(i)  
Make sure the appropriate caution message does not show on EICAS: 1) DOOR FWD CARGO 2) DOOR AFT CARGO.

 S 864-043
 (8)  Remove the electrical power if it is not necessary (AMM 24-22-00/201).
 TASK 52-71-01-404-063
 14. Bulk Cargo Door Warning Switch Installation (Fig. 403)
___________________________________________
 A. References
 (1)  
IPC 52-71-03 Fig. 1

 (2)  
SSM 52-71-01

 (3)  
WDM 52-71-14

 B.
Access

 (1)  
Location Zone
 146 Bulk Cargo Compartment, RH

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 52-71-01
 ALL  ú ú 08 Page 429 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (2)  
Access Panel
 823R Door - Bulk Cargo Compartment

 C.
Procedure

 S 424-044
 (1)
Install the warning switch for the bulk cargo door (Fig. 403).

 (a)  
Remove the tags from the wires and attach them to the switch with the two attach screws.

 (b)  
Before you install the switch, extend the plunger to

 0.75 +0.03/-0.03 inch from the front face of mounting bracket as shown.
 (c)  
Install the switch with two screws (and washers) through the latch from the aft side.

 (d)  
Turn the plunger counterclockwise with a screwdriver until a door locked indication is shown with the door closed and locked.

 NOTE: The indication will show after approximately one-half a
____
 turn.

 (e)  When a door locked indication is shown, turn the plunger an additional two full turns.
 S 864-089
 (2)
Close these circuit breakers for the applicable EICAS system:

 (a)  
On the P7 panel:
 1) P7 Overhead Circuit Breaker Panel
 2) 7F8 UPR EICAS
 3) 7F9 EIU L
 4) 7F10 EIU C
 5) 7F14 LWR EICAS
 6) 7F15 EIU R

 (3)  
Supply the electrical power (AMM 24-22-00/201).

 S 724-045

 (4)  
Do a test of the door warning system on the bulk cargo door.

 (a)  
Open the bulk cargo door.

 (b)  
Make sure that the DOOR BULK CARGO message shows on EICAS.

 (c)  
Close the bulk cargo door.

 (d)  
Make sure the DOOR BULK CARGO message does not show on EICAS.

 S 864-064
 S 864-046
 (5)  Remove the electrical power if it is not necessary
 (AMM 24-22-00/201).

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 52-71-01
 ALL  ú ú 07 Page 430 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 TASK 52-71-01-404-047
 15. Main Entry Door Warning Switches Installation (Fig. 402)
_____________________________________________
 A. Consumable Materials
 (1)  
A00704 Sealant - RTV 162

 B.
References

 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
IPC 52-75-01 Fig. 2

 (3)  
SSM 52-71-01

 (4)  
WDM 52-71-13

 C.
Access

 (1)  
Location Zone
 211 Main Deck Portal To STA 488, LH
 251 Main Deck STA 1319 To STA 1720, LH

 (2)  
Access Panels
 831L Door - No. 1 Main Entry, LH
 835L Door - No. 5 Main Entry, LH

 D.
Procedure

 S 424-048
 (1)
Install the warning switch for the main entry door (Fig. 402).

 (a)  
Before you install the switch, extend the plunger as shown on the switch adjustment chart on Fig. 402.

 (b)  
Remove the tags from the wires.

 (c)  
Attach the wire to the switch with the two attach screws.
　
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