(g)
For the center servo: 1) 11E20, FLT CONT CMPTR PWR CENTER 2) 11E21, FLT CONT CMPTR SERVO CENTER
(h)
For the right servo: 1) 11E35, FLT CONT CMPTR PWR RIGHT 2) 11E36, FLT CONT CMPTR SERVO RIGHT
S 862-008
(7) Remove the access panel 324AL at the base of the vertical fin (left side) to gain access to the rudder control servos (Ref 06-42-00).
D. Remove the Valve
S 142-009
CAUTION: DO NOT LET CONTAMINATION GET INTO THE AUTO PILOT ROLLOUT
_______ GUIDANCE SERVO. THE AUTOPILOT ROLLOUT GUIDANCE SERVO IS A VERY SENSITIVE ELECTROHYDRAULIC DEVICE. CONTAMINATION IN THE SYSTEM CAN CAUSE DAMAGE TO THE EQUIPMENT OR FAILURE.
(1)
Carefully clean the external areas of the valve and around the valve mounting surface.
S 032-010
(2)
Remove the lockwire.
S 022-011
(3)
Remove the screws, the valve with O-ring, and the seal plate from the servo assembly.
S 432-012
(4)
Put covers on the hydraulic and the electrical servo openings to make sure contamination does not get into them.
TASK 22-13-02-402-013
3. Install the ARGS Electrohydraulic Servovalve or Solenoid Valve (Fig. 201)______________________________________________________________
A. Equipment
(1) Nose Gear Steering Valve Lockpin - A09003-1
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A/P ROLLOUT GUIDANCE SERVOS (3)
SEE A
ACCESS PANEL, 324AL
ELECTRICAL
CONNECTOR
O-RINGS
SEAL PLATE SEAL PLATES
SOLENOID VALVE NO. 1
SCREW AND WASHER (4 EACH VALVE)SOLENOID VALVE NO. 2
ELECTROHYDRAULIC SERVO VALVE
A
ARGS Electrohydraulic Servo Valve and Solenoid Valves Figure 201
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MAINTENANCE MANUAL
B. Consumable Materials
(1) D00148 Hydraulic Fluid - fire resistant, BMS 3-11
C. References
(1)
06-42-00/201, Empennage and Section 48 (Major Zone 300) Access Doors and Panels
(2)
09-11-00/201, Towing
(3)
22-00-02/201, Autoflight BITE
(4)
24-22-00/201, Electrical Power - Control
(5)
29-11-00/201, Pressurize/Depressurize Main Hydraulic System
D. Access
(1)
Location Zone
324 Vertical Stabilizer, Rear Spar to Trailing Edge
(2)
Access Panel
324AL Body to Fin Seal
E. Install the Valve
S 032-014
(1)
Remove the covers from the openings.
S 142-015
(2)
Clean the mating surfaces of the valve, the new seal plate, and the servo assembly with hydraulic fluid. Do not let hydraulic fluid go into the electrical connector.
S 432-016
(3)
Install a new O-ring on the valve electrical connector.
S 432-017
(4)
Install the valve and the new seal plate.
S 432-018
(5)
Install the screws with grease.
(a) Tighten the screws to 60 pound-inches.
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S 432-019
(6) Put a lockwire on the screws.
F. Test the ARGS Electrohydraulic Servovalve and Solenoid Valves
S 982-020
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