Removal of the CJ11L Harness [CFMB]

TASK 73-21-50-000-025-A
Removal of the CJ11L Harness

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
This TASK is applicable for NON /P engines.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	CAP - BLANKING
No specific	AR	PLIERS - CONNECTOR, JAW, SOFT
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
CJ11L Harness (Only Applicable NON /P Engines) for SAC Engine

3. Job Set-up
Subtask 73-21-50-941-075-A ** ON A/C NOT FOR ALL

A. 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 73-21-50-010-095-A ** ON A/C NOT FOR ALL

B. 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

Subtask 73-21-50-040-106-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 73-21-50-010-107-A ** ON A/C NOT FOR ALL

D. Open the left thrust reverser door (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL
(2) FOR [1000EM2] (ENGINE-2)
461AL

4. Procedure
Subtask 73-21-50-020-063-A ** ON A/C NOT FOR ALL

A. Removal of the CJ11L Harness
(1) Disconnect the CJ11L harness from the VBV position sensor and from the RACSB position sensor (Channel A).
(2) Cut and remove the lockwire which safeties the CJ11L, CJ12L and CJ13 bulkhead connector nuts together. Then, disconnect the HJ11 harness connector from the CJ11L bulkhead connector (120) in the 6 o'clock junction box.

NOTE: Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.

(3) Remove the nut (130) which attaches the bulkhead connector (120) to the 6 o'clock junction box (Detail B).
(4) Remove the connector (120) from the 6 o'clock junction box.
(5) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(6) Remove parts which attach the CJ11L harness as follows:

REMOVE	FROM	NOTE
Bolt (20)	Clamp (10) on CJ11L harness and bracket (30) on the VBV fuel gear motor	At the 9 o'clock position (Detail E)
Bolt (50)	Clamp (40) on CJ11L harness and bracket (60) on the core engine	At the 8:30 o'clock position (Detail D)
Bolts (90) and (100)	Clamps (80), (110) on CJ11L harness and bracket (70) on the core engine	At the 7 o'clock position (Detail C)
Clamps (10), (40), (80) and (110)	CJ11L harness	(Detail C, D and E)

(7) Remove the CJ11L harness from the engine.

[Rev.10 from 2021] 2026.04.01 02:58:33 UTC