747-400 AMM 飞机维护手册 SERVICING 2(31)

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DOORS NO. 1, 2, 3 AND 4 2 10 POINTS
THERE ARE THREE LOCATIONS ON EACH SIDE OF THE DOOR.
MIL-PRF-32033 IS USED TO KEEP SURFACES DRY. THIS HELPS PREVENT ICE ON THE COMPONENTS.

Main Entry Doors Anti-Icing
Figure 302 (Sheet 1)

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A
747-400
MAINTENANCE MANUAL

 

 

FWD MIL-PRF-32033 (2 LOCATIONS)
DOOR NO. 5

11 POINTS

Main Entry Doors Anti-Icing
Figure 302 (Sheet 2)

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K58782
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747-400
MAINTENANCE MANUAL

SWAGED BALL AT EACH END OF THE CABLE ASSEMBLY
BMS 3-24
(2 LOCATIONS)
FWD
2 POINTS
Main Entry Doors No. 1-4

Figure 302A

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F03430
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747-400
MAINTENANCE MANUAL

LATCH ROLLER (4 LOCATIONS)
LATCHING AND
SEE ACOCKING CRANK ROLLERS
DOOR DISARMING CABLE TERMINAL
SEEJ
SHEAR PIN
SEE B
HINGE ARM LOWER BEARING
SEE C
FWD
TORQUE TUBE CENTER BEARING
SEE D
SPROCKET
BEARINGSTORQUE TUBE AND SLEEVE
CENTER BEARING  ANCHOR
FITTING

SEE KSEE I BELLCRANK
SEE L
HINGE ARM UPPER AND LOWER BEARINGS
SEE L
BALL AND HINGE ARMSPLINED SHAFT
UPPER BEARING
SEE H

SEE E
SPLINED SHAFT GUIDE ARM
AND FITTING SEE F
SEE G
Main Entry Doors No. 1-4 Figure 303 (Sheet 1)
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A
747-400
MAINTENANCE MANUAL

LATCH ROLLER (1 LOCATION) 1 FLUSH BMS 3-24 
HINGE ARM 1 POINT A 
SHEAR PIN 
(1 LOCATION) BMS 3-24
TRIGGER 
2 1  Figure 303 (Sheet 2) Main Entry Doors No. 1-4 THERE ARE FOUR LATCH ROLLERS FOR EACH DOOR THE DOOR IS CLOSED IN THIS VIEW 2 1 POINT B 

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A 747-400 MAINTENANCE MANUAL
HINGE ARM
HINGE ARM
LOWER BEARING
FLUSH
FWD
GREASE
BMS 3-24

SHIELD
(1 LOCATION)
1 POINT
3
C4

FWD
TORQUE TUBE CENTER BEARING
SNUBBER
OR
BMS 3-24
(1 LOCATION) ANCHOR
5
FITTING
3  FILL THE EMPTY SPACE ABOVE THE BEARING, BETWEEN THE SHAFT AND THE BEARING HOUSING. THIS WILL HELP KEEP WATER OUT OF THE BEARING.
4
THE DOOR IS FULLY OPEN IN THIS VIEW. 1 POINT 5
FILL THE EMPTY SPACE ABOVE THE BEARING,
BETWEEN THE SNUBBER SHAFT AND THE ANCHOR

D
FITTING. THIS WILL HELP KEEP WATER OUT
OF THE BEARING.

Main Entry Doors No. 1-4
Figure 303 (Sheet 3)

F53813
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