Installation of the J15 Harness [CFMI]

TASK 73-21-50-400-047-A
Installation of the J15 Harness

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	PLIERS - JAWED, SOFT
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	graphite grease

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 73-29-00-710-040-A-02	Operational Test of the FADEC on the Ground (with Engine non Motoring)
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
J15 Harness

3. Job Set-up
Subtask 73-21-50-860-084-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 73-21-50-010-091-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(4) Make sure that the thrust reverser doors are open (Ref. AMM TASK 78-36-00-010-040):
(5) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(6) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 73-21-50-040-075-A ** ON A/C NOT FOR ALL

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

4. Procedure
Subtask 73-21-50-420-062-A ** ON A/C NOT FOR ALL

A. Installation of the J15 Harness

CAUTION: CAREFULLY ALIGN THE CONNECTOR KEY WITH THE RECEPTACLE KEYWAY BEFORE YOU CONNECT THEM TO PREVENT DAMAGE TO THE CONNECTORS.

CAUTION: DISTRIBUTE THE SLACK ALL ALONG THE CABLE. DO NOT LET THE CABLE SHEATH TOUCH THE ADJACENT COMPONENTS. DO NOT TWIST THE SHEATH BY MORE THAN 180 DEGREES.

(1) Install the electrical harness J15 on the fan frame. Remove the caps from the connectors.
(2) Connect the J15 harness to the Electronic Control Unit (ECU) and the bleed bias transducer.
(a) Engage the connector in the related receptacle, and turn the knurled coupling ring by hand until full engagement.
(b) Tighten the coupling ring with PLIERS - JAWED, SOFT.
(c) Make sure that the connector is fully engaged and does not move.
(d) If necessary, do the above steps again.
(3) Apply a thin layer of graphite grease (Material No.CP2101) to the bolt threads before installation.
(4) Install the loop clamp (83), the bolt (82) and the nut (84) which attach the J15 harness to the cover plate of the clamp assembly at 5:00 o'clock location (detail A). Tighten the bolt by hand.
(5) Install the J15 harness in the clip on the bracket at the 4:30 o'clock location on flange E (detail B), under the ECU.

PRE SB CFM56-5 72-443
(6) Install the loop clamp (229) and the bolt (230) which attach the J15 harness forward lead to the bracket at the 4:00 o'clock location on flange E (detail C). Tighten the bolt by hand.
(7) Install the loop clamp (232), the bolt (231) and the nut (233) which attach the J15 harness aft lead to the bracket at the 4:00 o'clock location of flange G (detail C). Tighten the bolt by hand.

POST SB CFM56-5 72-443
(8) Install the loop clamps (229), (232), the spacer (234) and the bolt (230) which attach the J15 harness (forward and aft lead) to the bracket at the 4:00 o'clock location on flange E (detail C). Tighten the bolt by hand.
END OF SB CFM56-5 72-443
(9) Make sure that the harness is not stressed. TORQUE all bolts to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )

Subtask 73-21-50-942-080-A ** ON A/C NOT FOR ALL

B. Remove the WARNING NOTICE(S).

Subtask 73-21-50-861-062-A ** ON A/C NOT FOR ALL

C. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 73-21-50-710-062-A ** ON A/C NOT FOR ALL

D. Do a FADEC ground test with engine non motoring (Ref. AMM TASK 73-29-00-710-040).

5. Close-up
Subtask 73-21-50-862-062-A ** ON A/C NOT FOR ALL

A. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 73-21-50-410-070-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 73-21-50-440-062-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 73-21-50-410-078-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR

[Rev.10 from 2021] 2026.04.01 02:56:38 UTC