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SPOILER SHUTOFF VALVE - ADJUSTMENT/TEST
1. General
A. There is one task in this procedure which is the test of the spoiler shutoff valve.
B. The spoiler shutoff valve is part of the flight controls hydraulic module. The spoiler shutoff valve is
installed on the left side of the flight controls hydraulic module.
C. The flight controls hydraulic module for the hydraulic system A is installed in the left main wheel well.
The flight controls hydraulic module for the hydraulic system B is installed in the right main wheel
well.
TASK 27-61-12-400-803
2. Spoiler Shutoff Valve Test
A. References
Reference Title
24-22-00-860-811 Supply Electrical Power (P/B 201)
29-11-00-860-801 Hydraulic System A or B Pressurization (P/B 201)
29-11-00-860-805 Hydraulic System A or B Power Removal (P/B 201)
B. 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
C. Prepare for the Operational Test
SUBTASK 27-61-12-860-007
(1) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-61-12-860-008
(2) Make sure that this circuit breaker is closed:
F/O Electrical System Panel, P6-2
Row Col Number Name
B 12 C00204 FLIGHT CONTROL SHUTOFF VALVES SPOILER
SUBTASK 27-61-12-860-009
(3) To pressurize hydraulic systems A and B, do this task: Hydraulic System A or B
Pressurization, TASK 29-11-00-860-801.
D. Spoiler Shutoff Valve Test
SUBTASK 27-61-12-720-001
(1) Do the test of the spoiler shutoff valve [1]:
(a) Move the two SPOILER switches, on the P5-3 Flights Control panel, to the OFF position and
then to the ON position (Figure 501).
(b) Make sure the manual override levers [2] of the two spoiler shutoff valves [1] are in position
1 (Figure 502).
(c) Move one of the two aileron control wheels to bleed the hydraulic system.
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(d) Make sure there is no leakage of hydraulic fluid at the spoiler shutoff valves [1].
(e) Move the aileron control wheel to make sure the flight spoilers operate correctly.
(f) Set the two SPOILER switches to the OFF position.
(g) Make sure the manual override levers [2] of the two spoiler shutoff valves [1] are in position
2.
(h) Move the aileron control wheel to make sure that the flight spoilers do not operate.
E. Put the Airplane Back to Its Usual Condition
SUBTASK 27-61-12-860-010
(1) Set the SPOILER switches to the ON position.
SUBTASK 27-61-12-860-011
(2) To remove power from hydraulic systems A and B, do this task: Hydraulic System A or B
Power Removal, TASK 29-11-00-860-805.
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Flight Controls Panel
Figure 501/27-61-12-990-802
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Spoiler Shutoff Valve Test
Figure 502 (Sheet 1 of 3)/27-61-12-990-803
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Spoiler Shutoff Valve Test
Figure 502 (Sheet 2 of 3)/27-61-12-990-803
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Spoiler Shutoff Valve Test
Figure 502 (Sheet 3 of 3)/27-61-12-990-803
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