Chevrolet 10 series 1973, Overhaul Manual

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9 -1 8 STEERING
Fig. 43--Removing Stub Shaft Assem bly
then carefully pull the spool from the valve body,
while rotating the valve (fig. 44). If the spool valve
becomes cocked, carefully realign the spool valve,
then remove.
4. Remove the dampener "O" ring from the spool
valve and discard.
5. If the teflon oil rings are to be replaced, cut the 3
teflon oil rings and "O" rings from the valve body
and discard.
Cleaning and Inspection
1. Wash all parts in clean solvent and blow out all oil
holes with compressed air.
2. If the drive pin in the stub shaft or valve body is
cracked, excessively worn or broken, replace the
complete valve and shaft assembly.
3. If there is evidence of leakage between the torsion
bar and the stub shaft, or scores, nicks, or burrs on
the ground surface of the stub shaft that cannot be
cleaned up with crocus cloth, the entire valve and
shaft assembly must be replaced.
4. Check the outside diameter of the spool valve and
the inside diameter of the valve body for nicks,
burrs, or bad wear spots. If the irregularities cannot
be cleaned up by the use of crocus cloth, the
complete valve and shaft assembly will have to be
replaced.
5. If the small notch in the skirt of the valve body is
excessively worn, the complete valve and shaft
assembly will have to be replaced.
6. Lubricate the spool valve with Power Steering Fluid
and check the fit of the spool valve in the valve
body (with the spool valve dampener "O" ring
removed). If the valve does not rotate freely without
binding, the complete valve and shaft assembly will
have to be replaced.
Assembly (Fig. 45)
1. If valve body "O" rings and teflon rings were
removed, install new "O" rings in the oil ring
grooves and lubricate with Power Steering Fluid.
2. Lubricate the 3 new teflon oil rings with Power
Steering Fluid and install in grooves over "O"
rings.
NOTE: The teflon rings may appear to be
distorted, but the heat of the oil during
operation of the gear will straighten them
out.
3. Lubricate the spool valve dampener "O" ring with
Power Steering Fluid and install over the spool
valve.
4. Lubricate the spool valve and valve body with
Power Steering Fluid and slide the spool valve into
the valve body. Rotate the spool valve while
pushing it into the valve body. Push the spool valve
on through the valve body until the shaft pin hole
is visible from the opposite end (spool valve flush
with shaft cap end of valve body).
5. Lubricate the shaft assembly with Power Steering
Fluid and carefully install it into the spool valve
until the shaft pin can be placed into the hole in the
spool valve.
6. Align the notch in the shaft cap with the pin in the
valve body and press the spool valve and shaft
assembly into the valve body (fig. 46).
CAUTION: Make sure that the shaft cap notch
is mated with the valve body pin before
installing valve body into the gear assembly.
7. Lubricate a new "O" ring with Power Steering
Fluid and install it in the shaft cap end of the valve
body assembly.
Fig. 4 4 -Removing Spool Valve
CHEVROLET OVERHAUL MANUAL