C.
Access
(1)
Location Zone
217 Right Main Wheel Well
D.
Procedure
S 864-002
(1)
Retract the trailing edge flaps if it is necessary:
(a)
Do this task: "Hydraulic System B Pressurization" (Ref 27-51-00/201).
(b)
Put the flap control lever in the UP detent to retract the flaps.
(c)
Do this task: "Hydraulic System B Depressurization" (Ref 27-51-00/201).
(2)
Remove the lower pan from the flap control unit (Fig. 401).
(3)
Install the rig pin F-1 through the follower arm and the valve cam.
S 024-005
(4)
Remove the control valve:
(a)
Remove the two plug buttons from the control unit housing.
S 014-003
S 084-004
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
SEE A
LEADING EDGE FLAP CONTROL VALVE
FLAP CONTROL VALVE TRAILING EDGE
SEE C MOUNTING BOLT (4 LOCATIONS)
BELLCRANK BSEE FWD
NOTE:____ WITH THE LOWER PAN REMOVED. THE FLAP CONTROL UNIT IS SHOWN A
Figure 401 (Sheet 1) Trailing Edge Flap Control Valve Installation
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
TRAILING EDGE FLAP CONTROL VALVE
BOLT
SPACER
BELLCRANK
FWD INBD
B
RIG PIN F-1
CAM
FWD
INBD
C
Trailing Edge Flap Control Valve Installation Figure 401 (Sheet 2)
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A
737-300/400/500MAINTENANCE MANUAL
(b)
Remove the bolt and spacers that attach the control valve to the bellcrank.
(c)
Disconnect the hydraulic lines from the control valve: 1) Put a container below the flap control unit to catch the
hydraulic fluid. 2) Disconnect the hydraulic lines from the control valve. 3) Install the caps on the hydraulic ports and plugs in the
hydraulic lines.
(d)
Disconnect the electrical connector from the solenoid valve.
(e)
Remove the four bolts that attach the control valve to the flap control unit.
(f)
Carefully remove the control valve from the flap control unit.
TASK 27-51-79-404-006
3. Trailing Edge Flap Control Valve Installation
_____________________________________________
A. Special Tools and Equipment
(1) Rig Pin (F-1) - 0.311 +0.000/-0.002 inch diameter, 3.40 |0.06 inches long (MS20392-4)
NOTE: The rig pin is a part of the kit F70207-69, -78, or -83.
____
B. Consumable Materials
(1)
A00247 Sealant - BMS 5-95, Class B
(2)
D00633 Grease - BMS 3-33 (Recommended)
(3)
D00013 Grease - MIL-G-23827 (Alternate)
(4)
D00196 Hydraulic Fluid - BMS 3-11
