C. Prepare for the Microswitch Adjustment
 S 022-148
 (1)  
Disconnect the power from the seat.

 S 822-149

 (2)  
Do these steps to adjust the forward microswitch:

 (a)  
Put the seat on the seat tracks so the forward bogie unit is approximately 0.10 inch from the forward stop-block.

 (b)  
Loosen the adjustment bolts.

 (c)  
Carefully lower the microswitch bracket on the forward stop-block until you hear a click from the microswitch.

 NOTE: The click is an indication that the circuit is
____ made in the microswitch.
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747-400 MAINTENANCE MANUAL
 (d)  With the microswitch bracket held in this position, carefully tighten the adjustment bolts.
 S 822-151
 (3)  Do these steps to adjust the aft microswitch:
 (a)  
Put the seat on the seat tracks so the microswitch actuator is directly above the forward inboard seat track.

 (b)  
Loosen the adjustment bolts.

 (c)  
Carefully lower the bracket evenly until the clearance between the actuator roller and the top surface of the seat track is

 0.035 inch.
 NOTE: The 0.035 inch clearance is the minimum to get a
____ clearance of 0.050 inch between the aft bogie unit and the aft stop-block. As the 0.035 inch clearance increases, the clearance between the aft bogie unit and the aft stop-block decreases.
 (d)  With the bracket held in this position, carefully tighten the adjustment bolts.
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MAINTENANCE MANUAL

FORWARD BOGIE UNITAFT BOGIE UNIT (2 LOCATIONS)
(2 LOCATIONS) SEE A
SEE B
CAPTAIN'S SEAT - RIGHT VIEW SHOWN FIRST OFFICER'S SEAT - OPPOSITE
ADJUSTMENT BOLTS
ADJUSTMENT BOLTS
BRACKET
MICROSWITCH 
BRACKET  SEAT TRACK 
SEAT 
TRACK 
FORWARD  FORWARD  0.035 INCH 
BOGIE UNIT  STOP-BLOCK 
MICROSWITCH 
ACTUATOR 
0.10 INCH  AFT BOGIE UNIT 
FORWARD BOGIE UNIT  AFT BOGIE UNIT
A  B 

Microswitch Adjustment
Figure 201

F25418
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 CAPTAIN AND FIRST OFFICER SEAT - REMOVAL/INSTALLATION
_____________________________________________________
 1.  General_______
 A.  This procedure contains these tasks:
 (1)  
The removal of the captain and first officer seats.

 (2)  
The installation of the captain and first officer seat.

 (3)  
Captain and First Officer Seat Track Installation and Adjustment.

 (4)  
Bogie Assembly Adjustment

 B.  The 9G seat and the 16G seat are similar in appearance. The steps for removal and installation are the same for both seats
 TASK 25-11-01-004-016
 2.  Captain and First Officer Seat Removal (Fig. 401)______________________________________
 A.  Access
 (1)  Location Zones
 221 Control Cabin, Left
 222 Control Cabin, Right

 B.  Procedure
 S 864-063
 WARNING:_______REMOVE ELECTRICAL POWER FROM THE SEAT. YOU CAN ACCIDENTALLY CAUSE A SEAT TO MOVE AND CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
　
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