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BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
FLIGHT CONTROLS SHUTOFF VALVE AND VALVE MOTOR - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of the flight controls shutoff valve assembly (the valve and the valve motor)
(2) An installation of the flight controls shutoff valve assembly (the valve and the valve motor)
(3) A removal of the flight controls shutoff valve motor
(4) An installation of the flight controls shutoff valve motor.
B. The flight controls shutoff valve is part of the flight controls hydraulic module. The hydraulic module
for the hydraulic system A is found in the left main wheel well. The hydraulic module for the hydraulic
system B is found in the right main wheel well.
C. The flight controls shutoff valve is referred to as the "valve" and the flight controls shutoff valve motor
is referred to as the "valve motor" in this procedure.
D. You can replace the valve motor with the valve installed in the flight controls hydraulic module.
TASK 27-09-31-000-801
2. Flight Controls Shutoff Valve Removal
(Figure 401)
A. General
(1) This task is the removal of the flight controls shutoff valve assembly, which contains the motor
and the valve.
B. References
Reference Title
29-09-00-860-802 Hydraulic Reservoirs Depressurization (P/B 201)
29-11-00-860-805 Hydraulic System A or B Power Removal (P/B 201)
29-11-01-860-802 Hydraulic Reservoirs Depressurization (P/B 201)
32-00-01-480-801 Landing Gear Downlock Pins Installation (P/B 201)
C. Tools/Equipment
Reference Description
STD-1154 Container - 5 Gallon (19 Liters)
D. Location Zones
Zone Area
133 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Left
134 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Right
211 Flight Compartment - Left
212 Flight Compartment - Right
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-09-31
Page 401
Oct 10/2003
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
E. Prepare for the Removal
SUBTASK 27-09-31-480-001
WARNING: MAKE SURE THE DOWNLOCK PINS ARE INSTALLED ON ALL THE LANDING GEARS.
WITHOUT THE DOWNLOCK PINS, THE LANDING GEARS COULD RETRACT AND
CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) If the downlock pins are not installed on all the landing gears, do this task: Landing Gear
Downlock Pins Installation, TASK 32-00-01-480-801.
SUBTASK 27-09-31-860-001
(2) If there is power on hydraulic system A or B, remove hydraulic power. For applicable hydraulic
system, do this task: Hydraulic System A or B Power Removal, TASK 29-11-00-860-805.
NOTE: Remove power from hydraulic system A for the left shutoff valve. Remove power from
hydraulic system B for the right shutoff valve.
SUBTASK 27-09-31-860-002
(3) Do this task: Hydraulic Reservoirs Depressurization, TASK 29-11-01-860-802 or Hydraulic
Reservoirs Depressurization, TASK 29-09-00-860-802.
SUBTASK 27-09-31-860-013
(4) If you remove the left shutoff valve:
Open this circuit breaker and install safety tag:
F/O Electrical System Panel, P6-2
Row Col Number Name
B 13 C00363 FLIGHT CONTROL SHUTOFF VALVES FLT CONT
SUBTASK 27-09-31-860-003
(5) If you remove the right shutoff valve:
Open this circuit breaker and install safety tag:
F/O Electrical System Panel, P6-2
Row Col Number Name
C 13 C01074 FLIGHT CONTROL SHUTOFF VALVES FLT CONT
F. Flight Controls Shutoff Valve Removal
SUBTASK 27-09-31-020-001
(1) Remove the valve [8]:
(a) Disconnect the electrical connector [1] from the valve motor [6].
(b) Remove the four bolts [2] and washers [3] that attach the valve [8] to the hydraulic module
housing [5].
(c) Put a 5 gallon (19 liter) container, STD-1154 below the valve [8] to catch hydraulic fluid.
(d) Carefully lift the valve [8] straight up to remove it from the hydraulic module housing [5].
Discard the removed packings.
(e) Put a cover on the hydraulic module housing [5] to keep contamination out of the open
valve hole.
------------------------- END OF TASK ---------------------------
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-09-31
Page 402
Oct 10/2005
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Flight Controls Shutoff Valve Installation
Figure 401 (Sheet 1 of 3)/27-09-31-990-801
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-09-31
　
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