C.
Access
(1)
Location Zone
101 Control Cabin, LH
102 Control Cabin, RH
217 Main Wheel Well, RH
D.
Prepare for the Adjustment
S 865-001
(1)
Pressurize hydraulic system B (Ref 27-81-00/201).
S 865-002
(2)
Put the flap control lever to the FLAP UP detent.
S 865-003
(3)
After 5 minutes, release the pressure from hydraulic system B (Ref 27-81-00/201).
(4)
Remove the lower pan from the flap control unit.
S 495-005
(5)
Install rig pin F-1 in the flap control unit (Fig. 501).
E.
Adjust the Leading Edge Flap and Slat Control Valve
S 035-004
S 825-015
(1)
Adjust the control valve:
(a)
Remove the lockwire.
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27-81-81
ALL ú ú 01 Page 501 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500
MAINTENANCE MANUAL
SEE A
FLAP CONTROL QUADRANT QUADRANT STOP
SEE C
TRAILING EDGE VALVE FLAP CONTROL
NOTE: FLAP CONTROL UNIT SHOWN WITH LOWER PAN REMOVED SEE B A LEADING EDGE FWD FLAP CONTROL VALVE
Figure 501 (Sheet 1) Leading Edge Flap and Slat Control Valve Adjustment
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27-81-81
ALL ú ú 01 Page 502 ú Feb 25/85
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
RIG PIN F-1
CAM FOLLOWER
CAM
1.00 INCH MAX THREAD ENGAGEMENT
FWD
LEADING EDGE LINK
TRAILING EDGE
CAM LINK
B
CONTROL VALVE
INDEX SURFACE
VALVE SLIDE
|0.010 INCH
C
Leading Edge Flap and Slat Control Valve Adjustment
Figure 501 (Sheet 2)
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27-81-81
ALL ú ú 01 Page 503 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
(b)
Loosen the checknut.
(c)
Remove the rod end bolt of the cam follower arm.
(d)
Turn the rod end in one half turn increments to get the adjustment.
(e)
Install the rod end bolt.
(f)
Make sure the valve slide and the index surface align to a range of |0.010 inch.
(g)
Install the washer and locknut.
(h)
Tighten the checknut.
(i)
Install the lockwire.
(j)
Make sure that you can see not more than 1.00 inch of the rod end threads (Fig. 501).
S 095-006
(2)
Remove the rig pin F-1.
S 435-007
(3)
Install the lower pan on the flap control unit.
S 715-008
(4)
Do a test of the control valve.
TASK 27-81-81-715-011
3. Leading Edge Flap and Slat Control Valve Test_____________________________________________
A. References
(1)
27-81-00/201, Leading Edge Flap and Slat Control System
B.
Access
(1)
Location Zone
101 Control Cabin, LH
102 Control Cabin, RH
217 Main Wheel Well, RH
C.
Procedure
S 715-013
(1)
Do a test of the control valve:
(a)
Pressurize hydraulic system B (Ref 27-81-00/201).
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