S 485-161
 S 485-001
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A

747-400
MAINTENANCE MANUAL

LATCH ACTUATOR TEST PANEL FIG. 508
NOSE DOOR
CONTROL EQUIPMENT
MODULE, H122

PORTAL LATCH
FITTING
FIG. 503

HINGE ACCESS CLEARANCE DOOR
PRESSURE SWITCH
FIG. 506 AND ISOLATION RELAY
LINEARFIG. 507 ACTUATOR
FIG. 504 NOSE DOOR AND LIGHT
DRIVE UNIT
MODULE, H121 FIG. 504
FIG. 508
ADJUSTABLE DOOR LATCH
FAIRING ANNUNCIATOR
FIG. 505 FIG. 508
DOOR CLOSED ANNUNCIATOR
PUSH-PULL CAM FIG. 508
AND ACTUATOR FIG. 502
Nose Cargo Door Adjustment
Figure 501

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C16529
A
747-400
MAINTENANCE MANUAL

CAM 
ROLLER 
PUSH-PULL CAM 
CAM ACTUATOR 
3/8-INCH SPROCKET  BODY FRAME 
FOR MANUAL DRIVE 
DOOR FRAME 
CAM SUPPORT 
SUPPORT  FITTING 
FITTING 
FWD 
PUSH-PULL CAM AND ACTUATOR 

DOOR NOSE CARGO 
POINT OF CONTACT ROLLER 
NOSE CARGO DOOR 
CAM  FWD 
CAM AT THE OPEN POSITION AND TOUCHES THE ROLLERS 
1  MEASURE THIS DIMENSION BETWEEN THE DOOR THIS DIMENSION THROUGHOUT THE NOSE CARGO YOU CAN USE A WOODEN BLOCK OF 5.02-INCHES LONG AND INSTALL BETWEEN THE DOOR AND BODY FRAMES TO KEEP THE DOOR IN THIS POSITION. AND BODY FRAMES ON THE CENTERLINE. KEEP DOOR ADJUSTMENT. NOTE:____ 

ND-4 RIG PIN HOLE (ESTABLISHES DWELL POSITION OF DOOR)
THIS HOLE NOT CAM
USED FOR RIGGING
FWD
CAM SUPPORT FITTING
5.07
5.02 INCHES
4.97
1
CAM AT THE (DWELL) RIG CLOSED POSITION
Push-Pull Cam and Cam Actuator Adjustment
Figure 502 (Sheet 1)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
B26815
A
747-400
MAINTENANCE MANUAL

B  BA SERRATED ROLLER SUPPORT 0.12 |0.02 INCH PUSH-PULL CAM PLATES FITTING 0.06 |0.02 INCH CLEARANCE 
A DOOR FRAME BODY FRAME SUPPORT CAM  1 INCHES 4.97 5.07 (4 LOCATIONS) MOUNTING BOLT ROLLER SUPPORT SHIM 5.02 
FWD  CAM AT THE CLOSED POSITION 
CAM ROLLER  CAM  CAM ROLLER 
FITTING ROLLER SUPPORT 
INCH 0.12 |0.02  A-A  EQUAL GAP BETWEEN CAM AND ROLLER WITHIN 0.025 INCH  INCH 0.06 |0.02  B-B  INCH 0.06 |0.02 
Push-Pull Cam and Cam Actuator Adjustment Figure 502 (Sheet 2) 

B26813
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
10R
11 
A 
9R  A  A  A 
A 
10L 
8R  A  A  A  A 
9L 
7R  A 

6R
8L
5R 7L
C
6L
C 4R 5L B 4L
3R
B
3L 2R 2L
1R
1L
PUSH-PULL CAM ROLLER PORTAL LATCH FITTING
LATCH LOCATIONS 9L AND 9R
0.010
STOP PININCH
0.003
CLEARANCE 10L,10R AND 11
DOOR FITTING  RETAINER
0.043
INCH
0.003 CLEARANCE BEARING
　
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