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432—STEERING
CHRYSLER SERVICE MANUAL
same manner except at a higher rate of r.p.m.
Do not exceed approximately 60 steering wheel
r.p.m. when making this check. If the turning
force did increase considerably while turning
the wheel at high rate of speed, then the condi-
tion is "Lack of Assist in One Direction." If the
amount of turning force did not increase, then
it is "Unequal Steering Effort." Proceed as fol-
lows to determine cause:
e. Control Valve Adjustment
Disconnect linkage and center control valve
so that an equal amount of torque is required
to turn the gear shaft from one extreme to the
other. (If proper adjustment cannot be main-
tained, refer to "Inability to Maintain Control
Valve Adjustment.")
f. Upper Piston Rod Movement in Piston
Check fit of snap ring which retains upper pis-
ton rod in the piston by attempting to rotate
the snap ring. If the snap ring can be rotated,
it will allow the upper piston rod to move axi-
ally with respect to the piston and displace the
control valve relationship to the valve body.
This can cause self steering in either direction,
however, it is usually noted to be to the left.
Replace piston, making sure the snap ring seats
tightly.
g. Connector Nut
Any condition which will cause the valve rod
adjusting disc to become loose in the connector
will result in self steering. Check for connector
nut not tightening sufficiently to lock the valve
rod adjusting disc and reaction assembly in the
connector. Remove the worm connector and
reaction assemblies from the upper piston rod.
Reassemble by placing the adjusting disc,
adjusting disc retainer and valve control spacer
in their respective positions in the worm con-
nector. Install worm connector nut and tighten
securely. Insert a small punch or screwdriver
through the bottom of the connector and attempt
to rotate the adjusting disc. If it cannot be
rotated, it is properly locked. If it can be rotated,
check threads on connector nut, connector, etc.,
and replace parts as necessary.
h. Control Valve Loose on Rod
The control valve rod is connected to the con-
trol valve by peening. Check for any movement
between the two. If movement does exist, replace
the control valve and rod assembly. Do not
attempt to tighten.
i. Upper Piston Rod Nut Loose
Tighten securely.
j. Upper Piston Rod
Inspect rod for being scored at reaction seal
retainer bearing surfaces and replace if neces-
sary.
k. Reaction Assembly
If the above items have failed to correct unequal
steering effort, replace all reaction parts. Make
sure the valve control spacer is matched to the
upper piston rod. The length of the valve control
spacer must be identical to the distance between
the seat of the lower valve control spacer retain-
er and the upper piston rod nut.
30. INABILITY TO MAINTAIN CONTROL
VALVE ADIUSTMENT
This condition may be caused by the following
conditions:
Valve control rod loose in disc. The locking
effort of the adjusting disc can be increased by
slightly compressing the locking portion in a
vise. Turning effort of rod in disc should be 10
to 20 inch-pounds. Do not exceed 20 inch-pounds
or the valve rod and (or) adjusting tool may be
damaged.
Upper piston rod nut loose. Tighten securely.
Control valve loose on rod. Replace assembly
if any looseness is found.
Reaction spacer too long or too short, or
burrs or out-of-squareness of any of the reac-
tion area parts which are held inside the con-
nector by the connector nut (including the nut
not being tightened) can cause this condition.
31. LACK OF ASSISTANCE
a. One Direction
Lack of assistance in one direction is usually
found to be caused by one of the following con-
ditions :
Damaged neoprene piston ring.
Housing head oil seal (upper piston rod).
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