Removal of the Engine Surface Air Cooling Oil Cooler (SACOC) [CFML]

TASK 79-21-30-000-802-A
Removal of the Engine Surface Air Cooling Oil Cooler (SACOC)

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.

FIN: 6002EM

1. Reason for the Job
This task gives the procedure for the removal of left and right SACOC halves. The two parts of the SACOC can be removed independently.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	AR	CAP - PROTECTION
No specific	2	CONTAINER 5 L (1.32 USGAL)
No specific	AR	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 78-30-00-040-809-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-36-00-010-806-A	Opening of the Thrust Reverser Cowl Doors
Engine Surface Air Cooling Oil Cooler (6002EM)

3. Job Set-up
Subtask 79-21-30-941-055-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, and
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 79-21-30-010-059-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 2M (6 FT) in position.

Subtask 79-21-30-040-052-A

C. Deactivation of the Thrust Reverser System for Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-809).

Subtask 79-21-30-010-060-A

D. Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-806):
(1) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
(2) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR

4. Procedure
Subtask 79-21-30-020-053-A

A. Removal of the Engine SACOC (left) (1)
(1) Put a CONTAINER 5 L (1.32 USGAL) below all the tube openings and the engine SACOC (left) (1).
(2) Disconnection of the oil tube (3) from the engine SACOC (left) (1):
(a) Remove the four bolts (4) from the oil tube (3).
(b) Disconnect the oil tube (3) from the engine SACOC (left) (1).
(c) Remove and discard the gasket (5).
(3) Disconnection of the oil tube (6) from the engine SACOC (left) (1):
(a) Remove the four bolts (7) from the oil tube (6).
(b) Disconnect the oil tube (6) from the engine SACOC (left) (1).
(c) Remove and discard the gasket (8).
(4) Removal of the engine SACOC (left) (1):

CAUTION: MAKE SURE THAT YOU HOLD THE ENGINE SURFACE AIR-COOLING OIL-COOLER (SACOC) DURING THE REMOVAL OR THE INSTALLATION. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO EQUIPMENT CAN OCCUR.

(a) Remove the two screws (17) that attach the bracket (18) to the engine.
(b) Remove the eight bolts (9) that attach the engine SACOC (left) (1) to the engine.
(c) Remove the engine SACOC (left) (1) and the bracket (18) from the engine.
(5) Install COVER - PROTECTION and CAP - PROTECTION on all the open ports, open tubes, open hoses and connectors.

Subtask 79-21-30-020-054-A

B. Removal of the Engine SACOC (right) (2)
(1) Put a CONTAINER 5 L (1.32 USGAL) below all the tube openings and the engine SACOC (right) (2).
(2) Disconnection of the oil tube (10) from the engine SACOC (right) (2):
(a) Remove the four bolts (11) from the oil tube (10).
(b) Disconnect the oil tube (10) from the engine SACOC (right) (2).
(c) Remove and discard the gasket (12).
(3) Disconnection of the oil tube (13) from the engine SACOC (right) (2):
(a) Remove the four bolts (14) from the oil tube (13).
(b) Disconnect the oil tube (13) from the engine SACOC (right) (2).
(c) Remove and discard the gasket (15).
(4) Removal of the engine SACOC (right) (2):

CAUTION: MAKE SURE THAT YOU HOLD THE ENGINE SURFACE AIR-COOLING OIL-COOLER (SACOC) DURING THE REMOVAL OR THE INSTALLATION. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO EQUIPMENT CAN OCCUR.

(a) Remove the two screws (17) that attach the bracket (18) to the engine.
(b) Remove the eight bolts (16) that attach the engine SACOC (right) (2) to the engine.
(c) Remove the engine SACOC (right) (2) and the bracket (18) from the engine.
(5) Install COVER - PROTECTION and CAP - PROTECTION on all the open ports, open tubes, open hoses and connectors.
(6) Remove the engine SACOC (left) (1) following the task above.

[Rev.10 from 2021] 2026.04.01 03:43:13 UTC