Installation of the Lubrication Unit [CFMI]

TASK 79-21-10-400-001-A
Installation of the Lubrication Unit

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 51 and 47 lbf.in (0.58 and 0.53 m.daN )
No specific	Torque wrench: range to between 75 and 65 lbf.in (0.85 and 0.73 m.daN )
No specific	Torque wrench: range to between 85 and 75 lbf.in (0.96 and 0.85 m.daN )
No specific	Torque wrench: range to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )
No specific	Torque wrench: range to between 190 and 170 lbf.in (2.15 and 1.92 m.daN )
No specific	Torque wrench: range to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )
No specific	Torque wrench: range to between 550 and 450 lbf.in (6.22 and 5.09 m.daN )
No specific	Torque wrench: range to between 770 and 650 lbf.in (8.70 and 7.35 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	graphite grease
(Material No.CP2442)	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
130	GASKETS	AIPC 79-21-10-01-020
10	O-RING	AIPC 79-21-10-01-050
20	O-RING	AIPC 79-21-10-01-060
170	O-RING	AIPC 79-21-10-01-220
180	O-RING	AIPC 79-21-10-01-240
190	O-RING	AIPC 79-21-10-01-260

E. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-710-006-A	Minimum Idle Check
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
Lubrication Unit

3. Job Set-up
Subtask 79-21-10-860-051-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 79-21-10-010-055-A ** ON A/C NOT FOR ALL

B. Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 79-21-10-420-054-A ** ON A/C NOT FOR ALL

A. Installation of the lubrication unit:

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

(1) Remove blanking plugs from disconnected line ends and from the lubrication unit.
(2) Lightly coat the new AIPC 79-21-10-01-220 O-RING (170), AIPC 79-21-10-01-240 O-RING (180) and AIPC 79-21-10-01-260 O-RING (190) with engine oil (Material No.CP2442) .
(3) Install the new O-rings (170), (180) and (190) on the nipples (140), (150) and (160).
(4) Install the nipples (140) and (150) in the housing assembly and screw in place.
(5) TORQUE the nipples to between 190 and 170 lbf.in (2.15 and 1.92 m.daN )

.
(6) Install the nipple (160) in the housing assembly and screw in place.
(7) TORQUE the nipple to between 75 and 65 lbf.in (0.85 and 0.73 m.daN )

.
(8) Lightly coat a new AIPC 79-21-10-01-050 O-RING (10) with engine oil (Material No.CP2442) and install in groove on lubrication unit.
(9) Lightly coat a new AIPC 79-21-10-01-060 O-RING (20) with engine oil (Material No.CP2442) and install in drive shaft groove.
(10) Position lubrication unit relative to accessory gearbox housing and in line with locating dowel on housing. Install unit carefully into the housing to avoid damaging or dislodging O-ring. Seat unit in housing.
(11) Install clamp (90) on mating flanges. Apply a thin layer of graphite grease (Material No.CP2101) to the threads of the nut. TORQUE the nut to between 85 and 75 lbf.in (0.96 and 0.85 m.daN )

.
(12) Connect the 2 hoses to the oil differential pressure switch. TORQUE the couplings to between 110 and 90 lbf.in (1.24 and 1.02 m.daN )

.
(13) Install oil scavenge tubes (80), (70), (60), (50), oil return tube (100) and oil supply tube (120) as follows:

NOTE: If difficulties occur when you install oil return tube (100), loosen the union nut and other end. TORQUE the union nut to between 770 and 650 lbf.in (8.70 and 7.35 m.daN )

(a) Check that mating faces are clean and in good surface condition.
(b) Check gaskets for condition if not serviceable replace AIPC 79-21-10-01-020 GASKETS (130).
(c) Lightly coat gaskets (130) with engine oil (Material No.CP2442) and install.
(d) Lightly coat bolts with graphite grease (Material No.CP2101) and install in each flange. TORQUE bolts to between 51 and 47 lbf.in (0.58 and 0.53 m.daN )

.
(14) Connect the oil supply tube (40) (to aft engine sump) as follows:
(a) Apply a thin layer of engine oil (Material No.CP2442) to the tube union nut.
(b) Connect the union nut to the related nipple.
(c) TORQUE the union nut to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )

.
(15) Connect the oil supply tubes (30) (to AGB and TGB) and (110) (to forward sump) as follows:
(a) Apply a thin layer of engine oil (Material No.CP2442) to the tube union nuts.
(b) Connect the union nuts to the related nipples.
(c) TORQUE the union nuts to between 550 and 450 lbf.in (6.22 and 5.09 m.daN )

.
(16) Connect the electrical connector 4004ENA. Tighten the connector fingertight plus one-eight turn.

Subtask 79-21-10-942-050-A ** ON A/C NOT FOR ALL

B. Remove the WARNING NOTICE(S).

Subtask 79-21-10-710-050-A ** ON A/C NOT FOR ALL

C. Do an idle check (Ref. AMM TASK 71-00-00-710-006) and a check for leaks.

5. Close-up
Subtask 79-21-10-410-050-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 cowl doors: (Ref. AMM TASK 71-13-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR

[Rev.10 from 2021] 2026.04.01 03:38:02 UTC