B. Install Spoiler Shutoff Valve Motor
(1)
On replacement of valve motor, move manual override lever to position 2.
(2)
Position valve motor on valve and engage motor drive with valve cam (Fig. 401).
(3)
Install four mounting screws.
(4)
Install lockwire on mounting screws.
(5)
Install electrical connector on valve motor.
(6)
Test shutoff valve. See Spoiler Shutoff Valve - A/T.
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27-09-221 Page 404 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Aug 15/67
SPOILER SHUTOFF VALVE - ADJUSTMENT/TEST
1. Spoiler Shutoff Valve Test
A. Test Spoiler Shutoff Valve
(1)
Connect electrical power to airplane.
(2)
Check that spoiler switches are ON.
(3)
Check that manual override lever on shutoff valve is at position 1.
(4)
Turn on hydraulic system B pump No. 1 or No. 2 to pressurize hydraulic system B.
(5)
If shutoff valve in modular package in left wheel well is being tested, open hydraulic interconnect valve to pressurize hydraulic system A.
(6)
Check for hydraulic leakage at shutoff valve.
(7)
Rotate aileron control wheel to bleed hydraulic system if required.
(8)
Actuate aileron control wheel and check response of spoilers.
(9)
Position spoiler switches to OFF.
(10)
Check that manual override lever on shutoff valve is at position 2.
(11)
Rotate aileron control wheel and check that spoilers do not operate.
B. Restore Airplane to Normal Configuration
(1)
Position spoiler switches to ON.
(2)
Turn off hydraulic system B pumps No. 1 and 2 and close hydraulic interconnect valve.
(3)
Determine whether there is any further need for electrical power on airplane; if not, disconnect electrical power.
500
May 15/67 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-09-221 Page 501
COMPENSATOR CARTRIDGE - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Hydraulic Fluid - BMS 3-11 or Assembly Lube - Skydrol MCS352
2. Remove Compensator Cartridge
A. If compensator cartridge in left wheel well is being removed, remove system A hydraulic power. If compensator cartridge in right wheel well is being removed, remove system B hydraulic power. Check that hydraulic reservoirs are depressurized. Refer to 27-61-0, Speed Brake Control System - MP.
B. Break lockwire and screw compensator cartridge from modular package.
CAUTION: BE PREPARED TO CATCH SPILLED HYDRAULIC FLUID. TAKE NECESSARY PRECAUTIONS TO PREVENT DIRT ENTERING COMPENSATOR CARTRIDGE CAVITY WHEN CARTRIDGE IS REMOVED.
3. Install Compensator Cartridge
A. Lightly lubricate O-rings with hydraulic fluid or assembly lube. Install O-rings on replacement compensator cartridge.
B. Screw compensator cartridge into modular package and tighten firmly by hand.
C. Lockwire compensator cartridge to modular package.
D. Pressurize hydraulic reservoirs. Refer to Chapter 29, Hydraulic Power.
E. Connect external electrical power to airplane.
F. Provide system B hydraulic power. Refer to 27-61-0.
G. If compensator cartridge in left wheel well was replaced, provide system A hydraulic power (Ref to 27-61-0).
500
Feb 15/73 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-09-231 Page 401
G02995
Compensator Cartridge Installation 500
27-09-231 Figure 401 May 15/67
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
H. Ensure that flight control switches are ON.
I. Check compensator cartridge for hydraulic leakage.
J. Remove systems A and B hydraulic power (Ref 27-61-0).
K. Remove electrical power if no longer required.
L. Check hydraulic reservoirs and service if required. Refer to Chapter 12, Hydraulic Servicing.
500
Feb 15/73 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-09-231 Page 403
LOW PRESSURE WARNING SWITCH - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Hydraulic Fluid - BMS 3-11 or Assembly Lube - Skydrol MCS352
2. Remove Low Pressure Warning Switch
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