HINGE FAIRING
(FORWARD HINGE FAIRING SHOWN)
B
Aft Cargo Door Figure 402 (Sheet 1)
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A
747-400
MAINTENANCE MANUAL
18. CENTER HINGE PINS
17. CENTER HINGE PINS
16.75 INCHES 16. END HINGE PIN (3 LOCATIONS) 9.06 INCHES (3 LOCATIONS) 9.06 INCHES 19. END HINGE PINS 16.75 INCHES
(EXAMPLE) (REF) HINGE FAIRINGS
FORWARD/AFT CENTER HINGES SEE C
FWD A-A
29. BOLT 30. BOLT 29. BOLT 31. HINGE HALF
23. BOLT 24. BOLT 23. BOLT 32. SHIM
HALF 27. SHIM 28. HINGE FWD INBD (9 LOCATIONS) 33. WASHER (9 LOCATIONS) 34. NUT
25. NUT (8 LOCATIONS)26. WASHER (8 LOCATIONS) AFT CENTER HINGE
FORWARD CENTER HINGE
C
Aft Cargo Door
Figure 402 (Sheet 2)
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A
747-400 MAINTENANCE MANUAL
S 014-053
CAUTION:_______ IN CASE THE DOOR DOES NOT OPEN, STOP IMMEDIATELY. DO NOT
OPERATE THE DOOR CONTROL SWITCH. HOLDING THE DOOR CONTROL
SWITCH MAY DAMAGE THE ACTUATOR. WAIT AT LEAST 1 MINUTE BEFORE
SECOND ATTEMPT. IF THE DOOR STILL DOES NOT OPEN, WAIT AT LEAST
10 MINUTES BEFORE THIRD ATTEMPT.
(2)
Open the cargo door sufficiently to get access to the cargo compartment.
S 034-004
(3)
Remove the cargo door junction box (AMM 52-34-05/401).
S 034-005
(4)
Remove the upper and lower door lining.
S 034-006
(5)
Remove the swivel clamp (8) from the door support fitting (9) (Fig. 403).
S 034-007
(6)
Remove the rain seal from the cargo door (AMM 52-09-03/401).
S 494-008
(7)
Install the cargo door sling and apply sufficient tension to release the door hinges of the door weight (Fig. 404).
S 034-009
(8)
Disconnect the links (View D, Fig. 405) which extend from each rotary actuator arm to the door support fittings.
S 014-010
(9)
Remove the doorway ceiling panel (AMM 25-52-01/401).
S 034-011
(10)
Remove the hinge pins (Fig. 401, Fig. 402).
(a)
Remove the fasteners that attach the third and fourth center hinge sections on the forward end of the door.
NOTE: Identify the shims with a tag for the installation
____ procedure. You must install the shims in the same position.
On the aft cargo door, remove the fifth and sixth center hinge sections from the forward end of the door.
(b) Install the bolt in the end hinge pin (16 and 19) to remove the end hinge pin.
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747-400
MAINTENANCE MANUAL
WIRE BUNDLE
FLEXIBLE
CONDUIT
SEE A
2. LINK
3. ROTARY
ACTUATOR
ARM
1. DOOR
2. LINK
4. SWIVEL
CLAMP
8. SWIVEL
CLAMP
FITTING SUPPORT 9. DOOR 9. FITTING SUPPORT DOOR 5. NUT 6. WASHER 7. SCREW
8. SWIVEL 4. SWIVEL 3. ROTARY
CLAMP CLAMP ACTUATOR 1. DOOR
7. SCREW ARM
6. WASHER WIRE BUNDLE
5. NUT FLEXIBLE CONDUIT DOOR CLOSED
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