B.
Access

 (1)  
Location Zone 211 Passenger Cabin, Nose to First Door, LH 212 Passenger Cabin, Nose to First Door, RH 231 Passenger Cabin, First to Second Door, LH 232 Passenger Cabin, First to Second Door, RH 241 Passenger Cabin, Second to Third Door, LH 242 Passenger Cabin, Second to Third Door, RH 251 Passenger Cabin, Third to Fourth Door, LH 252 Passenger Cabin, Third to Fourth Door, RH 271 Passenger Cabin, Sta 2040 to Sta 2360, LH 272 Passenger Cabin, Sta 2040 to Sta 2360, RH

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747-400
MAINTENANCE MANUAL

 (2)  
Access Panel
 831L Door - No. 1 Main Entry, LH
 841R Door - No. 1 Main Entry, RH
 832L Door - No. 2 Main Entry, LH
 842R Door - No. 2 Main Entry, RH
 833L Door - No. 3 Main Entry, LH
 843R Door - No. 3 Main Entry, RH
 834L Door - No. 4 Main Entry, LH
 844R Door - No. 4 Main Entry, RH
 835L Door - No. 5 Main Entry, LH
 845R Door - No. 5 Main Entry, RH

 C.
Procedure

 S 424-007
 WARNING:_______DO NOT OPEN A DOOR DURING THE INSTALLATION. THE DOOR EMERGENCY MECHANISM WILL OPERATE IF YOU OPEN A DOOR WITH THE MODE SELECTOR LEVER IN THE ARMED (AUTOMATIC/ARM) POSITION. THE EMERGENCY OPERATION OF THE DOOR AND ESCAPE SYSTEM CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO PERSONS.
 (1)  
Install the switch:

 (a)  
Attach the switch to the bracket with the bolts.

 (b)  
Attach the electrical connector to the switch.

 (c)  
Put the mode selector lever in the disarmed (MANUAL/DISARM) position.

 (d)  
Make sure the clearance between the manual switch and its actuator is correct (Section A-A). 1) Remove the mode selector lever if it is necessary. 2) Add or remove shims from the switch and the switch actuator

 to make the clearance 0.20 |0.03 inch.

 (e)  
Put the mode selector lever in the armed (AUTOMATIC/ARM) position.

 (f)  
Make sure the clearance between the automatic switch and its actuator is correct (Section A-A). 1) Remove the mode selector lever if it is necessary.

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 (g)  2) On doors 1-4, add or remove shims from the switch and its actuator to make the clearance 0.20 |0.03 inch. 3) On door 5, add or remove shims from the switch and its actuator to make the clearance 0.20 to 0.25 inch.Align the switch and the switch actuator (Section B-B): 1) Add or remove shims from the switch, actuator or bracket to make the switch and its actuator align correctly. 2) The actuator and the switch must align in less than 0.03 inch.
 (2)  S 414-010Install the mode selector lever if it is necessary.
 (3)  S 414-011Install the lining on the applicable door (AMM 52-11-02/401).
 (4)  S 864-012Make sure that the mode selector lever is in the disarmed (MANUAL/DISARM) Position.
 (5)  S 864-013Close these circuit breakers and remove the DO-NOT-CLOSE tags: (a) P7 Overhead Circuit Breaker Panel 1) 7A1 MAWEA PWR A 2) 7B1 MAWEA PWR B

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747-400 MAINTENANCE MANUAL
 UPPER DECK DOOR MANUAL POSITION INDICATING SWITCH -
___________________________________________________ REMOVAL/INSTALLATION
____________________
 1.  General_______
 A.  This procedure refers to the manual position indication switch as "the switch".
 B.  This procedure contains two tasks:
　
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