S 014-003
 (2)  
Remove the applicable access panels or fairings as specified below:

 (a)  
For ballscrews of the outboard flap transmissions, remove the flap track fairing (AMM 27-51-52/401).

 (b)  
For the ballscrew of the No. 3 transmission, remove access panels 5735 and 5736.

 (c)  
For the ballscrew of the No. 6 transmission, remove access panels 5835 and 5836.

 (d)  
Get access to the ballscrews of the No. 4 and No. 5 transmission: 1) Remove the inboard flap track fairing access panel from the

 wheel well, to permit access to the ballscrew from the inboard side (AMM 27-51-32/401).
 S 864-075
 (3)  Do these steps to fully retract the trailing edge flaps:
 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.
 (a)  Supply system B hydraulic power (AMM 29-15-00/201).
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE
_______ AND TE FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL HANDLE. AN ACCIDENTAL FLAP MOVEMENT CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (b)  
Set the FLAP control lever to the flaps position 0 (flaps up) detent to retract the flaps.

 (c)  
Make sure that the flaps are fully retracted.

 (d)  
Remove system B hydraulic power (AMM 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 224-004
 (4)  
Measure the angular or linear clearance between the ball nut and the screw yoke at the ballscrew to be removed:

 (a)  
Measure the angular clearance between the upstops on the ball nut and the screw yoke: 1) At the ballscrews of the inboard flaps, make sure that the

 angular clearance is 170 to 190 degrees (approximately 1/2 turn).
 2)  At the ballscrews of the outboard flaps, make sure that the angular clearance is as shown: a) 170 to 190 degrees (approximately 1/2 turn) for a flap
 without a torque tube adjustment to correct lateral trim. b) 90 to 300 degrees (1/4 to 5/6 turn) for a flap with a torque tube adjustment to correct lateral trim. 3) Make a record of the angular clearance dimension.
 (b)  Measure the linear clearance. 1) Measure the "X" dimension (Fig. 401) at the ball screw to
 be removed.
 2) Make a record of the "X" dimension.

 S 864-065
 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)  
Supply system B hydraulic power (AMM 29-15-00/201).

 S 494-006

 (6)  
For the removal of a ballscrew at the outboard flap transmissions, do these steps:

 (a)  
Move the FLAP control lever on the control stand to the 40-unit detent.

 (b)  
Install a support to hold the flap when a ballscrew is removed.

 S 864-007
 (7)  
For the removal of a ballscrew at the inboard flap transmissions, move the FLAP control lever to the 1-unit detent.

 S 044-008

 (8)  
Do this task: "Trailing Edge Flap System Deactivation" (AMM 27-51-00/201).

 S 494-009

 (9)  
If the ballscrew removal is at the No. 1, No. 2, No. 3, No. 6, No. 7, or No. 8 locations, install spoiler ground locks.

 (a)  
Supply system A hydraulic power (AMM 29-15-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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