Installation of the Oil Pressure Pump and Filter Assembly [IAE]

TASK 79-21-41-400-010-A
Installation of the Oil Pressure Pump and Filter Assembly

WARNING: DO NOT LET ENGINE OIL STAY ON YOUR SKIN FOR A LONG TIME. FLUSH THE OIL FROM YOUR SKIN WITH WATER. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY.

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** 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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 95 and 85 lbf.in (1.07 and 0.96 m.daN )
No specific	Torque wrench: range to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V10-077)	lubricant (engine oil)

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
13	PACKING	AIPC 72-60-21-80-080
9	PACKING	AIPC 79-21-41-80-030
4	PACKING	AIPC 79-21-41-80-060
2	PACKINGS	AIPC 79-21-41-80-070
11	PACKINGS	AIPC 79-21-41-80-080

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-79-610-011-A	Check Oil Level and Replenish
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 70-23-13-911-010-A	Procedures for the Installation of Preformed Packings
TASK 71-00-00-710-012-B	Test No.3 : Idle Leak Check
TASK 71-00-00-710-045-A	Test No.1 : Dry Motor Leak Check
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 79-21-44-400-010-A	Installation of the Pressure Oil Filter Element
Crank Cover
Oil Pressure Pump and Filter Assembly

3. Job Set-up
Subtask 79-21-41-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 79-21-41-010-051-A ** ON A/C NOT FOR ALL

B. Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-010)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 79-21-41-020-051-A ** ON A/C NOT FOR ALL

A. Remove all covers/caps/plugs from the openings.
(1) Remove the crank cover
(a) Remove the two nuts (16) and the washers (15) that attach the crank cover (14) to the gearbox (18).
(b) Remove the crank cover (14).
(c) Discard the packing (13).

Subtask 79-21-41-420-050-A ** ON A/C NOT FOR ALL

B. Install the sleeve

Oil Pressure Pump and Filter Assembly ** ON A/C NOT FOR ALL

(1) Install four new AIPC 79-21-41-80-070 PACKINGS (2) (Ref. AMM TASK 70-23-13-911-010) on to the two ends of the sleeve (3).
(2) Install one end of the sleeve (3) in to the seat adjacent to the mounting flange of the oil pressure pump.
(3) Install the suction strainer

Oil Pressure Pump and Filter Assembly ** ON A/C NOT FOR ALL

(a) Install two new AIPC 79-21-41-80-080 PACKINGS (11) (Ref. AMM TASK 70-23-13-911-010) on to the suction strainer (12).
(b) Install the suction strainer (12) in to the seat adjacent to the mounting flange of the oil pressure pump.
(4) Install the oil pressure pump and filter assembly

Oil Pressure Pump and Filter Assembly ** ON A/C NOT FOR ALL

(a) If you install a new oil pressure pump and filter assembly, install a new oil filter (Ref. AMM TASK 79-21-44-400-010).

NOTE: Spare oil pressure pump and filter assemblies are delivered without filter element.

(b) Install a new AIPC 79-21-41-80-060 PACKING (4) (Ref. AMM TASK 70-23-13-911-010) on to the flange of the oil pressure pump (10).
(c) Apply V10-077lubricant (engine oil), to the oil pump seat on the gearbox casing.
(d) Install an applicable wrench on to the starter idler gear.

NOTE: Use the wrench to turn the gear train of the gearbox to engage the gear of the oil pressure pump with the oil pressure pump drive gear.

(e) Install the oil pressure pump and filter assembly (10) on to the front flange of the gearbox.
(f) Make sure that the sleeve (3) and the suction strainer (12) engage with their seats on the oil pressure pump (10).
(g) Engage the gear of the oil pressure pump (10) with the oil pressure pump drive gear.
(h) Install the six washers (5) and the nuts (6) that attach the oil pressure pump and filter assembly (10) to the gearbox casing.
(i) TORQUE the nuts (6) to between 95 and 85 lbf.in (1.07 and 0.96 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(j) Remove the wrench from the starter idler gear.
(5) Connect the ACOC oil supply tube

Oil Pressure Pump and Filter Assembly ** ON A/C NOT FOR ALL

(a) Install a new AIPC 79-21-41-80-030 PACKING (9) (Ref. AMM TASK 70-23-13-911-010) on to the flange of the tube (8).
(b) Attach the tube (8) to the oil pressure pump (10) with the three bolts (7).
(c) TORQUE the bolts (7) to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(6) Install the crank cover

Crank Cover ** ON A/C NOT FOR ALL

(a) Install a new AIPC 72-60-21-80-080 PACKING (13) (Ref. AMM TASK 70-23-13-911-010) on to the flange of the crank cover (14).
(b) Apply V10-077lubricant (engine oil) to the crank cover seat on the gearbox casing.
(c) Install the crank cover (14) on to the gearbox and align it with the studs.
(d) Install the two washers (15) and the nuts (16).
(e) TORQUE the nuts (16) to between 95 and 85 lbf.in (1.07 and 0.96 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

Subtask 79-21-41-612-050-A ** ON A/C NOT FOR ALL

C. Fill the oil tank (Ref. AMM TASK 12-13-79-610-011).

5. Close-up
Subtask 79-21-41-410-050-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) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(3) Remove the WARNING NOTICE(S).

Subtask 79-21-41-790-050-B ** ON A/C NOT FOR ALL

B. Do an idle leak check (Ref. AMM TASK 71-00-00-710-012) or a dry motor leak check (Ref. AMM TASK 71-00-00-710-045).

[Rev.10 from 2021] 2026.04.01 03:40:12 UTC