500  Flap Transmission Assembly Adjustment 
Dec 15/70  Figure 403  27-51-72 
Page 407 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

E.  Align foreflap fitting with lugs on sequencing carriage and install bolt. Secure bolt with washer and nut. Tighten nut to 60-85 pound-inches and install cotter pin.
NOTE:  One hundred forty pound-inches maximum torque range allowed for alignment of nut and hole for cotter pin.
F.  Remove flap restraining support and roll flap fore and aft to check operation of toggle. Check that foreflap is loose and free in all positions between 0 degrees and 5 degrees on retract cycle. If no play is evident check that minimum clearance between foreflap sequencing carriage rubstrips and track surface throughout carriage cycle is per Section B-B, Fig. 401.
G.  Align foreflap link assemblies with foreflap tracks and install bolts and tighten nuts.
H.  With sequencing carriage engaged to stop on track and deadweight rollers contacting track upper surface, check that minimum clearance between outside diameter of toggle roller and forward slope of slot is per View 1, Fig. 401.
I.  With ball nut position maintained and flap supported so that weight of flap is off trunnions, install gimbal bushings on jackscrew fitting (Fig. 403). Coat outer surface of bushings with corrosion preventive compound before installation. Ensure that shims are installed in position noted during removal, and that there is proper clearance between bushings and gimbal (Section A-A, Fig. 403).
J.  Install three bolts to secure each gimbal bushing.
K.  Install and tighten gimbal bushing clamp-up bolts to 60-85 pound-inches.
L.  Remove flap drive screw support assembly from flap track.
M.  Install hinged flap (Ref 27-51-51, Removal/Installation).
N.  Provide system A hydraulic power (Ref 27-51-0).
O.  Modulate hydraulic pressure and flow to slowly retract flaps. Hold in retracted position for 2 minutes.
P.  Remove system A hydraulic power (Ref 27-51-0).
Q.  Check that upstops on ball bearing nuts are 170 to 190 degrees (1/2 turn + 10 degrees) turns from upstops on jackscrews.
R.  Connect torque tubes to couplings on transmission assembly. Lockwire heads of torque tube screws together.
S.  Check that speed brake control lever is in UP position.
T.  Check that flap control lever is in 40-unit detent.
U.  Remove flight spoiler ground locks.
V.  Provide system A and B hydraulic power (Ref 27-51-0).
W.  Position speed brake control lever to DOWN position to lower spoilers.
X.  Remove system A and B hydraulic power (Ref 27-51-0).
Y.  Adjust flap (Ref AMM 27-51-72, Adjustment/Test).
543 
27-51-72 Page 408  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Nov 15/79 

OUTBOARD TRAILING EDGE FLAP - ADJUSTMENT/TEST
1.  Outboard Trailing Edge Flap Adjustment
A.  Equipment and Materials
(1)  
Flap Drive Adapter - F70300-1 (Preferred) or ST2583-1 (Optional)

(2)  
Outboard Flap Rigging Tools:

(a)  
Outboard Flap Rigging Beam - F80209-2 (Preferred)

NOTE:  Rigging Beam is a part of F80209-1.

(b)  
Outboard Flap Rigging Tool - TE65-73720-1 and -2 (Optional) (Ref 27-09-700)

(3)  
Control Column Protractor Assembly 4MIT65B80307-1 (Preferred) or F52485-500 (Optional)

(4)  
Protractor Stand Assembly - F71292-17

(5)  
Primer - BMS 10-11, Type I (Ref 20-30-41)

(6)  
Corrosion Preventive Compound - MIL-C-11796, Class 3 (Ref 20-30-21)

(7)  
Pressure, Environmental and Fuel Cavity Sealant - BMS 5-79 (Ref 20-30-11)

(8)  
Modeling Clay (Ref 20-30-51)

B.  Prepare for Adjustment
(1)  
Install flap track fairing (Ref 27-51-121 R/I).

(2)  
Position flap control lever to FLAPS UP detent.

(3)  
Provide system A hydraulic power (Ref 27-51-0 MP).

(4)  
Modulate hydraulic pressure and flow to slowly retract flaps. Hold in retracted position for 2 minutes.

(5)  
Turn off system A hydraulic power and depressurize hydraulic system A (Ref 27-51-0 MP).

C.  Adjust Outboard Trailing Edge Flap
NOTE:  When you turn the flap drive torque tubes to get 1 turn of the inboard flap jackscrews, you get a 1/2 turn of the outboard flap jackscrews.
　
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