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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 POTABLE WATER SERVICE PANEL ACCESS DOOR - REMOVAL/INSTALLATION
______________________________________________________________
 1.  General_______
 A. This procedure contains two tasks:
 (1)  
The removal of the access door from the service panel for the potable water system (referred to as the door)

 (2)  
The installation of the access door on the service panel for the potable water system.

 TASK 52-49-02-004-001
 2.  Potable Water Service Panel Access Door Removal_______________________________________________
 A. References
 (1)  
IPC 52-49-02 Fig. 3

 (2)  
IPC 52-49-66 Fig. 1

 B.
Access

 (1)  
Location Zone 128 Area Aft of the Forward Cargo Container Compartment, RH 143 Area Below Aft Cargo Container Compartment, LH

 C.
Procedure

 S 024-007
 (1)  
Remove the door (Fig. 401).

 (a)  
Open the door.

 (b)  
Disconnect the bonding jumper from the door.

 (c)  
Remove the three screws that hold the hinges to the structure.

 (d)  
Remove parts from the forward door for installation subsequently: 1) Remove the magnet from the door. 2) Remove the angle and the brackets from the door.

 (e)  
Remove the parts from the aft door for installation subsequently: 1) Remove the angle from the door. 2) Remove the bracket from the door.

 TASK 52-49-02-404-003
 3.  Potable Water Service Panel Access Door Installation____________________________________________________
 A. Standard Tools and Equipment
 (1)  Bonding Meter (Ref 20-22-01/601)
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 52-49-02
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A
747-400
MAINTENANCE MANUAL

SEE B
1620 STA  SEE  A 
ANGLE  LATCH (4 LOCATIONS) 
1602 STA  B  B  A  A 
(2 LOCATIONS) HINGE 
AFT ACCESS DOOR 
A  ANGLE  (6 LOCATIONS) LATCH 985.733 STA 
960 STA  FWD SWITCH  B  B  A  A 
C 
SEAL  C  BRACKET 
(2 LOCATIONS) HINGE  FORWARD ACCESS DOOR B 

Potable Water Service Panel Access Door Installation
Figure 401 (Sheet 1)

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 52-49-02
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

STRUCTURE (REF)
CHECK OF THE LATCH. THE BOLT LATCH BOLT MUST MOVE 0.01 TO 0.03 INCH.
A-A

C-C

Potable Water Service Panel Access Door Installation
Figure 401 (Sheet 2)

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 52-49-02
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747-400
MAINTENANCE MANUAL

 B.  References
 (1)  
20-22-01/601, Electrical Bonding

 (2)  
IPC 52-49-02 Fig. 3

 (3)  
IPC 52-49-66 Fig. 1

 C.  
Access

 (1)  
Location Zone 128 Area Aft of the Forward Cargo Container Compartment, RH 143 Area Below Aft Cargo Container Compartment, LH

 D.  
Procedure

 S 424-008
 (1)  
Install the door.

 (a)  
Install parts you removed from the replaced forward door: 1) Install the magnet on the door. 2) Install the brackets on the door. 3) Install the angle on the door.
　
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