Removal of the Right Fan Cowl Door [PW11]

TASK 71-13-20-000-801-A
Removal of the Right Fan Cowl Door

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: 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.

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

CAUTION: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.

ZONE: 400
FIN: 1410KM1 ** ON A/C NOT FOR ALL
FIN: 1410KM2 ** 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	CAP - PROTECTION
No specific	AR	COVER - PROTECTION
No specific	1	DRIFT - PUNCH
No specific	1	HAMMER - NON METALLIC
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 60.5 and 55 lbf.in (0.68 and 0.62 m.daN )
636-2000-17GSE	1	FAN COWL HANDLING SLING
636-2000-18GSE	1	FAN COWL DOLLY
636-2000-19GSE	1	FAN COWL HINGE BOLT THREAD PROTECTORS

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU5-0005)	anti-seize compound

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS

D. Referenced Information

REFERENCE	DESIGNATION
TASK 70-30-00-918-803-A	Consumable Materials Index for the Nacelle (UTC Aerospace Systems)
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 71-13-02-000-801-A	Removal of the Fan Cowl Jumper Cables
TASK 71-13-08-000-801-A	Removal of the Forward Fan Cowl Door Hold Open Rods (HOR)
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
Right Fan Cowl
Fan Cowl Sling
Fan Cowl Thread Protectors
Fan Cowl Dolly

3. Job Set-up
Subtask 71-13-20-941-050-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) Retraction of the slats

CAUTION: DO NOT REMOVE/INSTALL THE FAN COWL DOORS IF THE WING LEADING EDGE SLATS ARE EXTENDED. THIS WILL CAUSE DAMAGE TO THE FAN COWL, THE WING LEADING EDGE SLATS AND THE WING.

(a) Make sure that the slats are retracted.
(b) Put a WARNING NOTICE(S) in the cockpit to tell persons not to move the slat control lever.
(3) Put a ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 71-13-20-040-053-A ** ON A/C NOT FOR ALL

B. Deactivation of the Thrust Reverser System for Ground 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 ground maintenance (Ref. AMM TASK 78-30-00-040-805).

4. Procedure

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

Subtask 71-13-20-480-051-A ** ON A/C NOT FOR ALL

A. Installation of the Fan Cowl Sling

Right Fan Cowl ** ON A/C NOT FOR ALL

(1) Remove the six screws (2) from three hoist inserts on the right fan cowl (1). Keep them for later use.
(2) Attach the 636-2000-17GSE FAN COWL HANDLING SLING to the three hoist points on the right fan cowl (1). Refer to the manufacturer's instructions for the sling.

Subtask 71-13-20-020-050-A ** ON A/C NOT FOR ALL

B. Removal of the Right Fan Cowl Door

CAUTION: WHEN YOU OPEN OR CLOSE THE FAN COWL AFT LATCH (L3), OBEY THESE INSTRUCTIONS:

DO NOT OPEN THE LATCH HOOK MORE THAN NECESSARY TO DISENGAGE FROM OR ENGAGE THE KEEPER.
DO NOT MOVE THE LATCH HOOK TOO MUCH IN THE DIRECTION OF THE LATCH HANDLE OR PUT THE LATCH HOOK AGAINST THE LATCH HANDLE.
MAKE SURE THAT THE ANGULAR POSITION OF THE LATCH HOOK IS A MINIMUM OF 90 DEGREES FROM THE LATCH HANDLE.

IF YOU DO NOT OBEY THESE INSTRUCTIONS, THE LATCH CAN HIT THE ENGINE OIL TUBE AND CAUSE DAMAGE.

(1) Open the latches of the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):

CAUTION: BE CAREFUL NOT TO CAUSE DAMAGE TO THE FAN COWL OR THE PYLON WHEN YOU LIFT THE FAN COWL.

(a) Slowly lift the right fan cowl (1) with the 636-2000-17GSE FAN COWL HANDLING SLING until you can get access to the fan cowl door hinges.
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
(3) Disconnection of the forward Hold Open Rod (HOR):

CAUTION: MAKE SURE THAT THE FORWARD HOLD OPEN ROD DOES NOT HANG LOOSE. IF YOU DO NOT OBEY THIS CAUTION, DAMAGE TO EQUIPMENT CAN OCCUR.

(a) Disconnect the forward HOR from the bracket on the fan case (Ref. AMM TASK 71-13-08-000-801).
(4) Disconnect the connector of the pylon harness from the latch proximity sensor harness.
(5) Put CAP - PROTECTION on the pylon harness connector and the latch proximity sensor harness connector.
(6) Disconnect the connector of the pylon harness from the interphone jack harness.
(7) Put CAP - PROTECTION on the pylon harness connector and the interphone jack harness connector.
(8) Disconnect the jumper cables from the pylon (Ref. AMM TASK 71-13-02-000-801).
(9) Remove the three nuts (5) and (8) and three washers (4) and (7) from the forward, middle and aft hinges.
(10) Install the 636-2000-19GSE FAN COWL HINGE BOLT THREAD PROTECTORS on the threads of the three bolt (3) and (6). Refer to the manufacturer's instructions.
(11) Remove the bolt (3) from the aft hinge.

NOTE: If necessary, carefully use a DRIFT - PUNCH and HAMMER - NON METALLIC to remove the bolt (3) from the hinge.

(12) Remove the bolt (6) from the forward hinge.

NOTE: If necessary, carefully use a DRIFT - PUNCH and HAMMER - NON METALLIC to remove the bolt (6) from the hinge.

(13) Hold the right fan cowl:

WARNING: HAVE ANOTHER PERSON HOLD THE RIGHT FAN COWL WHEN YOU REMOVE THE LAST PIN. THE RIGHT FAN COWL WEIGHS APPROXIMATELY 100 LBS (45.4 KG). IF THE RIGHT FAN COWL MOVES SUDDENLY, INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.

(a) Have a second person hold the right fan cowl (1) and remove the bolt (3) from the middle hinge.

NOTE: If necessary, carefully use a DRIFT - PUNCH and HAMMER - NON METALLIC to remove the bolt (3) from the hinge.

(14) Removal of the right fan cowl:
(a) Carefully lift and move the right fan cowl (1) away from the pylon.
(b) Put the right fan cowl (1) on the 636-2000-18GSE FAN COWL DOLLY. Refer to the manufacturer's instructions.

Subtask 71-13-20-080-051-A ** ON A/C NOT FOR ALL

C. Removal of the Fan Cowl Sling
(1) Remove the 636-2000-17GSE FAN COWL HANDLING SLING from the right fan cowl (1). Refer to the manufacturer's instructions for the sling.
(2) Apply a thin layer of anti-seize compound (Material No.PU5-0005) or equivalent (Ref. AMM TASK 70-30-00-918-803) to the threads of the six screws (2).
(3) Install the six screws (2) into the three hoist inserts on the right fan cowl (1).
(4) TORQUE the six screws (2) to between 60.5 and 55 lbf.in (0.68 and 0.62 m.daN )

.
(5) Remove the 636-2000-19GSE FAN COWL HINGE BOLT THREAD PROTECTORS from the three bolts (3) and (6). Refer to the manufacturer's instructions.
(6) 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 COVER - PROTECTION as necessary to prevent damage to the engine.

[Rev.10 from 2021] 2026.04.01 12:49:23 UTC