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 (n)  Attach the actuator to the slat with bolt, bushing, washers and
 nut (View B-B, Fig. 401).
 NOTE:____ The clamp-up bushing, bolthead, and retainer must be on
 same side.  Install one chamfered (45 degrees) washer
 between rib flange and nut at slat No. 1 and slat No. 6
 (Slat Station 319.90) only.  Install the washer with its
 chamfered side pointing to the rib flange.
 (o)  Tighten the nut to 540-600 pound-inches.

 S 414-027
 (7)  
Install the access panel and seal on the slat at the actuator rod end.

 S 424-024

 (8)  
Install the actuator door on the actuator:

 (a)  
Align the holes on the actuator door with the actuator.

 (b)  
Loosely install the bolts.

 (c)  
Make sure that the rod end seal is attached to the clips under the door.

 (d)  
Pull the door down as far as the holes will permit.

 (e)  
Tighten the bolts sufficiently to keep the door in its position.

 S 094-050
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ LEADING EDGE FLAP AND SLAT LOCKS. THE LEADING EDGE FLAPS AND SLATS CAN MOVE QUICKLY IF YOU DO NOT REMOVE THE LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (9)  Remove all the locks from the leading edge slat (Ref 27-81-00/201).
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A
737-300/400/500MAINTENANCE MANUAL
 S 864-034
 WARNING:_______ MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LEADING
 EDGE SLATS BEFORE YOU PRESSURIZE THE HYDRAULIC SYSTEM.  THE
 LEADING EDGE SLATS CAN EXTEND WHEN YOU PRESSURIZE THE HYDRAULIC
 SYSTEM.  THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO
 EQUIPMENT.

 (10) Pressurize hydraulic system B (Ref 27-81-00/201).
 S 214-051
 CAUTION: CAREFULLY MONITOR THE CLEARANCES DURING THE INITIAL RETRACTION
_______ AND EXTENSION OF THE SLATS. IF THERE IS NO SUFFICIENT CLEARANCES, STRUCTURAL DAMAGE CAN OCCUR.
 (11)
 Retract the slats.

 S 864-052

 (12)
 Lightly move the actuator door up into the retracted position.

 S 864-053

 (13)
 Move the flap control lever to the 10-unit detent to fully extend the slats.

 S 864-035

 (14)
 Release the pressure from hydraulic system B (Ref 27-81-00/201).

 S 434-036

 (15)
 Tighten the attachment bolts of the actuator door.

 S 864-019

 (16)
 Pressurize hydraulic system B (Ref 27-81-00/201).

 S 874-037

 (17)
 Operate the slats and flaps a minimum of two full cycles to bleed air from the system.

 S 714-038

 (18)
 Move the flap control lever to the 10-unit detent to fully extend the slats.

 (a)  
Make sure that the slat extends from the intermediate to the full extend position.

 S 794-039
 (19) Examine the hydraulic fittings on the actuator and the swivel fittings for leakage.
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A
737-300/400/500MAINTENANCE MANUAL
 S 724-029
 (20)
 Do a test of the leading edge slat standby hydraulic system:

 (a)  
Move the flap control lever to the FLAP UP detent.

 (b)  
Supply electrical power (Ref 24-22-00/201).

 1)  Make sure that power is available on No. 1 and 2 generator buses.

 (c)  
Make sure these switches are in the OFF positions:
 1) The alternate flap arm switch
 2) The System A Flight Control switch
　
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