Removal of the Switch Manifold of the Blue Electric Pump

TASK 29-12-36-000-002-A
Removal of the Switch Manifold of the Blue Electric Pump

FIN: 2380GM ** 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	1	CAP - BLANKING
No specific	1	CONTAINER 5 L (1.32 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
Switch Manifold (2380GM) of the Blue Electric Pump - Location and Detail

3. Job Set-up
Subtask 29-12-36-865-053-A ** ON A/C NOT FOR ALL

A. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
123VU	B HYD/ELEC PUMP	2701GJ	AB09

Subtask 29-12-36-860-052-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Blue hydraulic system:

In the cockpit on the hydraulic section 40VU of the overhead panel
On the ground service panel of the Blue hydraulic system.

(3) Make sure that the Blue hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001).
(4) Depressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-001).
(5) Put a CONTAINER 5 L (1.32 USGAL) below the HP manifold of the Blue hydraulic system.

Subtask 29-12-36-010-051-A ** ON A/C NOT FOR ALL

C. Open the access door 195BB.

4. Procedure
Subtask 29-12-36-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Switch Manifold

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL LOOSEN OR TIGHTEN THE UNION TOO MUCH.

(1) Hold the switch manifold (3) and loosen the end-fittings (2) and (9).
(2) Remove the pipes (1) and (10).
(3) Remove the electrical connector (6) from the pressure switch (5).
(4) Put a CAP - BLANKING on the disconnected electrical connector (6).
(5) Cut, remove and discard the lockwire from the pressure switch (5).
(6) Remove the pressure switch (5).
(7) Remove and discard the O-ring (4).
(8) Hold the switch manifold (3) and loosen and remove the end fitting (8) from the HP manifold (7).
(9) Remove the switch manifold (3).
(10) Put the PLUG-BLANKING in each disconnected line end.

[Rev.10 from 2021] 2026.04.01 00:19:13 UTC