Removal of the Pressure Reducer

TASK 26-23-18-000-001-A
Removal of the Pressure Reducer

ZONE: 130
FIN: 5014WM ** ON A/C NOT FOR ALL
FIN: 5015WM ** 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
130	FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
132MW, 825

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 25-54-12-000-003-A	Removal of the Sidewall Panels in the Forward Cargo Compartment
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Pressure Reducer (5014WM, 5015WM) ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 26-23-18-861-051-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 26-23-18-865-052-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

Subtask 26-23-18-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the forward cargo-compartment door 825.
(2) Open the forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Remove the protection panel 132MW (Ref. AMM TASK 25-54-12-000-003).

4. Procedure
Subtask 26-23-18-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Pressure Reducer

NOTE: The removal procedure is the same for the pressure reducers 5014WM and 5015WM.

(1) Loosen the nuts (7) and disconnect the pipes (8).
(2) Remove the unions (6).

NOTE: Retain the unions (6) for installation.

(3) Remove and discard the O-rings (5).
(4) Release the tab washer (2) and remove the nut (1).
(5) Remove and discard the tab washer (2).
(6) Remove the pressure reducer (4).
(7) Put the PLUG-BLANKING in each disconnected line end.
(8) Put PLUG - BLANKING on the open ports of the pressure reducer (4).

[Rev.10 from 2021] 2026.03.31 23:46:11 UTC