52-11-09
ALL ú ú 03 Page 409 ú Feb 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
E. References
(1)
AMM 25-59-01/401, Main Deck Compartment Cargo Lining Panel
(2)
52-09-02/201, Flap Type Mechanical Seals
(3)
52-11-02/401, Main Entry Door Lining and Insulation
(4)
52-11-04/401, Main Entry Door Guide Arm
(5)
52-11-09/501, Main Entry Door No. 5
(6)
52-11-11/401, Body Hinge Torque Tube
(7)
52-11-14/401, Main Entry Door Hinge Flaps
(8)
52-71-00/501, Door Warning System
F.
Access
(1)
Location Zone
271 Main Deck, Sta 2040 to Sta 2360, LH
(2)
Access Panel
271AL Panel, Access - Door Maintenance (Door 5, LH)
835L Door - No. 5 Main Entry, LH
G.
Prepare for Installation
S 644-017
(1) Do these steps to apply grease to the upper and lower hinge bearings on the body torque tube.
NOTE: This will prevent the entry of water:
____
(a)
At the upper hinge arm (13), fill the hole on the upper side of the bearing on the lower guide plate (View B).
(b)
At the lower hinge arm (18), fill the hole on the upper side of the bearing above the hinge link (View C).
S 644-018
(2)
Do these steps to apply grease to the hinge bearings on the door torque tube to prevent the entry of water:
(a)
Fill the hole on the upper side of the bearing at the door adjustment nut (View D).
(b)
Fill the hole above the lower bearing at the upper hinge arm (13).
(c)
Fill the hole on the upper side of the bearing in the bearing plate above the lower hinge link.
S 434-019
(3)
Examine and install the new seals, if it is necessary (Ref
52-09-02/201).
S 214-020
(4)
Examine the seal depressor surface on the body to make sure there is minimum seal leakage.
(a)
Repair the seal, if it is necessary.
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52-11-09
ALL ú ú 04 Page 410 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
H. Procedure
S 094-021
(1)
Remove the safety barrier.
S 494-022
(2)
Attach the sling to the door.
S 424-023
(3)
Install the door.
(a)
Turn the door hinge arms (13, 18) to the door open position.
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