Removal of the High (N2) Rotor-Turning Equipment [PW11]

TASK 72-00-00-000-805-A
Removal of the High (N2) Rotor-Turning Equipment

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE 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.

ZONE: 400

1. Reason for the Job
Use this procedure to remove the electric rotator or the 9/16 inch socket wrench from the gearbox drive adapter.
For more information about the main gearbox, refer to 72-00-00-00U.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	COVER - PROTECTION
No specific	1	WRENCH - SOCKET
No specific	Torque wrench: range to between 95 and 78 lbf.in (1.07 and 0.88 m.daN )
PWA111443	1	ROTATOR ADAPTER - ENGINE ASSY, BORESCOPE
PWA115120	1	KIT, CONTROL

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P03-001)	PWA 521 engine oil
(Material No.P04-010)	MIL-G-21164 grease

C. Work Zones and Access Panels

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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
4	PACKING	EIPC 72-61-01-02-290

E. Referenced Information

REFERENCE	DESIGNATION
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 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
PWA 115120 Electric Rotator
Removal of the Rotator Adapter
Manual Crank Cover

3. Job Set-up
Subtask 72-00-00-941-216-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 72-00-00-010-294-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (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.
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 72-00-00-040-145-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser for 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) Do the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 72-00-00-010-295-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the thrust reverser cowl-doors (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.

4. Procedure
Subtask 72-00-00-080-075-A ** ON A/C NOT FOR ALL

A. Removal of the High (N2) Rotor-Turning Equipment

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

(1) Removal of the protection covers:

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

(a) Make sure that you remove the COVER - PROTECTION as necessary to prevent damage to the engine.
(2) If the PWA115120 KIT, CONTROL and the PWA111443 ROTATOR ADAPTER - ENGINE ASSY, BORESCOPE are not used and the WRENCH - SOCKET is used as an alternative tool, do steps 4.A.(4) thru 4.A.(7).
(3) Remove the PWA115120 KIT, CONTROL and the PWA111443 ROTATOR ADAPTER - ENGINE ASSY, BORESCOPE as follows:

PWA 115120 Electric Rotator ** ON A/C NOT FOR ALL

Removal of the Rotator Adapter ** ON A/C NOT FOR ALL

(a) Turn off the power supply to the detail control unit.
(b) Disconnect the detail drive unit cable, detail pedal cable, detail digital pendant cable and AC power cable.
(c) Remove the two detail bolts and the washers from the PWA111443 ROTATOR ADAPTER - ENGINE ASSY, BORESCOPE and the drive motor.
(d) Loosen the two captive bolts and remove the PWA111443 ROTATOR ADAPTER - ENGINE ASSY, BORESCOPE from the gearbox crank pad.
(4) Install the manual crank cover (1) as follows:

Manual Crank Cover ** ON A/C NOT FOR ALL

(a) Apply the PWA 521 engine oil (Material No.P03-001) on the new EIPC 72-61-01-02-290 PACKING (4).
(b) Install the packing (4) on the crank cover (1).
(c) Apply the MIL-G-21164 grease (Material No.P04-010) on the two bolts (3).
(d) Install the crank cover (1) with the two bolts (3) and the two washers (2).
(e) TORQUE the two bolts (3) to between 95 and 78 lbf.in (1.07 and 0.88 m.daN )

.
(5) Do a leak check to make sure that the manual crank cover (1) is installed correctly. Refer to test No. 3A (Ref. AMM TASK 71-00-00-720-811).
(6) Examine the assembly for foreign objects, damage and correct assembly.
(7) Installation of the protection covers:

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

(a) Make sure that you install the COVER - PROTECTION as necessary to prevent damage to the engine.

[Rev.10 from 2021] 2026.04.01 12:57:05 UTC