Installation of the Oil Debris Monitoring System (ODMS) Harness [CFML]

TASK 79-36-15-400-801-A
Installation of the Oil Debris Monitoring System (ODMS) Harness

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: 4912KS

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 46.5 and 42.0 lbf.in (0.53 and 0.47 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)
TASK 79-36-00-740-801-A	Oil Debris Reset (Menu Mode)
Oil Debris Monitoring System (ODMS) Harness

3. Job Set-up
Subtask 79-36-15-941-051-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) Make sure that the WARNING NOTICE(S) is 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) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).

Subtask 79-36-15-010-051-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

4. Procedure

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

Subtask 79-36-15-420-050-A

A. Installation of the Oil Debris Monitoring System (ODMS) Harness
(1) Remove all the COVER - PROTECTION and CAP - PROTECTION on the openings, tubes, hoses and connectors.
(2) Make sure that the mating surfaces are clean and clear of unwanted materials.
(3) Install the ODMS harness (1) in the correct position on the clip (10) along its routing.
(4) Install the bolt (4) on the clamp (5) to attach the ODMS harness (1) to the bracket (6) and tighten the bolt with your hand.
(5) TORQUE the bolt (4) to between 46.5 and 42.0 lbf.in (0.53 and 0.47 m.daN )

.
(6) Install the bolt (7) on the clamp (8) to attach the ODMS harness (1) to the bracket (9) and tighten it with your hand.
(7) TORQUE the bolt (7) to between 46.5 and 42.0 lbf.in (0.53 and 0.47 m.daN )

.
(8) Connection of the ODMS harness (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 ODMS harness (1) to the ODMS unit receptacle (3).
(b) Connect the ODMS harness (1) to the ODMS sensor receptacle (2).

5. Close-up
Subtask 79-36-15-710-050-A

A. Test(s)
(1) Do these tests
(a) Oil debris reset (menu mode) (Ref. AMM TASK 79-36-00-740-801).
(b) FADEC test (menu mode) (Ref. AMM TASK 73-29-00-710-802).

Subtask 79-36-15-410-050-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 WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:43:53 UTC