(2)  
O-ring Installation Tool ST848

 (3)  
Torque Wrench

 B.  Consumable Material
 (1)  
G00062 Fluid - Hydraulic, Fire Resistant, BMS 10-11

 (2)  
D00054 Lubricant - Assembly, Skydrol, MCS352

 C.  References
 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 20-11-19/401, O-Ring

 (3)  
AMM 20-11-28/401, Lockwire

 (4)  
AMM 20-22-01/601, Electrical Bonding

 (5)  
AMM 24-22-00/201, Manual Control

 (6)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (7)  
AMM 32-00-30/201, Landing Gear Door Locks

 D.  Access
 (1)  Location Zone
 135 Left Wing Landing Gear Well

 E.  Prepare for Installation
 S 862-053
 (1)  
Make sure that hydraulic system 1 has no hydraulic pressure (AMM 29-11-00/201).

 S 862-017

 (2)  
Make sure the circuit breakers shown below are open and DO-NOT-CLOSE tags are attached:

 (a)  P7, Overhead Circuit Breaker Panel
 1) 7D12, FLT CONT CMPTR SERVO C

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 2) 7D13, FLT CONT CMPTR PWR C 3) 7E9, MCP L 4) 7E18, MCP R
 (b)  P180, DC Power Distribution Panel
 1) 180H7, LATERAL CONT VLV SYS 1

 F. Valve Installation
 S 422-054
 (1)  Do these steps to install the valve:
 CAUTION:  DO NOT LET THE HYDRAULIC FLUID GET INTO THE ELECTRICAL CONNECTOR. THIS CAN CAUSE DAMAGE AND/OR FAILURE OF THE DEVICE.
 (a)  
Remove the covers from the electrical and hydraulic openings on the LAS.

 (b)  
Clean the mating surfaces of the valve and the LAS with clean hydraulic fluid.

 (c)  
Apply a thin layer of MCS352 lubricant to the new seal and the O-ring.

 (d)  
Install the new O-ring on the valve (AMM 20-11-19/401).

 (e)  
Put the gasket plate on the LAS.

 (f)  
Install the valve on the LAS with mounting bolts and washers. Tighten the mounting bolts to 50-70 pound-inches.

 (g)  
Use the bonding meter to make sure that the resistance between the valve and the LAS body is 0.005 ohms or less (AMM 20-11-28/401).

 (h)  
Put the lockwire through the mounting bolts (AMM 20-11-28/401).

 TASK 22-13-02-722-064
 4.  Lateral Autopilot Servo Electrohydraulic Servovalve and Solenoid Valve Test____________________________________________________________________________
 A. References
 (1)  
AMM 21-58-00/501, Electrical/Electronic Equipment Cooling System

 (2)  
AMM 22-10-00/501, Autopilot/Flight Director System

 (3)  
AMM 24-22-00/201, Manual Control

 (4)  
AMM 29-11-00/201, Main Hydraulic Supply System

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 ALL  ú ú 01 Page 205 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (5)  Location Zone
 135 Left Wing Landing Gear Well
 121 Control Cabin
 122 Control Cabin

 B. Prepare for Test
 S 862-072
 (1)  
Supply electrical power (AMM 24-22-00/201)

 S 862-073

 (2)  
Put the FLT CONTROL HYD POWER WING 1, 2, 3, and 4 switches to the NORM position. The switches are found on the Pilots Overhead Maintenace Panel (P461).

 S 862-074

 (3)  
Make sure the circuit breakers shown below are closed and DO-NOT-CLOSE tags are removed.

 (a)  
P7, Overhead Circuit Breaker Panel
 1) 7D7, FLT CONT CMPTR SERVO L
　
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