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 B.  The flight controls shutoff valve and the spoiler shutoff valve are parts of the flight controls modular package. The left valve is the spoiler shutoff valve, and the right valve is the flight controls shutoff valve.
 C.  The modular package for the hydraulic system A is found in the left main wheel well. The modular package for the hydraulic system B is found in the right main wheel well.
 D.  Refer to AMM 27-09-41/401 for procedures on removal and installation of the spoiler shutoff valve.
 TASK 27-09-31-004-040
 2.  Flight Controls Shutoff Valve Removal_____________________________________
 A.  General
 (1)  
This procedure is the removal of the shutoff valve assembly, which contains the motor and the valve. If it is necessary to only remove the motor, use the procedure in paragraph 4.

 B.  
References

 (1)  
AMM 29-09-00/201, Hydraulic Reservoir Pressurization System

 (2)  
AMM 29-15-00/201, Hydraulic Systems A, B, and Standby

 C.  
Access

 (1)  
Location Zones
 101 Control Cabin, LH
 102 Control Cabin, RH
 216 Main Wheel Well, LH
 217 Main Wheel Well, RH

 D.  
Prepare for Removal

 (1)
Remove hydraulic power systems A and B (AMM 29-15-00/201).

 S 864-050
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
SEE  A 
SPOILER SHUTOFF VALVE (REF)  MODULAR PACKAGE HOUSING  LOW PRESSURE WARNING SWITCH  VALVE MOTOR FLIGHT CONTROLS SHUTOFF VALVE SEE B 
2  1  MOUNTING SCREWS 
3  1  5  2 6  7 4  MOUNTING BOLTS 
VALVE MOTOR 
A  MOUNTING (4 LOCATIONS) SCREWS 
(4 LOCATIONS) BOLTS MOUNTING 
VALVE 
VALVE CAM 
O-RINGS (5 LOCATIONS) 
B 
Figure 401 Flight Controls Shutoff Valve Installation 

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 864-051
 (2)
Make sure you depressurize the reservoir (AMM 29-09-00/201).

 S 864-006

 (3)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6-2 Circuit Breaker Panel 1) SHUTOFF VALVES - FLT CONT (two locations)

 E.
Remove the Flight Controls Shutoff Valve

 S 424-041
 (1)  
Remove the shutoff valve:

 (a)  
Disconnect the electrical connector from the valve motor (Fig. 401).

 (b)  
Remove the four mounting bolts that attach the valve to the modular package housing.

 (c)  
Carefully turn and lift the shutoff valve straight up to remove it from the modular package housing.

 (d)  
Use a container to catch hydraulic fluid that drains from the valve.

 (e)  
Put a cover on the modular package housing to keep contamination out of the open valve hole.

 TASK 27-09-31-404-042
 3.  Flight Controls Shutoff Valve Installation__________________________________________
 A. General
 (1)  
This procedure is the installation of the shutoff valve assembly, which contains the motor and the valve. If it is necessary to only install the motor, use the procedure in paragraph 5.

 B.
Consumable Materials

 (1)  
D00288 Lubricant, Skydrol Assembly - MCS 352

 (2)  
D00148 Fluid-Hydraulic, BMS 3-11, Type IV, Class 1

 C.
References

 (1)  
AMM 12-12-00/301, Hydraulic Reservoirs

 (2)  
AMM 27-09-31/501, Flight Controls Shutoff Valve

 D.
Access

 (1)  
Location Zones
 101 Control Cabin, LH
 102 Control Cabin, RH
　
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