(a)  
Remove the bolt that attaches the foreflap to the exhaust gate actuation rod.

 (b)  
Remove the bolts which attach the foreflap to the foreflap sequence carriage at each flap track.

 (c)  
Remove the bolts which attach the foreflap links to the foreflap track.

 (d)  
Remove the foreflap from the airplane.

 NOTE: The foreflap weighs approximately 64 pounds.
____
 TASK 27-51-37-404-009
 3.  Outboard Foreflap Installation______________________________
 A. References
 (1)  
27-51-00/201, Trailing Edge Flap System

 (2)  
27-51-34/501, Outboard Trailing Edge Flap

 (3)  
29-15-00/201, Hydraulic Systems A, B, and Standby

 B.
Access

 (1)  
Location Zones 307, 407 Wing Trailing Edge, Outboard Flap and Spoilers

 C.
Procedure

 S 224-029
 (1)  If you will install used parts, do this task: Outboard Foreflap Sequence Carriage Inspection (AMM 27-51-47/601).
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 ALL  ú ú 02 Page 405 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 424-025
 (2)  
Install the Outboard Foreflap (Fig. 401):

 (a)  
Attach the foreflap to the foreflap sequence carriage on each flap track: 1) Align the fittings on the foreflap to the lugs on the

 sequence carriage. 2) Install the fasteners on the foreflap sequence carriage. 3) Tighten the nuts to 60-85 pound-inches. 4) Install cotter pins in the fasteners.

 (b)  
Install the fasteners to attach the foreflap links to the foreflap tracks.

 NOTE: Make sure the foreflap tracks on the leading edge of the
____ midflap are installed with the proper orientation (Fig. 402).
 (c)  Install the bolt that attaches the exhaust gate actuation mechanism to the foreflap. 1) Tighten the nut.
 S 224-015
 (3)  
Make sure you installed the foreflap correctly:

 (a)  
Apply the minimum force necessary to make the foreflap sequence carriages touch the track stops on the flap tracks. Make sure the deadweight rollers touch the top surface of the flap track.

 (b)  
Measure the clearance between the toggle roller and the forward side of the toggle detent.

 NOTE: The clearance must be a minimum of 0.02 inch.
____
 S 444-016
 (4)  Do this task: "Trailing Edge Flap System Activation" (Ref 27-51-00/201).
 S 864-026
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (5)  Do this task to pressurize hydraulic system B: "Pressurize Hydraulic System A, B, or Standby" (Ref 29-15-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 864-027
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE TRAILING
_______ EDGE FLAPS, THE LEADING EDGE FLAPS AND SLATS AND THE DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (6)  
Move the flap control lever to the flaps position 0 (flaps up) detent to retract the flaps.

 (a)  
Make sure that the flaps move smoothly.

 S 864-021
 (7)  
Do this task to depressurize hydraulic system B: "Depressurize Hydraulic System A, B, or Standby" (Ref 29-15-00/201).

 S 224-022

 (8)  
Examine the clearance between the trailing edge of the foreflap and the top of the midflap (Ref/27-51-34/501):
　
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