Installation of the Engine 2 Pump Suction Self-Sealing Coupling

TASK 29-13-38-400-041-A
Installation of the Engine 2 Pump Suction Self-Sealing Coupling

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

WARNING: DO NOT TOUCH THE HYDRAULIC SYSTEM COMPONENTS FOR A SHORT TIME AFTER THE ENGINE IS SHUTDOWN. THE ENGINE COMPONENTS STAY HOT FOR SOME TIME AND CAN CAUSE INJURY.

CAUTION: DO NOT LET HYDRAULIC FLUID FALL ON THE ENGINE. UNWANTED HYDRAULIC FLUID MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FLUID CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.

FIN: 3672GM ** 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 2M (6 FT) - ADJUSTABLE
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 10.17 and 9.04 m.daN (75.00 and 66.67 lbf.ft )
No specific	Torque wrench: range to between 13.00 and 11.30 m.daN (95.87 and 83.33 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
No specific	absorbent paper

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB
FOR [1000EM2] (ENGINE-2)
447AL

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 12-12-29-611-002-A	Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-13-00-710-002-A	Operational Test of the Yellow Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 29-23-00-863-002-A	Pressurize the Yellow Hydraulic System from the Green Hydraulic System through the PTU with the Ground Service Cart
Engine 2 Pump Suction Self-Sealing Coupling
FOR [1000EM2] (ENGINE-2)
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors

3. Job Set-up
Subtask 29-13-38-860-053-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-002).
(2) Make sure that the Yellow hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(3) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the Yellow hydraulic system:

on the ground service panel 198CB.

(4) Make sure that the WARNING NOTICE(S) is (are) in position on the access door 195BB to tell persons not to pressurize the Yellow hydraulic reservoir.
(5) Make sure that an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the engine 1(2).
(6) Make sure that the fan-cowl door is open.
(7) Make sure that the door 195BB is open.

Subtask 29-13-38-941-052-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:

make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to start the engine.

(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the Yellow hydraulic system:

in the cockpit, on the HYD section of the overhead panel 40VU.

(4) On the overhead maintenance panel 50VU:

make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

(5) Make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to energize the FADEC 1(2).
(6) Make sure that the CONTAINER 5 L (1.32 USGAL) is below the fluid disconnect panel to collect the hydraulic fluid.

Subtask 29-13-38-865-051-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/Y HYD/PUMP ENG2/MONG	3700GD	Q37
121VU	HYDRAULIC/Y HYD/PUMP ENG2/CTL	3701GD	Q36

4. Procedure
Subtask 29-13-38-420-052-A ** ON A/C NOT FOR ALL

A. Installation of the Engine 2 Pump Suction Self-Sealing Coupling
(1) Remove the protective covers from the suction hose (5), the self-sealing coupling (15) and the union on the hydraulic pump (10).
(2) Connect the self-sealing coupling (15) to the union on the hydraulic pump (10).
(3) TORQUE the self-sealing coupling (15) to between 10.17 and 9.04 m.daN (75.00 and 66.67 lbf.ft )

NOTE: Use a second wrench to hold the union on the hydraulic pump when you TORQUE the self-sealing coupling (15).

(4) Connect the suction hose (5) to the self-sealing coupling (15).
(5) TORQUE the coupling nut on the suction hose (5) to between 10.17 and 9.04 m.daN (75.00 and 66.67 lbf.ft )

NOTE: Use a second wrench to hold the self-sealing coupling (15) when you TORQUE the coupling nut on the suction hose.

(6) Remove the container and the absorbent material.

Subtask 29-13-38-420-053-A ** ON A/C NOT FOR ALL

B. Preparation for the Test
(1) Connect the hose coupling half to the fluid disconnect panel and tighten the coupling nut by hand.
(2) TORQUE the coupling nut to between 10.17 and 9.04 m.daN (75.00 and 66.67 lbf.ft )

Subtask 29-13-38-870-051-A ** ON A/C NOT FOR ALL

C. Bleeding
(1) Put a CONTAINER 5 L (1.32 USGAL) below the connection between the suction hose coupling and the fluid disconnect panel.
(2) Put absorbent paper on the hose coupling nut.
(3) On the connection between the hose coupling half and the suction hose:

lightly loosen the upper end of the suction hose from its coupling half
use two wrenches.

(4) Let the hydraulic fluid flow from the disconnected connection into the container until there are no air bubbles.
(5) When you complete the bleeding, TORQUE the hose coupling nut to between 13.00 and 11.30 m.daN (95.87 and 83.33 lbf.ft )

Subtask 29-13-38-710-051-A ** ON A/C NOT FOR ALL

D. Operational Test
(1) Pressurize the Yellow hydraulic reservoir (Ref. AMM TASK 29-14-00-614-002).
(2) Pressurize the Yellow hydraulic system
(Ref. AMM TASK 29-23-00-863-002).
(3) Do an operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002)
(4) During the dry motoring, make sure that there are no leaks from the connections.
(5) Make sure that the level of the hydraulic fluid in the Yellow reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).

NOTE: There must be between 14 and 16 liters of hydraulic fluid in the Yellow reservoir. This prevents a drop in the level of the fluid if the bleeding is not correct.

5. Close-up
Subtask 29-13-38-410-051-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).
(3) Make sure that the work area is clean and clear of tools and other items.
(4) Close the left fan cowl door :
(a) FOR [1000EM2] (ENGINE-2)
close the door 447AL (Ref. AMM TASK 71-13-00-410-040)
(5) Close the door 195BB.

[Rev.10 from 2021] 2026.04.01 00:20:47 UTC