Installation of the Generator Power Harness 238W0903 [CFMI]

TASK 71-51-44-400-001-A
Installation of the Generator Power Harness 238W0903

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	ACCESS PLATFORM 1M(3 FT)
No specific	1	GROUND AIR-SUPPLY UNIT(HIGH PRESSURE)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 14 and 12 lbf.ft (1.90 and 1.63 m.daN )
No specific	Torque wrench: range to between 22 and 20 lbf.in (0.25 and 0.23 m.daN )
No specific	Torque wrench: range to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )
No specific	Torque wrench: range to between 110 and 95 lbf.in (1.24 and 1.07 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP1041)	isopropyl alcohol
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

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

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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 70-60-00-910-042-A	Nacelle Standard Practices
TASK 71-00-00-710-003-A	Engine Automatic Start
TASK 71-00-00-710-028-A	Engine Shutdown
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
Upper Right Fan Zone Generator Power Harness
Lower Right Fan Zone Generator Power Harness

3. Job Set-up
Subtask 71-51-44-860-050-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).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

Subtask 71-51-44-010-051-A ** ON A/C NOT FOR ALL

B. Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 71-51-44-865-051-A ** ON A/C NOT FOR ALL

WARNING: OPEN THE PROBE HEATER CIRCUIT-BREAKERS 1DA1(2), 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3) BEFORE ENG1(2)FADEC A and EIU 1(2) C/B'S 2KS1 AND 2KS2. IF YOU DO NOT OBEY THIS SEQUENCE:

THE PROBES WILL BECOME TOO HOT.
THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.

C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
49VU	COM/CVR/SPLY	2RK	E14
49VU	COM/CVR/CTL	4RK	E13
121VU	RCDR/DFDR	7TU	K16
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
122VU	ANTI ICE/WINDOWS/R	4DG2	W14
122VU	ANTI ICE/WINDOWS/L	4DG1	X14
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/3/STATIC	5DA3	Z14
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03
FOR FIN: 1000EM1 (ENGINE1)
49VU	ENGINE/1/FIRE DET/LOOP A	7WD1	A06
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/IGN/ENG1/SYS A BAT	2JH1	P39
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B	2WE1	Q44
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A	1WE1	Q43
121VU	ENGINE/ENG1/FIRE DET/LOOP B	8WD1	Q38
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
122VU	ELEC/GCU/1	2XU1	T26
FOR FIN: 1000EM2 (ENGINE2)
49VU	ENGINE/2/FIRE DET/LOOP B	8WD2	A07
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/IGN/ENG2/SYS A BAT	2JH2	P40
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B	2WE2	Q42
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A	1WE2	Q41
121VU	ENGINE/ENG2/FADEC B	4KS2	Q40
121VU	ENGINE/ENG2/FIRE DET/LOOP A	7WD2	Q39
122VU	ELEC/GCU/2	2XU2	T27

4. Procedure
Subtask 71-51-44-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Generator Power Harness 238W09036

NOTE: Refer to the recommended procedure for the installation of the wire harness (Ref. AMM TASK 70-60-00-910-042).

(1) Remove the protective covers from the electrical connectors on the harness (5) and the pylon junction box.
(2) Make sure that all the electrical connections are clean and in the correct condition.
(3) Do not clean the contacts with abrasive material.
(4) Do a pin retention check of the sockets (Ref. AWM 20-44-14).
(5) Put the electrical harness (5) in position on the engine.
(6) Connect the electrical connector 400VC-A to the pylon junction box.
(a) Tighten the connector by hand until the colored marking is visible in the lock display (window).
(7) Put the harness (5) into the flip-lock clamps (10).
(8) Tighten the captive screws 1/4 turn clockwise to engage the cam nuts.
(9) Cleaning of the mating surfaces:

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

(a) Clean the mating surfaces of the ground cable terminals and the ground plate with isopropyl alcohol (Material No.CP1041) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(10) Attach the harness cables (5) to the ground plate with the bolt (15), the washer (20), the lockwasher (25) and the nut (30). Remove the tags.
(11) TORQUE the nut (30) to between 110 and 95 lbf.in (1.24 and 1.07 m.daN )

.
(12) Attach the ground cables (60), (65), (120) and (125) to the IDG terminals with the washers (55), the lockwashers (50), and the nuts (45).
(13) TORQUE the nuts (45) to between 14 and 12 lbf.ft (1.90 and 1.63 m.daN )

.
(14) Install the cover (40) on the IDG terminal with the screws (35).
(15) TORQUE the screws (35) to between 22 and 20 lbf.in (0.25 and 0.23 m.daN )

.
(16) Attach the bracket (85) to the line block (80) with the bolt (95), the washers (90) and (75), and nut (70).
(17) TORQUE the nut (70) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

.
(18) Attach the clamp (110) to the bracket (85) with the screw (105), the washer (100) and the nut (115).
(19) TORQUE the nut (115) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

.
(20) Examine the harness installation and make sure that all clamps and line blocks are installed correctly.

Subtask 71-51-44-760-050-A ** ON A/C NOT FOR ALL

B. Do an electrical bond resistance check as follows:

NOTE: The electrical bond resistance procedure that follows is applicable for the electrical harness ground cables.

(1) Put one lead of the ohmmeter on the ground cable terminal near the bolt (15).
(2) Put the other lead of the ohmmeter on the top surface of the bracket.
(3) The resistance measured between the ohmmeter leads must not be more than 0.001 ohm.
(4) If the resistance is more than 0.001 ohm, remove the applicable hardware and clean the mating surface again. Do this procedure until the resistance is less than 0.001 ohm.

Subtask 71-51-44-865-052-A ** ON A/C NOT FOR ALL

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
49VU	COM/CVR/SPLY	2RK	E14
49VU	COM/CVR/CTL	4RK	E13
121VU	RCDR/DFDR	7TU	K16
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
122VU	ANTI ICE/WINDOWS/R	4DG2	W14
122VU	ANTI ICE/WINDOWS/L	4DG1	X14
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/3/STATIC	5DA3	Z14
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03
FOR FIN: 1000EM1 (ENGINE1)
49VU	ENGINE/1/FIRE DET/LOOP A	7WD1	A06
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/IGN/ENG1/SYS A BAT	2JH1	P39
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B	2WE1	Q44
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A	1WE1	Q43
121VU	ENGINE/ENG1/FIRE DET/LOOP B	8WD1	Q38
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
122VU	ELEC/GCU/1	2XU1	T26
FOR FIN: 1000EM2 (ENGINE2)
49VU	ENGINE/2/FIRE DET/LOOP B	8WD2	A07
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/IGN/ENG2/SYS A BAT	2JH2	P40
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B	2WE2	Q42
121VU	ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A	1WE2	Q41
121VU	ENGINE/ENG2/FADEC B	4KS2	Q40
121VU	ENGINE/ENG2/FIRE DET/LOOP A	7WD2	Q39
122VU	ELEC/GCU/2	2XU2	T27

Subtask 71-51-44-861-050-A ** ON A/C NOT FOR ALL

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

Subtask 71-51-44-869-050-A ** ON A/C NOT FOR ALL

E. Aircraft Maintenance Configuration
(1) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(2) Pressurize the aircraft pneumatic system with a GROUND AIR-SUPPLY UNIT(HIGH PRESSURE) or through the APU.

Subtask 71-51-44-869-051-A ** ON A/C NOT FOR ALL

F. Check the voltage and frequency:
(1) Start the engine (Ref. AMM TASK 71-00-00-710-003). Let it become stable at the idle speed.
(2) On the ECAM control panel, get the ELEC page. On the lower display unit of the ECAM system:

make sure that the voltage and frequency are correct.

(3) Stop the engine (Ref. AMM TASK 71-00-00-710-028).

Subtask 71-51-44-869-052-A ** ON A/C NOT FOR ALL

G. Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).

5. Close-up
Subtask 71-51-44-862-050-A ** ON A/C NOT FOR ALL

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

Subtask 71-51-44-869-053-A ** ON A/C NOT FOR ALL

B. Depressurize the pneumatic system.

Subtask 71-51-44-410-050-A ** ON A/C NOT FOR ALL

C. 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 71-13-00-410-040):
(3) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(4) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(5) Remove the access platform(s).
(6) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 12:55:03 UTC