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52-11-00
ALL ú ú 01A Page 608 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 416-019
(8)
Install the maintenance access panel, forward of the door, on the outer fuselage of the airplane.
S 416-020
(9)
Install the hinge covers on the inner side of the door.
S 416-021
(10)
Install the lining on the door (Ref 52-11-02/401).
S 096-022
(11)
Remove the aerostand outboard of the door.
TASK 52-11-00-206-023
5. Examine the Manual Operation Latch Mechanism on the Main Entry Door___________________________________________________________________ (Fig. 601)
A. Standard Tools and Equipment
(1)
Aerostand (necessary to get to the main entry door (door) from the outer side of the airplane).
B.
References
(1)
52-11-02/401, Main Entry Door Lining and Insulation
C.
Access
(1)
Access Panel
831L Door - No. 1 Main Entry, LH
835L Door - No. 5 Main Entry, LH
D.
Examine the Manual Latch Mechanism
S 016-024
(1)
Remove the lining from the door (Ref 52-11-02/401).
(2)
Install the aerostand immediately outboard of the door.
(3)
Remove the control cam from the handle mechanism.
(4)
Examine the latch mechanism.
S 496-025
S 016-026
S 216-027
NOTE: Use a mirror if it is necessary.
____
(a) Examine the latch and cocking cranks for corrosion and general condition.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-11-00
ALL ú ú 01A Page 609 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(b)
Examine the torque tubes, cranks, control rods and gate control rods through the access holes in the door. 1) Examine each of these components for the cracks, corrosion
and general condition. 2) Make sure the attach fittings are tight and in good condition.
(c)
Install the control cam.
(d)
Open the door.
(e)
Examine each latch roller on the door and the latch fittings on the airplane structure. 1) Make sure the latch rollers and fittings are tight and have
no cracks or corrosion.
S 416-028
(5)
Close and latch the door.
S 416-029
(6)
Install the lining on the door (Ref 52-11-02/401).
S 096-030
(7)
Remove the aerostand outboard of the door.
TASK 52-11-00-206-031
6. Examine the Internal Handle for the Main Entry Door
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