Removal of the Forward Fan Cowl Door Hold Open Rods (HOR) [PW11]

TASK 71-13-08-000-801-A
Removal of the Forward Fan Cowl Door Hold Open Rods (HOR)

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: 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: DO NOT REMOVE THE FORWARD AND AFT HOLD-OPEN RODS AT THE SAME TIME. YOU MUST KEEP ONE HOLD-OPEN ROD IN POSITION. IF YOU DO NOT OBEY THIS WARNING, THE FAN COWL DOOR CAN CLOSE QUICKLY AND CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE COMPONENTS.

WARNING: WHEN YOU REMOVE A HOLD-OPEN ROD, YOU MUST IMMEDIATELY INSTALL A REPLACEMENT. IF YOU DO NOT OBEY THIS WARNING, INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.

ZONE: 400
FIN: 1421KM ** ON A/C NOT FOR ALL
FIN: 1422KM ** 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 1M (3 FT)-ADJUSTABLE
No specific	AR	COVER - PROTECTION

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
Forward Fan Cowl Door Hold Open Rod (HOR)

3. Job Set-up
Subtask 71-13-08-941-050-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).

Subtask 71-13-08-010-050-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 an ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE in position.

4. Procedure
Subtask 71-13-08-020-050-A ** ON A/C NOT FOR ALL

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.

A. Removal of the Forward Fan Cowl Door Hold Open Rods (HOR)

NOTE: There is one forward HOR on each fan cowl door. This procedure is for the removal of the forward HOR from the left fan cowl door. The procedure for the removal of the forward HOR from the right fan cowl door is the same.

(1) Remove the nut (9), washer (8), bushing (7) and bolt (6) that attach the forward HOR (1) to the engine case.
(2) Remove the nut (5), the two washers (4), the bushing (3) and the bolt (2) that attach the forward HOR (1) to the fan cowl door.
(3) Remove the forward HOR (1) from the fan cowl door and the engine case.
(4) Installation of protection covers

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

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

[Rev.10 from 2021] 2026.04.01 02:32:23 UTC