Installation of the Fan Cowl Oil Tank Access door [PW11]

TASK 71-13-12-400-802-A
Installation of the Fan Cowl Oil Tank Access 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: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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.

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

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	1	DYNAMOMETER 44.5 DAN ( 100 LBF) - PUSH PULL
No specific	1	WRENCH - HEXAGONAL
No specific	Torque wrench: range to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )
No specific	Torque wrench: range to between 27 and 24 lbf.in (0.31 and 0.27 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.PU1-0038)	24 gauge lockwire
(Material No.PU5-0005)	anti-seize compound
(Material No.PU5-0005A)	Royco 81 MS Anti-Seize Compound
(Material No.PU5-0005B)	PT 605 Anti-Seize Compound

C. Work Zones and Access Panels

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

D. 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
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
Oil Tank Access Door

3. Job Set-up
Subtask 71-13-12-941-054-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 71-13-12-010-057-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (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) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.

4. Procedure

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

Subtask 71-13-12-420-054-A ** ON A/C NOT FOR ALL

A. Install the Oil Tank Access Door
(1) Removal of the protection covers

CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.

(a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.
(2) Loosen the latch jam nuts on the two latches on the oil tank access door (1).
(3) Loosen the latch screws on the two latches on the oil tank access door (1) by one turn.
(4) Apply a layer of anti-seize compound (Material No.PU5-0005) or Royco 81 MS Anti-Seize Compound (Material No.PU5-0005A) or PT 605 Anti-Seize Compound (Material No.PU5-0005B) to the shoulders of the bolts (5).

NOTE: Do not get the anti-seize compound (Material No.PU5-0005) or Royco 81 MS Anti-Seize Compound (Material No.PU5-0005A) or PT 605 Anti-Seize Compound (Material No.PU5-0005B) on the threads of the bolts (5) or the nuts (2).

(5) Install the oil tank access door (1) on the left fan cowl door. Use the two bolts (5), the two washers (3), the two washers (4) and the two nuts (2).
(6) TORQUE the two nuts (2) to between 27 and 24 lbf.in (0.31 and 0.27 m.daN )

.
(7) Engage the latches to close the oil tank access door (1).
(8) Turn the latch screws on the two latches until the screws touch the striker plate. Use WRENCH - HEXAGONAL 3/32".
(9) Open the latches and measure the force required to close each latch.
(a) Put a DYNAMOMETER 44.5 DAN ( 100 LBF) - PUSH PULL adjacent to the screwdriver slot on the latch actuator and measure the force necessary to close each latch. Make sure the force necessary to close the latch is between 15 lbf (6.67 daN) and 18 lbf (8.01 daN).
(b) If the force is not between 15 lbf (6.67 daN) and 18 lbf (8.01 daN), adjust the latch screw until the force is in the correct range.
(10) TORQUE the latch jam nuts to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

on the two latches on the oil tank access door (1).
(11) Installation of the lockwire

WARNING: USE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(a) Install the 24 gauge lockwire (Material No.PU1-0038) on the latch bolt, latch jam nut and latch screw.

5. Close-up
Subtask 71-13-12-942-052-A ** ON A/C NOT FOR ALL

A. 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 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 12:57:09 UTC