Removal of the Fan Cowl Aft Hold Open Rod (HOR) [PW11]

TASK 71-13-09-000-801-A
Removal of the Fan Cowl Aft Hold Open Rod (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: 1423KM ** ON A/C NOT FOR ALL
FIN: 1424KM ** 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
Fan Cowl Aft Hold Open Rod (HOR)

3. Job Set-up
Subtask 71-13-09-941-050-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 71-13-09-010-050-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

NOTE: There is one aft Hold Open Rod (HOR) on each fan cowl door. This procedure is for the removal of the aft HOR from the left fan cowl door. The procedure for the removal of the aft HOR from the right fan cowl door is the same.

Subtask 71-13-09-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Fan Cowl Aft Hold Open Rod (HOR)

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.

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

(1) Move the quick disconnect plunger on the aft HOR (1) away from the engine case bracket.
(2) Disconnect the aft HOR (1) from the engine case bracket.
(3) Remove the four nuts (2), four washers (3) and four bolts (4) that attach the aft HOR to the fan cowl door.
(4) Remove the aft HOR (1) from the fan cowl door and the engine case.
(5) 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 all the necessary COVER - PROTECTION to prevent engine damage.

[Rev.10 from 2021] 2026.04.01 02:32:24 UTC