Chevrolet 1977 light duty truck Service Manual page 279

LOWER
CONTROL
ARMS
CAUTION: See C A U T IO N on page I o f this
section regarding the fasteners referred to in
the m aintenance and adjustm ent procedures
below.
W HEEL BEARING S-CH EC K A D JU S T M E N T
CAUTION: Tapered roller bearings are used on
a ll series vehicles a nd they have a slightly loose
fe e l when properly adjusted. A design fea tu re o f
front wheel taper roller bearings is that they
m ust N E V E R be pre-loaded. D am age can
result by the steady thrust on roller ends which
comes from preloading.
1. Raise vehicle and support at front lower control
arm.
Fig. 3C-2--Front Suspension
MAINTENANCE AND ADJUSTMENTS
G-30-Typical
2. Spin wheel to check for
roughness.
3. If bearings are noisy, tight, or excessively loose,
they should be cleaned, inspected and relubricated prior
to adjustment. If it is necessary to inspect bearings, see
"W heel Hubs, Bearings"
Replacement."
NOTE: To check for tight or loose bearings, grip
the tire at the top and bottom and move the wheel
assembly in and out on the spindle. Measure
movement o f h ub assembly. If m ovem ent is less
than .001" or greater than .005", adjust bearings
per adjustment procedure.
SHOCK
ABSORBER
unusual noise or
under "C o m p on en t Parts