Installation of the Engine Pump Fire-Valve

TASK 29-11-52-400-001-A
Installation of the Engine Pump Fire-Valve

WARNING: MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

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

FIN: 1046GK

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	ACCESS PLATFORM 3M (10 FT)
No specific	1	CONTAINER 1 L (1/4 USGAL)
No specific	AR	SAFETY BARRIER(S)
No specific	1	WARNING NOTICE(S)
No specific	Torque wrench: range to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
574AB, 574BB

D. 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 29-10-00-720-001-A	Functional Check of Hydraulic Fire Shut-Off Valves
TASK 29-10-00-720-802-A	Functional Check of Hydraulic Fire Shut-Off Valves
TASK 29-10-00-863-001-A	Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 29-23-00-864-001-A	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 71-00-00-710-001-A	Dry Motoring Check
TASK 71-00-00-710-001-B	Dry Motoring Check
TASK 71-00-00-710-045-A	Test No.1 : Dry Motor Leak Check
TASK 71-00-00-860-817-A	Motor the Engine (Dry Method)
Engine Pump Fire-Valve (1046GK) ** ON A/C NOT FOR ALL
Engine Pump Fire-Valve (1046GK) ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 29-11-52-941-060-A

A. Safety Precautions

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) You must obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002) when you do work on the hydraulic system.
(2) Make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the Green hydraulic system.
(3) Make sure that the SAFETY BARRIER(S) are in position.

Subtask 29-11-52-860-050-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Make sure that the Green Hydraulic system is depressurized (Ref. AMM TASK 29-00-00-864-001).
(2) Make sure that the applicable hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Make sure that the ACCESS PLATFORM 3M (10 FT) is below the zone 574.
(4) Make sure that the access panels 574AB and 574BB are open.

Subtask 29-11-52-860-050-B ** ON A/C NOT FOR ALL

Subtask 29-11-52-865-051-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	HYD/FIRE VALVE/G/ENG1	1703GK	C13
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33

4. Procedure
Subtask 29-11-52-420-054-A

A. Preparation for Installation
(1) Remove the PLUG-BLANKING from each disconnected line end.
(2) Clean the component interfaces and the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) Make sure that the hydraulic line end-fittings are serviceable.

Subtask 29-11-52-420-052-A ** ON A/C NOT FOR ALL

B. Installation of the Engine Pump Fire-Valve
(1) Put the engine pump fire-valve (5) in position.
(2) Engage the coupling-nut (6). Do not tighten it fully.
(3) Extend the compensated slide (4) to engage the coupling-nut (3). Do not tighten it fully.
(4) Make sure that the engine pump fire-valve (5) is correctly aligned.
(5) TORQUE the coupling-nuts (6) and (3) to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft )

.
(6) Remove the CAP-BLANKING from each electrical connector and receptacle.
(7) Connect the cable connector (1) to the electrical connector (2).

Subtask 29-11-52-420-052-B ** ON A/C NOT FOR ALL

B. Installation of the Engine Pump Fire-Valve
(1) Put the engine pump fire-valve (5) in position.
(2) Connect and loosely tighten the coupling-nut (6).
(3) Extend the compensated slide (4) to engage the coupling-nut (3). Loosely tighten the coupling-nut (3).
(4) Make sure that the engine pump fire-valve (5) is correctly aligned and set the compensated slide (4) to 20 -3 +3 mm (0.79 -0.12 +0.12 in.).
(5) TORQUE the coupling-nuts (3) and (6) to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft )

.
(6) Remove the CAP-BLANKING from each electrical connector and receptacle.
(7) Connect the cable connector (1) to the electrical connector (2).

Subtask 29-11-52-865-052-A

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	HYD/FIRE VALVE/G/ENG1	1703GK	C13
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R33

Subtask 29-11-52-863-051-A

D. Pressurize the Hydraulic System

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).

Subtask 29-11-52-720-051-A ** ON A/C NOT FOR ALL

E. Test
(1) Do a dry motoring check (Ref. AMM TASK 71-00-00-710-001).
(2) Do a functional test of the engine pump fire-valve (5) (Ref. AMM TASK 29-10-00-720-001).
(3) Examine the hydraulic connections of the engine pump fire-valve (5) for leaks. Leaks are not permitted.

Subtask 29-11-52-720-051-B ** ON A/C NOT FOR ALL

E. Test
(1) Do a dry motoring check (Ref. AMM TASK 71-00-00-710-045).
(2) Do an functional test of the engine pump fire-valve (5) (Ref. AMM TASK 29-10-00-720-001).
(3) Examine the hydraulic connections of the engine pump fire-valve (5) for leaks. Leaks are not permitted.

Subtask 29-11-52-720-051-D ** ON A/C NOT FOR ALL

E. Test
(1) Do a dry motoring check (Ref. AMM TASK 71-00-00-860-817).
(2) Do a functional test of the engine pump fire-valve (5) (Ref. AMM TASK 29-10-00-720-802).
(3) Examine the hydraulic connections of the engine pump fire-valve (5) for leaks. Leaks are not permitted.

Subtask 29-11-52-864-052-A

F. Depressurize the Hydraulic System

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).

5. Close-up
Subtask 29-11-52-410-050-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the container.
(3) Close the access panels 574AB 574BB.

Subtask 29-11-52-410-050-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panels 574AB 574BB.

Subtask 29-11-52-942-051-A

B. Removal of Equipment
(1) Remove the container.
(2) Remove the SAFETY BARRIER(S).
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 07:53:30 UTC