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SUBTASK 27-81-91-720-001
(3) Do this task: Leading Edge Standby Shutoff Valve Test, TASK 27-81-91-720-801.
------------------------- END OF TASK ---------------------------
TASK 27-81-91-000-802
4. Standby Shutoff Valve Motor Removal
(Figure 201)
A. General
(1) You can remove the valve motor with the valve installed in the standby flight controls hydraulic
module.
B. References
Reference Title
32-00-01-480-801 Landing Gear Downlock Pins Installation (P/B 201)
C. Location Zones
Zone Area
133 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Left
211 Flight Compartment - Left
212 Flight Compartment - Right
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-81-91
Page 206
Jun 10/2004
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
D. Prepare for the Removal
SUBTASK 27-81-91-480-002
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 27-81-91-860-005
(2) Open this circuit breaker and install safety tag:
F/O Electrical System Panel, P6-2
Row Col Number Name
A 7 C00210 FLIGHT CONTROL FLAP SHUTOFF VALVES
E. Standby Shutoff Valve Motor Removal
SUBTASK 27-81-91-020-002
(1) Remove the valve motor [2]:
(a) Disconnect the electrical connector [1] from the valve motor [2].
(b) Set the manual override lever [4] on the valve motor [2] to POSITION 2.
(c) Remove the screws [14] that attach the valve motor [2] to the valve [13].
(d) Remove the valve motor [2] from the valve [13].
------------------------- END OF TASK ---------------------------
TASK 27-81-91-400-802
5. Standby Shutoff Valve Motor Installation
(Figure 201)
A. General
(1) You can install the valve motor with the valve installed in the standby flight controls hydraulic
module.
B. References
Reference Title
SWPM 20-60-03 Standard Wiring Practices Manual
C. Consumable Materials
Reference Description Specification
G50171 Compound - Corrosion Inhibiting Compound,
Interior Application - D5026NS or ZC-026
D. Location Zones
Zone Area
133 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Left
211 Flight Compartment - Left
212 Flight Compartment - Right
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-81-91
Page 207
Oct 10/2003
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
E. Standby Shutoff Valve Motor Installation
SUBTASK 27-81-91-420-003
(1) Install the valve motor [2]:
(a) Make sure the manual override lever [4] on the valve motor [2] is set to POSITION 2.
(b) Set the valve motor [2] on the valve [13]
(c) Engage the valve motor [2] with the valve cam [7].
(d) Install the four screws [14].
(e) Install the lockwire on the screws [14].
(f) 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.
(g) If there was corrosion, refer to (SWPM 20-60-03) to correct the problem.
(h) Apply the D5026NS or ZC-026 compound, G50171 to the connector (SWPM 20-60-03).
(i) Connect the electrical connector [1] to the valve motor [2].
NOTE: Corrosion inhibiting compound is applied to the exterior of the mated electrical
connectors after the operational test is completed.
F. Put the Airplane Back to Its Usual Condition
SUBTASK 27-81-91-860-006
(1) Set the manual override lever [4] on the valve motor [2] to position 1.
SUBTASK 27-81-91-860-007
(2) Remove the safety tag and close this circuit breaker:
F/O Electrical System Panel, P6-2
Row Col Number Name
A 7 C00210 FLIGHT CONTROL FLAP SHUTOFF VALVES
SUBTASK 27-81-91-720-002
(3) Do this task: Leading Edge Standby Shutoff Valve Test, TASK 27-81-91-720-801.
------------------------- END OF TASK ---------------------------
TASK 27-81-91-720-801
6. Leading Edge Standby Shutoff Valve Test
(Figure 202)
A. References
Reference Title
　
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