Installation of the Oil Debris Monitoring Unit [CFML]

TASK 79-36-20-400-801-A
Installation of the Oil Debris Monitoring Unit

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.

FIN: 4176KS

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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 92.4 and 84.1 lbf.in (1.04 and 0.95 m.daN )

B. 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

C. Referenced Information

REFERENCE	DESIGNATION
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
TASK 73-29-00-710-802-A	FADEC Test (Menu Mode)
Oil Debris Monitoring Unit

3. Job Set-up
Subtask 79-36-20-941-052-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 79-36-20-010-050-A

B. Get Access
(1) Make sure that the fan cowl doors are open (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) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

4. Procedure
Subtask 79-36-20-420-050-A

A. Installation of the Oil Debris Monitoring Unit (1):
(1) Remove all the COVER - PROTECTION and CAP - PROTECTION from openings, tubes, hoses and connectors.
(2) Make sure that the mating surfaces are clean and clear of unwanted materials.
(3) Install the oil debris monitoring unit (1) on the mounting bracket (6).
(4) Install the four washers (5) and the four nuts (4) to attach the oil debris monitoring unit (1) on the mounting bracket (6) and tighten them with your hand.
(5) TORQUE the four nuts (4) to between 92.4 and 84.1 lbf.in (1.04 and 0.95 m.daN )

.
(6) Connection of the harness electrical connectors to the applicable receptacles of the oil debris monitoring unit (1):

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(a) Connect the HJ6B harness electrical connector (3) to the socket (8) of the oil debris monitoring unit (1).
(b) Connect the oil debris monitoring harness electrical connector (2) to the socket (7) of the oil debris monitoring unit (1).
(c) Tighten the oil debris monitoring harness electrical connector (2) until you cannot see the color marks on the Socket (7) of the oil debris monitoring unit (1).

5. Close-up
Subtask 79-36-20-710-050-A

A. Do the FADEC test (menu mode) (Ref. AMM TASK 73-29-00-710-802).

Subtask 79-36-20-410-050-A

B. 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 03:43:55 UTC