Installation of the AC Generator Control-Harness

TASK 24-21-61-400-803-A
Installation of the AC Generator Control-Harness

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

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

CAUTION: DO NOT BEND OR TWIST THE HARNESS TOO MUCH. IF YOU DO, DAMAGE TO THE HARNESS CAN OCCUR.

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	COVER - PROTECTION
No specific	1	PLIERS - JAWED, SOFT
No specific	Torque wrench: range to between 34 and 31 lbf.in (0.38 and 0.35 m.daN )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 71-00-00-720-811-A	Test No. 3A - Idle Power Test
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
AC Generator Control Harness

3. Job Set-up
Subtask 24-21-61-941-052-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 24-21-61-010-053-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR

Subtask 24-21-61-040-051-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser System for Ground Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make sure that you did the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 24-21-61-010-054-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that the thrust-reverser cowl-doors are open (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR
(2) Installation of the engine protection covers

CAUTION: INSTALL PROTECTION COVERS ON ALL THE OPENINGS IMMEDIATELY TO PREVENT DAMAGE TO THE ENGINE.

(a) Make sure that all the necessary COVER - PROTECTION are installed to prevent damage to the engine.

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 24-21-61-420-051-A ** ON A/C NOT FOR ALL

A. Connection the AC Generator Control-Harness
(1) Connect the harness connectors to the transmitter receptacles:
(a) Examine, align and engage the connector.
(b) Push lightly on the connector in while you tighten the coupling ring.
(c) Use the PLIERS - JAWED, SOFT and tighten the connector against the receptacle.
(d) Make sure that you can feel the ratchet feature.
(e) While you tighten, push the connector in and from side to side.
(f) Tighten the connector until the PLIERS - JAWED, SOFT slip on the connector ring.
(2) Connect the harness connectors to the engine and pylon:
(a) Connect the connector (P70) to the Low Oil Pressure (LOP) switch receptacle (J70).
(b) Connect the connectors (4000XU-A), (4000XU-B) and (4000XU-C) to the Integrated Generator (IDG) receptacles.
(c) Connect the connectors (401VC), (404VC) and (405VC) to the pylon receptacles.
(d) Connect the connector (P60) to the hydraulic pump receptacle (J60).
(3) Attach the harness (1) to the engine with the clamps as follows:
(a) Start from the middle of the harness (1).
(b) Attach the harness (1) to the brackets with the nine bolts (2), washers (3) and clamps (4).
(c) Make sure that the tension in the harness (1) is sufficient to prevent loose or tight conditions.
(d) TORQUE the bolts (2) to between 34 and 31 lbf.in (0.38 and 0.35 m.daN )

.
(4) Examine the assembly for foreign objects, damage and correct assembly.

Subtask 24-21-61-410-051-A ** ON A/C NOT FOR ALL

B. Close Access

CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.

(1) Remove all the COVER - PROTECTION to prevent damage to the engine.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the thrust-reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR

Subtask 24-21-61-440-050-A ** ON A/C NOT FOR ALL

C. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 24-21-61-410-052-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR

Subtask 24-21-61-710-051-A ** ON A/C NOT FOR ALL

E. Do an Idle Power Test (Ref. AMM TASK 71-00-00-720-811).
(1) Make sure that the IDG 1 (2) operates correctly.
(a) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
(b) On the ECAM control panel, push the ELEC key to get the ELEC page:

Make sure that the voltage of the IDG is 115VAC
Make sure that the frequency of the IDG is 400Hz + or - 5Hz.

5. Close-up
Subtask 24-21-61-942-051-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration
(1) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.03.31 23:21:49 UTC