(2)  
52-48-03/401, Main (Forward) Electronic Bay External Access Door

 C. Access
 (1)  
Location Zone (Equipment Compartment Exterior Door) 117 Electrical and Electronics Compartment, LH 118 Electrical and Electronics Compartment, RH

 (2)  
Access Panel (Equipment Compartment Exterior Door) 117A Door - Electronics Compartment Access

 D. Lubricate the Electronics Access Door for the Forward Bay (Fig. 307)
 S 013-057
 (1)  
Remove the insulation from the inner surface of the electronics access door.

 S 643-003

 (2)  
Lubricate the electronics access door for the forward bay as shown in Figure 307.

 (3)  
Install the pan and the internal handle.

 S 413-022

 (4)  
Install the insulation on the inner surface of the forward electronics access door (AMM 52-48-03/401).

 S 413-021
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 ALL  ú ú 03 Page 324 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

SEE A
PAN
INTERNAL
HANDLE

SEE B
LATCH ACTUATOR
FORK
A MIL-G-23827 (4 LOCATIONS) 12
BEARING 
3 
MIL-G-23827 
1 2  EACH LATCH ACTUATOR FORK ACTUATOR FORKS AND THE BEARINGS REMOVE THE INTERNAL HANDLE AND PAN TO GET AT THE LATCH LUBRICATE THE INNER SURFACE OF  B 8 POINTS  (4 LOCATIONS) 1 
3  NOT SHOWN THREE OF THE BEARINGS ARE 
Figure 307 Forward Electronics Access Door 

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 TASK 12-21-04-603-031
 5.  Center Electronics Access Door Lubrication__________________________________________
 A. Consumable Materials
 (1)  D00013 Grease - MIL-G-23827
 B. References
 (1)  IPC 52-48-04 Fig. 3
 C. Access
 (1)  
Location Zone (Equipment Compartment Exterior Door) 191 Fairing Wing to Body Forward Lower Half, LH 192 Fairing Wing to Body Forward Lower Half, RH

 (2)  
Access Panel (Equipment Compartment Exterior Door)
 125B Door - Electronics Access

 D. Lubricate the Electronics Access Door for the Center Bay (Fig. 308)
 S 013-066
 (1)  
Remove the insulation from the inner surface of the electronics access door.

 S 643-025

 (2)  
Lubricate the electronics access door for the center bay as shown in Figure 308.

 S 413-028

 (3)  
Close the electronics access door.

 (4)  
Turn the handle to retract and extend the latch rod.

 S 863-053
 NOTE: This will lubricate the latch keeper and teflon bumper.
____
 S 413-027
 (5)  Install the insulation on the inner surface of the electronics access door.
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 ALL  ú ú 03 Page 326 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
LATCH KEEPER
HINGE ARM
HINGE BOLT 
FWD  MIL-G-23827 (2 LOCATIONS) 1 
2 POINTS  TEFLON BUMPER  LATCH ROD  LATCH MECHANISM 
MIL-G-23827 (2 LOCATIONS) 2 
OPERATING HANDLE SHAFT 

1 CLOSE THE CENTER ELECTRONICS ACCESS DOOR AND LUBRICATE AS SHOWN
OPEN THE CENTER ELECTRONICS
ACCESS DOOR AND LUBRICATE AS

2
2 POINTS
SHOWN
Center Electronics Access Door Figue 308
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