Installation of the Permanent Magnet Alternator (PMA) Stator [CFML]

TASK 73-21-40-400-802-A
Installation of the Permanent Magnet Alternator (PMA) Stator

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

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

FIN: 3040KS

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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 13 and 11 lbf.in (0.15 and 0.12 m.daN )
No specific	Torque wrench: range to between 123.9 and 112.1 lbf.in (1.40 and 1.27 m.daN )
956A3506G01	1	SET, GUIDE PINS / JACK SCREWS - PMA INSTALL/REMOVE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2442)	engine oil

C. Work Zones and Access Panels

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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
6	GASKET	EIPC 73-21-40-01-025

E. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 73-29-00-740-803-A	Idle Test (Menu Mode)
PMA Stator

3. Job Set-up
Subtask 73-21-40-941-058-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:

The ENG/MODE selector switch, and
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).

Subtask 73-21-40-010-060-A

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR

4. Procedure
Subtask 73-21-40-420-052-A

A. Installation of the PMA Stator
(1) Remove all the COVER - PROTECTION and CAP - PROTECTION from the openings, tubes, hoses and connectors.
(2) Make sure that the mating surfaces are clean and clear of unwanted materials.
(3) Lubricate the threads and the new parts.

WARNING: USE PERSONAL PROTECTION EQUIPMENT. USE THE ENGINE OIL IN A WELL-VENTILATED AREA. ENGINE OIL IS TOXIC.

(a) Lubricate the threads of the four 956A3506G01 SET, GUIDE PINS / JACK SCREWS - PMA INSTALL/REMOVE, the two bolts (10), the two bolts (9), the new EIPC 73-21-40-01-025 GASKET (6) with the engine oil (Material No.CP2442) .
(4) Install the new gasket (6) on the PMA stator (1):
(a) Install the two screws (7) that attach the gasket (6) to the PMA stator (1).
(b) TORQUE the two screws (7) to between 13 and 11 lbf.in (0.15 and 0.12 m.daN )

.
(5) Install the four 956A3506G01 SET, GUIDE PINS / JACK SCREWS - PMA INSTALL/REMOVE in the four bolts holes of the Accessory Gearbox (AGB) pad.
(6) Align the four bolt holes of the PMA stator (1) with the four 956A3506G01 SET, GUIDE PINS / JACK SCREWS - PMA INSTALL/REMOVE.
(7) Install the PMA stator (1) in the correct position on the AGB pad.
(8) Remove the two of the four 956A3506G01 SET, GUIDE PINS / JACK SCREWS - PMA INSTALL/REMOVE from the opposite position.
(9) Install the two bolts (9) and the two washers (8) on the PMA stator (1) and tighten them with your hand.
(10) Remove the other two 956A3506G01 SET, GUIDE PINS / JACK SCREWS - PMA INSTALL/REMOVE.
(11) Install the two bolts (10) and the two washers (11) on the PMA stator (1) and tighten them with your hand.
(12) TORQUE the two bolts (9) to between 123.9 and 112.1 lbf.in (1.40 and 1.27 m.daN )

.
(13) TORQUE the two bolts (10) to between 123.9 and 112.1 lbf.in (1.40 and 1.27 m.daN )

.
(14) Connection of the harness electrical connectors to the PMA stator (1):

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(a) Connect the HJ3B harness electrical connector (3) to the HJ3B harness receptacle (2).
(b) Connect the HJ3A harness electrical connector (4) to the HJ3A harness receptacle (5).

5. Close-up
Subtask 73-21-40-710-052-A

A. Test(s)
(1) Do the idle test (menu mode) (Ref. AMM TASK 73-29-00-740-803).

Subtask 73-21-40-410-056-A

B. 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 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 13:04:36 UTC