Information

REFERENCE	DESIGNATION
TASK 25-54-12-000-003-A	Removal of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-54-12-400-003-A	Installation of the Sidewall Panels in the Forward Cargo Compartment
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
Diaphragm. ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 26-23-25-010-051-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Make sure that ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position below forward cargo-compartment door 825.
(2) Make sure that forward cargo-compartment door 825 is open (Ref. AMM TASK 52-30-00-860-001).
(3) Make sure that protection panel 132MW is removed (Ref. AMM TASK 25-54-12-000-003).

Subtask 26-23-25-865-051-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 26-23-25-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Diaphragm
(1) Remove the blanking plugs from the disconnected line ends.
(2) Clean the component interfaces and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that the diaphragm (3) is in the correct condition and has no blockage.
(5) Apply grease:

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 of the diaphragm (3).
(6) Put the diaphragm (3) in its installation position and carefully connect the pipes (1).
(7) Hold the diaphragm (3) and tighten the nuts (2).

Subtask 26-23-25-210-050-A ** ON A/C NOT FOR ALL

B. Test
(1) Do a check of the fire-extinguishing lines for leakage and obstruction, without bottle 4005WX/4015WX (Ref. AMM TASK 26-23-00-200-004).

5. Close-up
Subtask 26-23-25-865-052-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 26-23-25-410-050-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 protection panel 132MW (Ref. AMM TASK 25-54-12-400-003).
(3) Close forward 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 23:46:19 UTC