Removal of the Engine Identification Connector [CFMB]

TASK 73-21-90-000-002-A
Removal of the Engine Identification Connector

ZONE: 400
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)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 31-36-00-740-015-A	Printout of the Engine/APU Hours and Cycles Stored in the Flight Data Interface and Management Unit (FDIMU)
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 73-21-60-740-006-A	Read the LRU Identification Report and the Thrust Reverser Shut-off Valve Status
Identification Connector

3. Job Set-up
Subtask 73-21-90-740-052-A ** ON A/C NOT FOR ALL

A. Do a print-out of the engine hours and cycles (Ref. AMM TASK 31-36-00-740-006) or (Ref. AMM TASK 31-36-00-740-015) and of the LRU IDENTIFICATION page of the MCDU (Ref. AMM TASK 73-21-60-740-006) and keep the prints with the engine for follow-up.

NOTE: Some tasks will possibly not be applicable depending on whether a DMU or an FDIMU is installed on the aircraft.

Subtask 73-21-90-941-051-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 73-21-90-010-052-A ** ON A/C NOT FOR ALL

C. Open the fan cowl doors (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 73-21-90-020-051-B ** ON A/C NOT FOR ALL

A. Removal of the Identification Connector (Push-Pull Design)
(1) Remove the nut (50), the washer (60) and the bolt (40) which attach the terminal lug of identification connector to the metallic clamp holding the elastomer block (through which transit the electrical harnesses).
(2) Disconnect the connector from the J14 receptacle on the ECU.

[Rev.10 from 2021] 2026.04.01 13:05:52 UTC