SEE  A 
WHEEL WELL AFT BULKHEAD 
STANDBY RUDDER ACTUATOR SHUTOFF VALVE BSEE 
LEADING EDGE STANDBY DRIVE SHUTOFF VALVE 
VALVE MOTOR 
MODULAR PACKAGE  FWD  MANUAL OVERRIDE LEVER  SCREWS BOLT 
A  VALVE 
VALVE CAM 
O-RINGS (5 LOCATIONS) 
B SHUTOFF VALVE 
Figure 201 Standby Rudder Actuator Shutoff Valve Installation 

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 27-21-94
 ALL  ú ú 01 Page 202 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 482-056
 CAUTION:_______DO NOT LET HYDRAULIC FLUID GET ON EQUIPMENT. IF HYDRAULIC FLUID GETS ON EQUIPMENT, IMMEDIATELY CLEAN IT FROM THE EQUIPMENT. HYDRAULIC FLUID CAN CAUSE DAMAGE TO THE EQUIPMENT.
 (3)  
Put a container below the shutoff valve to catch the hydraulic fluid.

 S 022-057

 (4)  
Carefully turn and pull directly up on the shutoff valve to remove it from the modular package.

 S 032-058

 (5)  
Put a cover on the modular package to keep dirt out.

 TASK 27-21-94-402-049
 3.  Standby Rudder Actuator Shutoff Valve Installation (Fig. 201)__________________________________________________
 A. Consumable Materials
 (1)  
D00153 Hydraulic Fluid - BMS 3-11

 (2)  
D00054 Hydraulic System Lubricant - MCS 352

 B.
References

 (1)  
12-12-00/301, Hydraulic Reservoir

 C.
Access

 (1)  
Location Zones
 216 Left Main Wheel Well

 D.
Procedure

 S 422-059
 (1)  
Install five 0-rings with backup rings on the valve.

 S 642-060

 (2)  
Lubricate the 0-rings and backup rings with hydraulic fluid or hydraulic system lubricant.

 (3)  
Carefully put the shutoff valve in the modular package.

 S 422-062

 (4)  
Install the four bolts that attach the shutoff valve to the modular package. Tighten the bolts to 30-40 pound-inches.

 (5)  
Install lockwire on the four bolts.

 S 422-061
 S 422-063
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-94
 ALL  ú ú 01 Page 203 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 422-064
 (6)  
Connect the electrical connector to the valve motor.

 S 712-065

 (7)
Do the task that is below to do a test of the shutoff valve.

 S 612-066

 (8)  
Fill the hydraulic reservoir if it is necessary (Ref 12-12-00/301).

 TASK 27-21-94-002-050
 4.  Valve Motor Removal (Fig. 201)___________________
 NOTE:____Use this procedure to replace the valve motor only. To replace the shutoff valve and the valve motor, use the removal and installation procedure for the standby rudder actuator shutoff valve.
 A. References
 (1)  
27-21-00/201, Rudder and Rudder Trim Control System

 B.
Access

 (1)  
Location Zones
 216 Left Main Wheel Well

 C.
Prepare for the Removal

 S 862-067
 (1)  
Remove hydraulic power (Ref 27-21-00/201).

 S 862-068

 (2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6 panel,
 1) FLT CONTR
 2) STBY RUDDER

 D.
Remove the Valve Motor

 S 022-069
 (1)
Disconnect the electrical connector from the valve motor.

 (2)  
Move the manual override lever to position 2.

 (3)
Remove the four screws that attach the valve motor to the valve.

 (4)  
Remove the valve motor from the valve.

 S 862-070
 S 022-071
 S 022-072
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