Replacement of Assembly Cap, Adapter and/or Packing [CFML]

TASK 79-11-05-960-801-A
Replacement of Assembly Cap, Adapter and/or Packing

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

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

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 1M(3 FT)
No specific	AR	CAP - PROTECTION
No specific	1	CONTAINER 20L (5 USGAL)
No specific	AR	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 35 and 32 lbf.in (0.40 and 0.36 m.daN )
No specific	Torque wrench: range to between 300 and 262 lbf.in (3.39 and 2.96 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2442)	engine oil

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
7	O-RING	EIPC 79-11-05-15-060
8	SCUPPER GASKET	EIPC 79-11-05-15-070
11	O-RING	EIPC 79-11-05-15-100

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-79-610-808-A	Draining of the Oil Tank
TASK 71-00-00-710-815-A	Idle Leak Check
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
Assembly Cap, Adapter and/or Packing

3. Job Set-up
Subtask 79-11-05-941-054-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put WARNING NOTICE(S) in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 79-11-05-010-054-A

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.

4. Procedure
Subtask 79-11-05-960-051-A

A. Replacement of Assembly Cap, Adapter and/or Packing

WARNING: USE PERSONAL PROTECTION EQUIPMENT. USE THE ENGINE OIL IN A WELL-VENTILATED AREA. ENGINE OIL IS TOXIC.

(1) Put a CONTAINER 20L (5 USGAL) below the oil tank (1).
(2) Drain the oil tank (1) (Ref. AMM TASK 12-13-79-610-808).
(3) Removal of cap assembly (2) and adapter assembly (9):
(a) Removal of the cap assembly (2).
1 Disconnection of the drain tube (4) from the cap assembly (2).
a Loosen the coupling nut (5) to disconnect the drain tube (4) from the nipple (3) of the cap assembly (2).
2 Loosen and remove the two screws (6) that attach the cap assembly (2) and the adapter assembly (9) to the oil tank (1).
3 Carefully remove the cap assembly (2) from the adapter assembly (9).
4 Disconnect the drain tube (4).
5 Remove and discard the O-ring (7) from the grooves of the cap assembly (2).
6 Remove and discard the scupper gasket (8) from the cap assembly (2).
(b) Removal of the adapter assembly (9):
1 Remove the adapter insulator (10) from top of the adapter assembly (9).
2 Remove the adapter assembly (9) from the oil tank (1).
3 Remove and discard the O-ring (11) from the groove of the adapter assembly (9).
(c) Install the COVER - PROTECTION and CAP - PROTECTION on all the open ports, tubes and hoses.
(4) Installation of cap assembly (2) and adapter assembly (9):
(a) Remove all COVER - PROTECTION and CAP - PROTECTION from openings, tubes and hoses.
(b) Make sure that all the mating faces are clean and clear of unwanted materials.
(c) Installation of the adapter assembly (9):
1 Install the new EIPC 79-11-05-15-100 O-RING (11) (11) in the grooves of the adapter assembly (9)
2 Install the adapter assembly (9) in correct position on the oil tank (1).
3 Install the adapter insulator (10) on top of the adapter assembly (9).
(d) Installation of the cap assembly (2).
1 Lubricate the threads of the two screws (6), new EIPC 79-11-05-15-060 O-RING (7), new EIPC 79-11-05-15-070 SCUPPER GASKET (8) and threads of the nipple (3) with the engine oil (Material No.CP2442) .
2 Install the new scupper gasket (8) on the cap assembly (2).
3 Install the new O-ring (7) in the grooves of the cap assembly (2).
4 Install the cap assembly (2) in correct position on the adapter assembly (9).
5 Install the two screws (6) to attach the cap assembly (2) and the adapter assembly (9) to the oil tank (1).
6 TORQUE the two screws (6) to between 35 and 32 lbf.in (0.40 and 0.36 m.daN )

.
7 Connection of the drain tube (4) to the cap assembly (2):
a Engage the drain tube (4) to the nipple (3) of the cap assembly (2).
b TORQUE the coupling nut (5) to between 300 and 262 lbf.in (3.39 and 2.96 m.daN )

.
(5) Remove the CONTAINER 20L (5 USGAL) kept below the oil tank (1).

Subtask 79-11-05-710-052-A

B. Test(s)
(1) Do the idle leak check (Ref. AMM TASK 71-00-00-710-815).

5. Close-up
Subtask 79-11-05-410-053-A

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 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:42:53 UTC