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Section 124—-Assembly
15
RETAINERS
STEERING SHAFT
BALLS
RETAINERS
BALL NUT
RM-665
RM-666
Fig. 5—Removing or Installing
Fig. 6—Filling Ball
Ball Retainer
Return Guide
remain in the groove between the two circuits, or at the ends, these
balls cannot circulate and will cause ultimate failure of the steering
gear.
It may be necessary to rotate the steering tube shaft alternately
in both directions while, at the same time, holding the balls in place.
This will make it possible to completely fill the ball circuit.
Lay one-half of the retainer on the bench, and fill it with 10 balls
for the circuit being filled. Position the other half of the retainer
over
the balls, plug the ends with heavy grease,
and insert the
retainers into the retainer holes in the nut (fig. 6).
The second ball circuit is filled in the same manner,
Install the retainer clamp and three screws.
b. Installing and Adjusting Steering Tube Shaft and Sectors.
Position a roller bearing in the bearing race in the housing on the
upper bearing race of the shaft (fig. 2).
Place shims on the housing to an approximate thickness of 0.050
inch. Hold the steering tube shaft and ball nut assembly in place in
the housing, with the rack teeth toward
the sectors and the ball
nut in the approximate center of the worm. Install the steering tube.
Do not tighten the bolts so tight that damage to the bearings will
result, especially when an insufficient thickness of shims have been
used. Install the steering wheel and measure the force required to
rotate it. This should be from
1 to 1!4 pounds on a spring scale
(fig. 7). Add or remove shims as required until the correct force is
obtained. Be sure that the pulling force of the scale is at right angles
to a steering wheel spoke when taking measurements.
3730-473
§ 124. b.
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