BULK CARGO DOOR
SEE A 1. SNUBBER
14. CABLE ATTACHMENT
SEE C
4. CABLE DRUM
12. DOOR STOP (16 LOCATIONS)
SEE D
11. DOOR CENTERING ROLLER (2 LOCATIONS)
SEE E
10. LATCH PROBE ASSEMBLY
2.
 HINGE ARM SEE F

3.
 INSULATION

5. BALANCE MECHANISM
13. BALANCE
6. SPRING
CABLES
TUBE 7. BULK CARGO DOOR
9. INNER OPERATING HANDLE
FWD
8. LATCH SUPPORT CLIP SEE B
BULK CARGO DOOR A
Bulk Cargo Door Installation
Figure 401 (Sheet 1)

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A
747-400 MAINTENANCE MANUAL
BOLT 
ADJUSTMENT  (EXAMPLE, 2 LOCATIONS) 
CEILING PANEL 
(REF)  16. CABLE  CABLE 13. BALANCE 
CLEVIS 

UPLATCH HOOK
LATCH SUPPORT 7. DOOR CLIP
2. FORWARD HINGE ARMFWD INBD
CABLE ATTACHMENT LATCH SUPPORT CLIP (BALANCE CABLE WITH CLEVIS END FITTING)
B 
FUSELAGE STRUCTURE (REF)  FITTING STOP PIN AND SPRING LOCK SEE G DOOR STOP 7. DOOR 30. PIN  ROLLER CENTERING 11. DOOR 
A  A 
FRAME STOP PAD FITTING  -0.00 +0.020.00 INCH 

C
7. DOOR
17. DOOR CENTERING PLATE
FUSELAGE STRUCTURE (REF)
18. SHIM
DOOR STOPS (EXAMPLE) DOOR CENTERING ROLLER DE
Bulk Cargo Door Installation
Figure 401 (Sheet 2)

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A
747-400
MAINTENANCE MANUAL

29. STOP PIN 
30. DOOR STOP 
2. HINGE  FITTING 
ARM 

31. SPRING LOCK
26. WASHER
(2 LOCATIONS)  32. FRAME STOP PAD
27. SHIM
(2 LOCATIONS)

22. SHIM
28. BOLT
STOP PIN AND SPRING LOCK
(2 LOCATIONS)
(2 LOCATIONS)
G
25. NUT
19. BOLT
26. WASHER
(2 LOCATIONS)

20.
 BOLT

21.
 WASHER

21.
 WASHER

22.
 SHIM FRAME STOP

23.
 SHIM

PAD FITTING
22. SHIM  30. DOOR STOP FITTING24. NUT FUSELAGE STRUCTURE 7. DOOR
HINGE ARM
(REF)
F
29. STOP PIN
32. FRAME STOP PAD
MAXIMUM CONTACT RADIUS 0.15 INCH
A-A
Bulk Cargo Door Installation
Figure 401 (Sheet 3)

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747-400 MAINTENANCE MANUAL
 S 094-035
 WARNING:_______ DO NOT USE BLOCKS AND A C-CLAMP TO HOLD THE BALANCE MECHANISM
 CABLE.  IF YOU USE BLOCKS AND A C-CLAMP, THE CABLE CAN MOVE
 QUICKLY AND CAUSE INJURIES TO PERSONS, OR DAMAGE TO THE

 EQUIPMENT.
 (2)  
Use a safety pin or a restraining tool to keep the balance mechanism cable in its position in the spring tube (AMM 52-36-02/401).

 S 034-025

 (3)  
Remove the cargo net (AMM 25-55-01/401).

 S 864-026

 (4)  
Close the bulk cargo door.

 S 034-004

 (5)  
Open the bulk cargo door sufficiently to release the tension in the balance mechanism cable.

 S 024-027

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

 S 864-005

 (7)  
Close the bulk cargo door.

 S 034-006

 (8)  
Remove the insulation retainer studs as it is necessary from the bulk cargo door.
　
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