Removal of the Diaphragm in the Aft Cargo Compartment

TASK 26-23-25-000-002-A
Removal of the Diaphragm in the Aft Cargo Compartment

ZONE: 150
ZONE: 160
ZONE: 170

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 2M (6 FT) - ADJUSTABLE
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
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
160	BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT
170	AFT CAB U/FLOOR COMPT AFT BHD OF BULK
161DW, 811, 826

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
Diaphragm in the Aft Cargo Compartment

3. Job Set-up
Subtask 26-23-25-861-050-A ** ON A/C NOT FOR ALL

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

Subtask 26-23-25-010-052-A ** ON A/C NOT FOR ALL

B. Get access to the avionics compartment.
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the access door 811.
(2) Open the access door 811 (Ref. AMM TASK 52-41-00-010-002).

Subtask 26-23-25-865-053-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
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C04
49VU	AIR COND/CARGO FIRE/EXTIG/BTL1	1WX	C03

Subtask 26-23-25-010-053-C ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the aft cargo-compartment door 826.
(2) Open the aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-001).
(3) Set the CARGO COMPT LIGHT switch 8LU to the ON position.
(4) Remove the partition panel 161DW (Ref. AMM TASK 25-55-12-000-001).

4. Procedure
Subtask 26-23-25-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Diaphragm
(1) Hold the diaphragm (3) and loosen the nuts (2).
(2) Carefully disconnect the pipes (1) from the diaphragm (3).
(3) Remove the diaphragm (3).
(4) Put the PLUG-BLANKING in each disconnected line end.

[Rev.10 from 2021] 2026.03.31 23:46:20 UTC