TM 5-3810-300-24 & P2
INSTALLATION.
1. Place the ball seat in the ball socket and assemble the valve over the ball stud on the vehicle steering arm. Assemble
the ball seat, spring and ball socket end plug. Tighten the end plug until it "bottoms", then back it off until the nearest
set of holes in the socket line up with the slot in the end plug to permit installing the plug lock.
2. Attach the hydraulic lines to the valve ports. The front cover illustration shows the valve porting lines should be
attached to the same ports from which they were originally removed.
3. When installing the valve housing end plug, particular attention should be given to positioning it properly. The plug
provides a stop to limit and control the outward stroke of the valve piston. There should be 1/16 of an inch (.062)
maximum gap between the end of the ball socket and the face of the end plug, when the valve piston is in a neutral
and centered position.
To obtain the proper end plug position, proceed as follows:
After the power steering system is installed complete, fill the reservoir to the specified level with the type of oil
recommended. Start the engine to allow the hydraulic fluid to circulate through the system. Have the front axle jacked
up so the wheels clear. Turn the wheels to full right and full left a few times to allow the power cylinder and the lines to
fill. Check the fluid level in the reservoir and refill if necessary.
Increase the engine speed to about 750 or 800 RPM. The pressure in the hydraulic system will automatically center
the valve piston in neutral position.
Turn the housing end plug inward until there is 1/16 of an inch gap between the two end plugs. This dimension can be
measured by inserting a feeler gage shim (.062 width) between the plugs through the inspection hole in the valve
housing. Remove the gage and continue turning the end plug inward until the nearest set of holes in the housing line
up with the slot in the end plug to permit installing the end plug lock.
The end plug lock should snap securely in place. If it has been distorted, bend the ends of it away from the circular
section. This will permit the lock to fit tightly.
4. If the valve is to be installed when it is not possible to operate the engine for hydraulic power, such as described in the
proceeding paragraph, then the following procedure will apply to make the end plug adjustment:
Assemble the valve on the steering arm ball stud and assemble the ball socket end plug as described in the first
paragraph of the installation instructions.
Move the valve so the valve piston and ball socket travel inward. Hold the valve against the stop and turn the housing
end plug inward until there is 1/8 of an inch (.125) gap between it and the ball socket end plug. Insert a gage (.125
width) between the plugs through the inspection hole in the housing to check the measurement. Now remove the gage
and continue turning the end plug inward until the nearest set of holes in the housing line up with the slot in the end
plug to permit installing the end plug lock.
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