(b)  
With the flaps fully extended, make sure the angular clearance between the downstops on the ballscrew is a minimum of 1/4 turn.

 S 225-037
 (6)  
Make sure the opposite midflaps are symmetrical in the limit of 1 degree:

 (a)  
Install the protractor assembly on the midflaps: 1) On the inboard midflaps, install the protractor at the lower surface at the middle of the span.

 2)  On the outboard midflaps, install the protractor at the outboard flap track.

 (b)  
Put the flap control lever in the 40-unit position to extend the flaps.

 (c)  
On the outboard flap, lift the trailing edge of the midflap until the flight load rollers touch the flap track.

 (d)  
Make sure the angles for the opposite midflaps are symmetrical in the limit of 1 degree.

 (e)  
If the opposite flaps are not in the limit, adjust the flap transmissions: 1) Disconnect the torque tubes from the applicable

 transmissions. 2) Turn the input shafts on the transmissions until the
 opposite flaps are symmetrical. 3) Connect the torque tubes to the transmissions. 4) Install the screws to connect the coupling sleeves to the
 couplings. 5) Install the lockwire on the screws. 6) Do a check of the angular clearance of the ballscrew and
 the clearance of the seal again.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-00
 ALL  ú ú 02 Page 518 ú Nov 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 865-038
 (7)
Move the flap control lever to the UP detent to retract the flaps.

 S 865-039

 (8)
Remove the system B hydraulic power (AMM 27-51-00/201).

 S 825-040

 (9)
Adjust the flap limit switches (AMM 27-51-87/501).

 S 825-041

 (10)
 Adjust the flap position transmitters (AMM 27-58-01/501).

 S 735-042

 (11)
 Do the system test of the trailing edge flap system.

 TASK 27-51-00-735-043
 4.  System Test - Trailing Edge Flap System_______________________________________
 A. Standard Tools and Equipment
 (1)
0.04 inch thick SAE 1020 steel sheet (1.5 x 3.0 inch)

 (2)
Stopwatch

 B.
Consumable Materials

 (1)
C00259 Primer BMS 10-11, Type 1

 (2)
D00633 Grease BMS 3-33 (Recommended)

 (3)
D00013 Grease MIL-G-23827 (Alternate)

 C.
References

 (1)
SWPM 20-20-00, Standard Wiring Practices Manual

 (2)
AMM 24-22-00/201, Manual Control

 (3)
AMM 27-51-00/201, Trailing Edge Flap System

 D.
Access

 (1)  
Location Zone 101, 102 Control Cabin 205 Electronic Compartment 216, 217 Main Wheel Well 307, 407 Wing Trailing Edge Outboard Flap and Spoilers 309, 409 Wing Trailing Edge Inboard Flap and Spoilers

 E.
Procedure

 (1)
Supply the electrical power (AMM 24-22-00/201).

 S 865-044
 S 865-045
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, TRAILING EDGE FLAPS, LEADING EDGE FLAPS AND SLATS, SPOILERS LANDING GEAR AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2) Supply the system B hydraulic power (AMM 27-51-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-00
 ALL  ú ú 03 Page 519 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 865-046
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAPS. THE FLAPS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (3)  
Move the flap control lever to the UP detent to retract the flaps.

 (a)  
Stop for 2 minutes to permit the flaps to fully retract.
　
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