E.  
Procedure

 S 014-002
 (1)  
Remove the inner ceiling lining around the hinges to get access to the hinge pin bolts (Ref 25-55-02/401).

 S 014-016

 (2)  
Remove the insulation retaining studs and lift the insulation to get access to the attachment bolts on the hinge arms.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL 
A  HINGE FORWARD  BOLT 
SNUBBER 
A  BULK CARGO DOOR  WASHER  NUT 
BULK CARGO DOOR HINGE SEE A  NUT  BOLT ATTACH SNUBBER WASHER  BOLT 
INSULATION DOOR 
CLIP SUPPORT LATCH  NUT  WASHER  A BULK CARGO DOOR HINGE
HINGE  FUSELAGE (REF) WASHER (2 LOCATIONS)  HINGE SNUBBER (FORWARD HINGE ONLY)  B B  HINGE PIN BOLT 
HINGE PIN BOLT  ATTACH BOLTS HINGE 
NUT  SHIM BOLTS HINGE ATTACH  SHIM 
B-B  DOOR  ATTACH BOLTS SNUBBER 

A-A
Bulk Cargo Door Hinge Figure 401
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 414-014
 (3)  Close the door.
 S 494-003
 WARNING: DO NOT USE BLOCKS AND A C-CLAMP TO HOLD THE BALANCE MECHANISM
_______ IN ITS POSITION. IF YOU USE BLOCKS AND A C-CLAMP, THE CABLE CAN MOVE AND CAUSE INJURY.
 (4)  
Install the safety pin or cable restraining tool on the spring tube to hold the balance mechanism cable in its position.

 S 014-017

 (5)  
Open the door lightly to release the cable tension.

 S 024-018

 (6)  
Disconnect the balance mechanism cable from the door (Ref 52-36-02/401).

 S 864-004

 (7)  
Close the door.

 S 024-005

 (8)  
Remove the door hinge as follows (View A-A, Fig. 401):

 (a)  
Remove the four bolts that attach the hinge to the door.

 (b)  
On the forward hinge, remove the three bolts that attach the snubber to the hinge.

 (c)  
Remove the bolt that attaches the hinge to the fuselage (View B-B, Fig. 401).

 (d)  
Remove the door hinge.

 TASK 52-36-04-404-006
 3. Cargo Door Hinge - Installation
_______________________________
 A. Special Tools and Equipment
 (1)  
MIT65B09269 Tool - Cable Restraining

 B.
Standard Tools and Equipment

 (1)  
Pin - Safety, 0.25-inch diameter, 4.0-inch length

 C.
References

 (1)  
25-55-02/401, Bulk Cargo Compartment Ceiling and Sidewall Lining

 (2)  
52-36-01/401, Bulk Cargo Door

 (3)  
52-36-02/401, Bulk Cargo Door Balance Mechanism

 (4)  
AIPC 52-36-02, Fig 2; AIPC 52-36-04, Fig 1

 D.
Access

 (1)  
Location Zone
 146 Bulk Cargo Compartment, RH

 (2)  
Access Panel
 823R Door - Bulk Cargo Compartment

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A
747-400 MAINTENANCE MANUAL
 E. Procedure
 S 424-007
 (1)  
Attach the hinge to the fuselage with the bolt, nut, and two washers (View B-B, Fig. 401).

 S 424-019

 (2)  
Tighten the nut until there is no play between the bolt and the fitting.
　
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