Installation of the Engine-Pump Case-Drain Filter

TASK 29-11-43-400-041-A
Installation of the Engine-Pump Case-Drain Filter

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: 1084GM ** 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	1	WRENCH - TORQUE
No specific	Torque wrench: range to between 245 and 215 lbf.in (2.77 and 2.43 m.daN )
No specific	Torque wrench: range to between 0.79 and 0.56 m.daN (69.91 and 49.56 lbf.in )
No specific	Torque wrench: range to between 2.26 and 2.03 m.daN (16.67 and 14.97 lbf.ft )
No specific	Torque wrench: range to between 2.76 and 2.42 m.daN (20.35 and 17.85 lbf.ft )
No specific	Torque wrench: range to between 3.39 and 2.82 m.daN (25.00 and 20.80 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
437AL

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
25	PACKING	AIPC 29-11-43-01-020
25	PACKING	AIPC 29-11-43-01-040

E. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-11-00-710-001-A	Operational Test of the Green Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
Engine-Pump Case-Drain Filter

3. Job Set-up
Subtask 29-11-43-860-056-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(2) Make sure that the Green 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 Green hydraulic system:

on the ground service panel 197CB.

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

Subtask 29-11-43-941-056-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 Green 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 a CONTAINER 5 L (1.32 USGAL) is below the case drain filter.

4. Procedure
Subtask 29-11-43-420-055-A ** ON A/C NOT FOR ALL

A. Installation of the Case Drain Filter
(1) Remove the protective covers from the ports on the filter assembly (30), the hose/tube (15), the union (20), the elbow (40) and the hose (45).
(2) Install the filter assembly (30) on the support bracket with the bolts (5) and the washers (10).
(3) TORQUE the bolts (5) to between 0.79 and 0.56 m.daN (69.91 and 49.56 lbf.in )

.
(4) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new packings (25).
(5) Put the new AIPC 29-11-43-01-020 PACKING (25) on the union (20) and install the union (20) in the port at the top of the filter assembly (30).

NOTE: The packing (25) is supplied with the union (20).

(6) TORQUE the union (20) to between 3.39 and 2.82 m.daN (25.00 and 20.80 lbf.ft )

.
(7) Connect the upper case drain hose/tube (15) to the union (20) on the filter assembly (30).
(8) TORQUE the coupling nut on the upper case drain hose (15) to between 2.76 and 2.42 m.daN (20.35 and 17.85 lbf.ft )

NOTE: Use a second wrench to hold the union (20) when you TORQUE the coupling nut.

(9) Put the bulkhead nut (35) and the new AIPC 29-11-43-01-040 PACKING (25) on the elbow (40).
(10) Install the elbow (40) on the filter assembly (30), as follows:
(a) Turn the elbow until the packing (25) is against the filter assembly (30).

NOTE: The elbow must point forward and be in the horizontal position.

(b) Turn the bulkhead nut (35) until it is against the filter assembly (30).
(c) TORQUE the bulkhead nut (35) to between 2.26 and 2.03 m.daN (16.67 and 14.97 lbf.ft )

NOTE: Use a second wrench to hold the elbow (40) when you TORQUE the bulkhead nut (35) .

(11) Attach the lower case drain hose (45) to the elbow (40).
(12) TORQUE the coupling nut on the lower case drain hose (45) to between 245 and 215 lbf.in (2.77 and 2.43 m.daN )

NOTE: Use a second WRENCH - TORQUE to hold the elbow (40) when you torque the coupling nut on the hose.

Subtask 29-11-43-710-052-A ** ON A/C NOT FOR ALL

B. Operational Test
(1) Do an operational test of the Green hydraulic system (Ref. AMM TASK 29-11-00-710-001).
(2) During the dry motoring make sure that there is no leak from the case drain filter.

5. Close-up
Subtask 29-11-43-942-052-A ** ON A/C NOT FOR ALL

A. Remove the safety precautions
(1) Remove the WARNING NOTICE(S).
(2) Remove the container.
(3) Make sure that the work area is clean and clear of tools and other items.

Subtask 29-11-43-410-054-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Close the left fan-cowl door 437AL (Ref. AMM TASK 71-13-00-410-040).
(2) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 00:16:09 UTC