Removal of the Fan Cowl Door Keepers [CFML]

TASK 71-13-13-000-806-A
Removal of the Fan Cowl Door Keepers

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.

FIN: 4019KM

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)
No specific	1	WRENCH - HEXAGONAL

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
Fan Cowl Door Keepers

3. Job Set-up
Subtask 71-13-13-941-066-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 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 71-13-13-010-071-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

4. Procedure
Subtask 71-13-13-020-064-A

A. Removal of the Sheet Metal Protection
(1) Remove the sheet metal protections:
(a) Remove the bolts (3) or (6) or (9) and washers (2) or (5) or (8).
(b) Remove the sheet metal protection (1) or (4) or (7) from the fan cowl door.

Subtask 71-13-13-020-065-A

B. Removal of the Fan Cowl Door Keepers

CAUTION: DO NOT TURN THE CLEVISES. IF YOU TURN THE CLEVISES, YOU CAN CAUSE DAMAGE TO THE HOUSING GUIDE. IF THE GUIDE IS DAMAGED, THE CLEVIS CAN TURN. IF THE CLEVIS CAN TURN, THE CLEVIS CAN NOT ENGAGE CORRECTLY WITH THE LATCH AND CAN KEEP THE LATCH FROM CLOSING CORRECTLY. IF THE LATCHES ARE NOT CLOSED CORRECTLY, THE FAN COWLS CAN OPEN IN FLIGHT.

(1) Remove the fan cowl door keepers:
(a) With a WRENCH - HEXAGONAL, rotate the adjusting nut (16) or (17) or (18) to extend the clevis (10) or (11) or (12) and remove it from the housing assembly (19) or (20) or (21).

NOTE: The clevis (10), the adjusting nut (16) and the housing assembly (19) are parts of the fan cowl door keeper (22).

NOTE: The clevis (11), the adjusting nut (17) and the housing assembly (20) are parts of the fan cowl door keeper (23).

NOTE: The clevis (12), the adjusting nut (18) and the housing assembly (21) are parts of the fan cowl door keeper (24).

(b) Remove the bolts (37) or (38) or (39), washers (25) or (26) or (27) and nuts (28) or (29) or (30). Discard the nuts (28) or (29) or (30).
(c) Remove the housing assembly (19) or (20) or (21) from the fan cowl door.

NOTE: The housing assembly (19) is part of the fan cowl door keeper (22).

NOTE: The housing assembly (20) is part of the fan cowl door keeper (23).

NOTE: The housing assembly (21) is part of the fan cowl door keeper (24).

(d) Remove the bolts (34) or (35) or (36) and washers (31) or (32) or (33).
(e) Remove the mounting plate (13) or (14) or (15) from the fan cowl door.

NOTE: The mounting plate (13) is part of the fan cowl door keeper (22).

NOTE: The mounting plate (14) is part of the fan cowl door keeper (23).

NOTE: The mounting plate (15) is part of the fan cowl door keeper (24).

[Rev.10 from 2021] 2026.04.02 06:33:20 UTC