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Page 403
Oct 10/2003
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Flight Controls Shutoff Valve Installation
Figure 401 (Sheet 2 of 3)/27-09-31-990-801
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-09-31
Page 404
Oct 10/2003
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Flight Controls Shutoff Valve Installation
Figure 401 (Sheet 3 of 3)/27-09-31-990-801
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-09-31
Page 405
Oct 10/2003
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
TASK 27-09-31-400-801
3. Flight Controls Shutoff Valve Installation
(Figure 401)
A. General
(1) This task is the installation of the flight controls shutoff valve assembly, which contains the motor
and the valve.
B. References
Reference Title
12-12-00-610-801 Hydraulic Reservoir Servicing (P/B 301)
27-09-31-710-801 Flight Controls Shutoff Valve Test (P/B 501)
SWPM 20-60-03 Standard Wiring Practices Manual
C. Consumable Materials
Reference Description Specification
D00054 Fluid - Hydraulic Assembly Lubricant - MCS 352B
(Formally Monsanto MCS 352B)
D00153 Fluid - Hydraulic, Erosion Arresting, Fire Resistant BMS3-11, Type
IV
(interchange~
able&
intermixable
with Type V)
G01912 Lockwire - Monel (0.032 In. Dia.) NASM20995N~
C32
(QQ-N-281)
G50171 Compound - Corrosion Inhibiting Compound,
Interior Application - D5026NS or ZC-026
D. Expendables/Parts
AMM Item Description AIPC Reference AIPC Effectivity
12 Packing 27-09-21-01-105 GUN 001-028, 101-121,
155-157, 201-999
E. 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
F. Flight Controls Shutoff Valve Installation
SUBTASK 27-09-31-420-001
(1) If they are not installed, install the packings [12], backup rings [11], packings [10] and backup
rings [9]:
(a) Apply MCS 352B fluid, D00054 (preferred) or fluid, D00153 (alternative) to the packings [12],
backup rings [11], packings [10] and backup rings [9].
(b) Install the packings [12], backup rings [11], packings [10] and backup rings [9] on the valve
[8].
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-09-31
Page 406
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
SUBTASK 27-09-31-420-002
(2) Install the valve [8]:
(a) Carefully install the valve [8] in the hydraulic module housing [5].
(b) Install the bolts [2] and washers [3] to attach the valve [8] to the hydraulic module housing
[5].
(c) Tighten the bolts [2] to 30-40 pound-inches (3.4-4.5 newton-meters).
(d) Install the lockwire, G01912 on the four bolts [2].
(e) Before you connect the electrical connector [1], examine the connector for corrosion.
WARNING: DO THE STEPS BELOW IF THE AIRPLANE OPERATES AT AIRPORTS WHERE
DEICING FLUID THAT CONTAIN POTASSIUM FORMATE IS USED. ALSO DO THE
STEPS FOR ALL AIRPLANES THAT YOU FOUND CORROSION IN THE
ELECTRICAL CONNECTORS IN THE MAIN WHEEL WELL. THE ELECTRICAL
CONNECTOR IS PART OF A SYSTEM THAT IS NECESSARY FOR SAFE FLIGHT.
(f) If there was corrosion, refer to (SWPM 20-60-03) to correct the problem.
(g) Apply the D5026NS or ZC-026 compound, G50171 to the connector (SWPM 20-60-03).
(h) Connect the electrical connector [1] to the valve motor [6].
G. Put the Airplane Back to Its Usual Condition
SUBTASK 27-09-31-860-014
(1) If you removed the left shutoff valve:
Remove the safety tag and close this circuit breaker:
F/O Electrical System Panel, P6-2
Row Col Number Name
B 13 C00363 FLIGHT CONTROL SHUTOFF VALVES FLT CONT
SUBTASK 27-09-31-860-004
(2) If you removed the right shutoff valve:
Remove the safety tag and close this circuit breaker:
F/O Electrical System Panel, P6-2
Row Col Number Name
C 13 C01074 FLIGHT CONTROL SHUTOFF VALVES FLT CONT
SUBTASK 27-09-31-610-001
(3) If it is necessary to service the hydraulic reservoirs, do this task: Hydraulic Reservoir
Servicing, TASK 12-12-00-610-801.
SUBTASK 27-09-31-730-001
(4) Do this task: Flight Controls Shutoff Valve Test, TASK 27-09-31-710-801.
------------------------- END OF TASK ---------------------------
　
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