Rigging Procedure of the Oil Tank Door Latches [CFML]

TASK 71-13-42-820-802-A
Rigging Procedure of the Oil Tank Door Latches

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

CAUTION: DO NOT EXTEND THE SLATS WHEN THE FAN COWLS AND THE THRUST REVERSER COWLS ARE OPEN. IF YOU DO THIS, DAMAGE TO THE AIRCRAFT CAN OCCUR.

1. Reason for the Job
The oil tank door must be adjusted each time the oil tank door is replaced.
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 10 DAN (22 LBF) - PUSH
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.33 and 0.23 m.daN (29.20 and 20.35 lbf.in )

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
Oil Tank Door Latches Rigging Procedure

3. Job Set-up
Subtask 71-13-42-941-059-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put a WARNING NOTICE(S) in position to tell persons not to operate:

The ENG/MODE selector switch
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 71-13-42-010-058-A

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position in front of the right fan cowl door.

4. Procedure
Subtask 71-13-42-820-051-A

A. Rigging Procedure of the Oil Tank Door Latches
(1) With the latch closed, turn the rigging bolt to get contact between the latch trigger and the oil tank door frame.
(2) Tighten 1.5 additional turns.
(3) Do again the steps 4.A.(1) and 4.A.(2) with the other latch.
(4) Use a DYNAMOMETER 10 DAN (22 LBF) - PUSH to make sure that the closing load is to between 5.34 daN (12.00 lbf) and 7.12 daN (16.01 lbf).
(5) Tighten/loosen each rigging bolt to get this closing force range.
(6) Hold the latch bolts with an allen key and install locking nut.
(7) TORQUE the locking nut to between 0.33 and 0.23 m.daN (29.20 and 20.35 lbf.in )

.
(8) Use a DYNAMOMETER 10 DAN (22 LBF) - PUSH to make sure that the closing load is to between 5.34 daN (12.00 lbf) and 7.12 daN (16.01 lbf).

5. Close-up
Subtask 71-13-42-410-052-A

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 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.02 06:33:23 UTC