POWER STEERING SYSTEM
SECTION X
of holes in the housing line up with the riot in the and plug,
and install the cotter pin.
If the valve is to be lnstalled when it is not possible to
operate the engine for hydraulic power as descrlbed in the
proceeding paragraphs, use the following procedure to make
the end plug adjustment.
1. 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.
2. Move the valve so that 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 (.125) (3.175
mm) gap between it and the ball socket end plug. Insert a
gauge (.125) (3.175 mm) between the plugs through the
inspection hole in the housing to check the measurement.
Remove the gauge and continue turning the end plug in-
ward until the nearest set of holes in the housing lines up
with the slot in the end plug, and install the end cotter pin.
3. Always provide a dust shield to cover the ball socket
2. Attach the hydraulic lines to the valve ports. Lines must
opening. A lubrication fitting is provided for the valve ball
be attached to the same ports from which they were origi-
socket and stud.
nally removed.
3. When installing the valve housing end plug, particular
4. Before pIacing the vehicle into operation, recheck all
attention should be given to positioning it properly. The
line fittings on the valve, and hydraulic pump. Be sure the
plug provides a stop which limits the outward stroke of the
end plug is adjusted properly.
valve piston. There should be a 1/l6 inch (.062) (1.5875
POWER STEERING CYLINDER 14Z286)
mm) maximum gap between the end of the ball socket and
the force of the end plug when the valve piston is in a
DISASSEMBLY. To service the cylinder, Proceed as
contend (neutral) position (see Figure 10-15).
follows:
ADJUSTMENT. It is important that the end plug adjust-
1. Remove the steering cylinder from the carrier.
ment be made properly to assure that it provides for a stop
when the ball socket mows outward. This eliminates the
2. Remove the snap ring from the heed (see Figure 10-15).
possibility of placing tension on the valve piston when the
3. Push the head into the cylinder about 1/2 inch (12.7
valve is actuated during steering operation.
mm), or far enough to permit remove of the snap ring from
To obtain the proper end plug position, proceed as follows:
the body.
1. After the power steering system installation is complete,
4. Remove the head piston, and rod assembly as a unit by
fill the reservoir to the specified level with the type of fluid
pulling the rod outward. Remove the head from the rod.
recommended. Start the engine to allow the hydraulic fluid
5. Remove the rod seal and washer from the head by tak-
to circulate through the system. Have the front axle jacked
ing out the retaining ring.
up so that the wheels are deer. Turn the wheels to full right
and full left a few times to allow the steering cylinders and
REPAIR AND INSPECTION. When the cylinder is disas-
lines to fill. Check the fluid level in the reservoir and re-
sembled, inspect and repair as follows:
plenish if necessary.
1. Examine the piston and piston rings for damage, replace
2. Increase the engine speed to about 750 or 800 rpm.
these parts if they are worn or badly scored.
Hydraulic system pressure will center the valve piston in the
neutral position.
2. If the piston is removed from the rod, replace the cop-
per washer.
3. Turn the housing end plug inward until there is a 1/16
inch (1.587 mm) gap between the two end plugs. This
3. Inspect the inner wall of the cylinder body for scoring.
dimension can be measured by inserting a feeler gauge shim
Light scratches on the well can be removed by buffing with
(.062 width) (1.574 mm) between the plug, through the
crocus cloth.
inspection hole in the valve housing. Remove the gauge and
4. Examine the O-ring seaI for cuts and abrasions on the
continue turning the end plug inward until the nearest set.
10-17
