Removal of the Fan Cowl Door Hinge Beam [PW11]

TASK 71-13-01-000-801-A
Removal of the Fan Cowl Door Hinge Beam

WARNING: WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.

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.

ZONE: 400
FIN: 1453KM1 ** ON A/C NOT FOR ALL
FIN: 1453KM2 ** 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	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	COVER - PROTECTION
No specific	1	HAMMER - SLIDE, PULLER, STANDARD
No specific	1	PUNCH - FLAT-END
636GSE2006-901	1	FC HINGE BOLT THREAD PROTECTORS

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
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
Fan Cowl Hinge Beam Assembly
Fan-Cowl-Hinge Bolt-Thread-Protector

3. Job Set-up
Subtask 71-13-01-941-050-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).
(2) On panel 22VU, make sure that the ON legend of the MAN START pushbutton switch is off.
(3) Put the WARNING NOTICE(S) in position to tell persons not to operate the MAN START pushbutton switch.
(4) On panel 30VU, make sure that the ON legend of the APU BLEED pushbutton switch is off.
(5) Put the WARNING NOTICE(S) in position to tell persons not to operate the APU BLEED pushbutton switch.
(6) Make sure that no pneumatic ground cart is connected.

Subtask 71-13-01-010-050-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 the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

4. Procedure

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

Subtask 71-13-01-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Fan Cowl Hinge Beam

WARNING: MAKE SURE THAT THE FAN COWL DOOR IS SUFFICIENTLY SUPPORTED DURING REMOVAL OR INSTALLATION. THE FAN COWL DOOR WEIGHS APPROXIMATELY 100 LBS (45.5 KG). IF IT IS NOT SUFFICIENTLY SUPPORTED, INJURY TO PERSONNEL AND/OR DAMAGE TO THE COMPONENTS CAN OCCUR.

(1) Remove the nut (1) and the washer (2) from the hinge beam assembly (3) and the forward hinge on the left fan cowl door.
(2) Install the 636GSE2006-901 FC HINGE BOLT THREAD PROTECTORS on the thread of the bolt (4). Refer to the instructions of the manufacturer.
(3) Remove the bolt (4) from the hinge beam assembly (3) and the forward hinge on the left fan cowl door.
(a) If you cannot remove the bolt (4) easily from the hinge and hinge beam assembly (3), carefully use the PUNCH - FLAT-END and the HAMMER - SLIDE, PULLER, STANDARD to remove it.
(4) Remove the nut (1) and the washer (2) from the hinge beam assembly (3) and the forward hinge on the right fan cowl door.
(5) Install the 636GSE2006-901 FC HINGE BOLT THREAD PROTECTORS on the thread of the bolt (4). Refer to the instructions of the manufacturer.
(6) Remove the bolt (4) from the hinge beam assembly (3) and the forward hinge on the right fan cowl door.
(a) If you cannot remove the bolt (4) easily from the hinge and hinge beam assembly (3), carefully use the PUNCH - FLAT-END and the HAMMER - SLIDE, PULLER, STANDARD to remove it.
(7) Remove the hinge beam assembly (3) from between the engine and the pylon.
(8) Remove the 636GSE2006-901 FC HINGE BOLT THREAD PROTECTORS from the thread of the bolts (4). Refer to the instructions of the manufacturer.
(9) 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 02:32:16 UTC