Kingpins and Bearings
Inspect each kingpin closely for dents, signs of
cracking, distortion or any other damage.
Replace the kingpins found in defective
condi.
tion.
Check the oil seal for wear or damage. If
defec-
tive, replace with new one.
Fig. 17-1-31
Check the kingpin bearings for damage. If
anything is found wrong, replace the bearing
with new one.
Fig. 17-1-32
Steering Knuckle Oil Seal
The oil seal used at the spherical sliding joint
between the knuckle and the inner case accom-
plishes the additional purposes of keeping out
road dust and of acting as the damper for the
steering handwheel.
As the wear of this seal
advances, its damping effect decreases and thus
make the front wheel develop a tendency to
“shimmy”
not only that road dust begins to
creep into the sliding clearance to promote the
wear of the spherical sliding surfaces.
17-11
Fig. 17-1-33