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A
747-400 MAINTENANCE MANUAL
 UPPER DECK CREW SERVICE DOOR - REMOVAL/INSTALLATION
___________________________________________________
 1. General
_______
 A. This procedure has two tasks:
 (1)  
The removal of the crew service door on the upper deck

 (2)  
The installation of the crew service door on the upper deck

 TASK 52-13-01-004-001
 2. Upper Deck Crew Service Door Removal (Fig. 401)
____________________________________
 A. Special Tools and Equipment
 (1)  
Crew Service Door Safety Barrier - 6PRE65B00040

 B.
Standard Tools and Equipment

 (1)  
Spring Scale - 0-50 pound range

 C.
Access

 (1)  
Location Zone
 224 Fwd Upper Deck, RH

 (2)  
Access Panel
 847R Upper Deck Emergency Door, RH

 D.
Procedure

 S 864-002
 (1)  
Move the escape slide to the aft end of the tracks.

 S 864-003

 (2)  
Put the door in the open position.

 S 034-004

 (3)  
Disconnect the lower hinge as follows:

 (a)  
Remove the bolt that holds the hinge pin in the lower hinge fitting.

 (b)  
Remove the hinge pin from the lower hinge fitting and the pivot fittings.

 NOTE: Keep the nylon washers that are between the hinge
____ fitting and the pivot fitting.
 S 034-005
 (4)  
Disconnect the upper hinge as follows:

 (a)  
Remove the bolt that attaches the upper hinge fitting to the top pivot fitting.

 NOTE: Keep the spacers that are in the pivot fitting for
____ subsequent installation.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400
MAINTENANCE MANUAL

UPPER TRACK
SEE F UPPER HINGE FITTING
SEE B
LATCH ROLLER
AND LATCH
CAM FITTING
SEE A
STOP PIN AND STOP FITTING (10 LOCATIONS)
CONTROL ROD
SEE C
FWD
STATION PROGRAMMING CAM AND CARRIAGE 0.13 |0.03 INCH LATCH
SEE  E 
LOWER HINGE 
FITTING  FIRM 
SEE  D  CONTACT 
LOWER TRACK  FRAME 
SEE  G 
2. LATCH CAM 
FITTING 
INBD 
1. LATCH ROLLER 

LATCH CAM FITTING
A

Upper Deck Door - Removal/Installation
Figure 401 (Sheet 1)

B41090
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747-400
MAINTENANCE MANUAL

4. UPPER CARRIAGE  A 
3. PIVOT FITTING  UPPER TRACK 
FWD  FITTING 5. UPPER HINGE 
FITTING 3. PIVOT  CARRIAGE 4. UPPER  6. CONTROL ROD UPPER HINGE FITTING B  A 
5. UPPER HINGE FITTING 
6. CONTROL ROD 
A-A 
Upper Deck Door - Removal/Installation Figure 401 (Sheet 2) 

B41095
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747-400
MAINTENANCE MANUAL

CONTROL CAM (REF)
7. LOWER CONTROL ROD
LOWER INBOARD HINGE FITTING (REF)  CONTROL ROD (REF) 8. TRANSLATION ARM 
FWD 
CONTROL ROD C 

Upper Deck Door - Removal/Installation
　
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