S 712-070

 (7)  
Make sure the seat is locked in the lowest position.

 S 712-071

 (8)  
Operate the control lever while you let the seat move to the middle position.

 S 712-072

 (9)  
Release the control lever.

 S 712-073

 (10)
 Make sure the seat is locked in the middle position.

 S 712-074

 (11)
 Make sure the seat does not move up or down more than 0.75 inch from the middle position.

 H.  Do this vertical travel test (electrical operation) for the captain and first officer seats.
 S 862-153
 (1)  
Make sure the Power Cutoff Switch is in the ON position.

 S 712-075

 (2)  
Operate the control switch, for electrical vertical travel, to move the seat to the lowest position.

 S 712-076

 (3)  
Release the control switch.

 S 712-077

 (4)  
Make sure the seat is locked in the lowest position.

 S 712-078

 (5)  
Operate the control switch to move the seat to the highest position while you measure the time of travel.

 (6)  
Release the control switch.

 (7)  
Make sure the seat is locked in the highest position.

 S 712-081

 (8)  
Make sure the time of travel is 5 to 9 seconds from the lowest to the highest position.

 S 712-079
 S 712-080
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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MAINTENANCE MANUAL

 S 862-169
 (9)  Move the Power Cutoff Switch to the OFF position.
 (a)  
Operate the vertical control switch for up and down travel.

 (b)  
Make sure the seat does not move up or down while you operate the control switch.

 I.  Do this lateral travel test (manual operation) for the first observer seat.
 S 862-168
 WARNING: FOR MANUAL SEATS, MAKE SURE THE SEAT TRACK LOCK PIN IS FULLY
_______ ENGAGED IN ALL SEAT TRACK LOCK POSITIONS. UNLOCKED SEATS CAN MOVE AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  
Operate the control lever, for manual forward and aft travel, and move the seat to the most aft position.

 S 712-083

 (2)  
Operate the control lever, for manual lateral travel, while you move the seat to the most outboard position.

 S 712-084

 (3)  
Release the control lever.

 S 712-085

 (4)  
Make sure the seat is locked in the most outboard position.

 S 712-086

 (5)  
Operate the control lever while you move the seat to the most inboard position.

 S 712-087

 (6)  
Release the control lever.

 S 712-088

 (7)  
Make sure the seat is locked in the most inboard position.

 J.  Do this seat recline test for each flight compartment seat.
 S 712-089
 (1)  
Operate the seat recline lever to move the seat back cushion to the most aft position.

 (2)  
Release the seat recline lever.

 (3)  
Make sure the seat back cushion is locked in the most aft position.

 S 712-090
 S 712-091
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400 MAINTENANCE MANUAL
 S 712-092
 (4)  
Operate the seat recline lever to move the seat back cushion to the most forward position.

 S 712-093

 (5)  
Relase the seat recline lever.

 S 712-094

 (6)  
Make sure the seat back cushion is locked in the most forward position.

 S 712-095

 (7)  
Operate the seat recline lever to move the seat back cushion to the middle position.
　
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