Removal of the CJ11R Harness for SAC Engines [CFMB]

TASK 73-21-50-000-026-A
Removal of the CJ11R Harness for SAC Engines

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 SAC 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 72-23-00-000-027-A	Removal of the Fan Duct Panels
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
CJ11R Harness

3. Job Set-up
Subtask 73-21-50-941-076-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 73-21-50-010-096-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 73-21-50-040-107-A ** ON A/C NOT FOR ALL

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

Subtask 73-21-50-010-109-A ** ON A/C NOT FOR ALL

D. Open the right 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 73-21-50-020-064-A ** ON A/C NOT FOR ALL

A. Removal of the CJ11R Harness
(1) Remove the fan duct panel between struts No. 5 and No. 6 (Ref. AMM TASK 72-23-00-000-027).
(2) Disconnect the CJ11R harness from the T25 temperature sensor CH. A, the BSV switch CH. A (PRE CFMI SB 73-0114), the HPTACC valve position sensor CH. A, the LPTACC valve position sensor CH. A, and the VSV position sensor CH. A. Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.

NOTE: CFMI 5B SB 73-0114 deleted the BSV system.

(3) Disconnect the CJ12R harness from the T25 sensor CH. B. Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.
(4) Disconnect the HJ11 connector in the 6 o'clock junction box from the CJ11R. Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.
(5) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(6) Remove parts which attach the CJ11R wiring harness as follows:

REMOVE	FROM	NOTE
Bolt (130)	Bracket (120) on the fan frame	At the 3 o'clock position (Detail B)
Bolt (20)	Bracket (30) on the fan frame	At the 3:30 o'clock position (Detail C)
Bolt (90) Clamp (100) Bolt (70)	Bracket (110) on the fan frame Fan Frame	At the 4:15 o'clock position (Detail D) At the 4:30 o'clock position (section F-F)
Bolts (50) and (60) Clamp (40)	6 o'clock junction box	On the right-hand side of the 6 o'clock junction box (ALF) (Detail E)

(7) Disengage the CJ12R harness from its recess in the fan frame, at the 4:30 o'clock position to make the CJ11R harness free.
(8) Remove the CJ11R harness from the engine.

[Rev.10 from 2021] 2026.04.01 02:58:38 UTC