27-21-94
 ALL  ú ú 01 Page 204 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 TASK 27-21-94-402-046
 5. Valve Motor Installation (Fig. 201)
________________________
 A. Access
 (1)  
Location Zones
 216 Left Main Wheel Well

 B.
Procedure

 S 862-073
 (1)
Move the manual override lever on the valve motor to position 2.

 S 422-074

 (2)
Put the valve motor on the valve and engage it with the valve cam.

 S 422-075

 (3)
Install the four screws to attach the valve motor to the valve.

 S 422-076

 (4)
Install lockwire on the screws.

 S 422-077

 (5)
Connect the electrical connector to the valve motor.

 S 712-078

 (6)
Do the task that is below to do a test of the shutoff valve.

 TASK 27-21-94-712-047
 6. Standby Rudder Actuator Shutoff Valve Test (Fig. 201)
__________________________________________
 A. References
 (1)
24-22-00/201, Manual Control

 (2)
27-21-00/201, Rudder and Rudder Trim Control System

 B.
Access

 (1)  
Location Zones
 101 Control Cabin - Left
 216 Left Main Wheel Well

 C.
Procedure ú ú S 862-079 ú (1) Supply electrical power (AMM 24-22-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-94
 ALL  ú ú 02.1 Page 205 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 ú ú S 862-104 ú (2) Supply hydraulic pressure (AMM 27-21-00/201).
 S 862-080
 (3)  
Make sure these circuit breakers are closed and remove the DO-NOT-CLOSE tags:

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

 S 212-081
 (4)  
Make sure the FLIGHT CONTROL A and B switches (on the upper left corner of the pilot's overhead panel) are in the ON position.

 S 212-082

 (5)  
Make sure the manual override lever on the shutoff valve is at position 1.

 S 862-083
 WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM THE RUDDER WHEN YOU SUPPLY
_______ HYDRAULIC POWER. THE RUDDER CAN MOVE AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT WHEN YOU SUPPLY HYDRAULIC POWER.
 (6)  
Put the FLIGHT CONTROL A switch to the STDBY RUD position and put the FLIGHT CONTROL B switch to the OFF position.

 S 212-098

 (7)  
Verify the B FLT CONTROL LOW PRESSURE light is on.

 S 212-084

 (8)  
Make sure the manual override lever on the shutoff valve is at position 2.

 S 712-085

 (9)  
Move the rudder pedals to the left forward stop and to the right forward stop at a high rate for a total of 5 times each.

 NOTE: The rudder will move left if you push the left rudder pedal.
____ The rudder will move right if you push the right rudder pedal.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-94
 ALL  ú ú 02.1 Page 206 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 712-099
 (10)
 Move the left rudder pedal full left and slowly release.

 (a)  
Make sure that the rudder pedal returns to the neutral position.

 S 712-100
 (11)
 Move the right rudder pedal full right and slowly release.

 (a)  
Make sure that the rudder pedal returns to the neutral position.

 S 792-044
 (12)
 Make sure there is no hydraulic fluid leakage from the shutoff valve.

 S 212-097

 (13)
 Put both the FLIGHT CONTROL A and FLIGHT CONTROL B switches to the ON positions.
　
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