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Location-Front Ride Height Adjustment
check wheel stud nuts at 500 miles and every
wheel removal thereafter. Nuts should be tight-
ened to 250 foot-pounds torque in sequence
shown.
CAUTION
If, cmy
wheel experiences a single
stud
failure caused by a loose-running wheel,
all wheel studs.shoukl-be replaced .
A loose-running wheel :may cause
one studto
break, but
several more
fivtff may- became
fatigued
to the paint
of
failure, but
not-actually breaking .
Replaclnig only the broken stud and re-
mounting
wheel will then
set the stage
for -a second'arid
possibly more serious
failure .--If hales _-m
the wheel have be-
-Come
elongated -or enlarges replace
Tighten wheel stud nuts as follows :
1 . Install all nuts loosely, then finger-tighten
only the nuts marked by arrows .
2 . Tighten all nuts to specified torque in se-
quence illustrated. Never use oil or grease on
studs or nuts.
See IN CASE OF EMERGENCY section for
procedure used to change tire .
REAR WHEEL BEARING ADJUSTMENT
A periodic rear wheel bearing repack is re-
quired as indicated in Maintenance Schedule
folder . These bearings should be cleaned and
repacked with Lithium Soap Multi-Purpose
9 2
Grease meeting GM Specification 6031-M or
equivalent .
The adjustment of the bearing must be done
with the wheel off the floor, and rotating the
wheel while tightening nut . At this time make
the torque readings as follows :
1 . Tighten adjusting nut with a torque wrench
to 25-30 foot-pounds with wheel rotating to en-
sure that all parts are properly seated and
threads are free .
2 . Back off nut one-half turn. Re-tighten nut
finger-tight .
3 . If unable to install cotter pin at finger-
tight position, back off one slot, then secure with
cotter pin .
4. End play should be .001" to .005". Also
at this interval the rear suspension control arms
should be lubricated . This is accomplished at
the fittings between the rear wheels .
FRONT SUSPENSION
The front suspension consists of control arms,
stabilizer bar, shock absorbers and a right and
left torsion bar . The front suspension compo-
nents are designed to provide satisfactory serv-
ice, ride, and handling if not overloaded and ad-
justed to specified vehicle front end ride height .
No maintenance other than lubrication is
normally required . Refer to lubrication infor-
mation given earlier in this section for intervals
and lubrication points .
The front of the torsion bar is attached to the
lower control arm. The rear of the torsion bar
is mounted into an adjustable arm . The front
ride height is controlled by this adjustment .
The simplest way to adjust is to move arm
slightly to achieve ride height and drive unit a
few blocks so as to overcome delaying action .
NOTE : Ride height is measured from top of
elongated slot in frame rail to ground level . Tire
inflation should be checked prior to making any
ride height adjustment.
Ride height should be adjusted by raising
vehicle to relieve strain on adjusting bolt. Lubri-
cate adjusting bolt with chassis grease . Adjust-
ment is made by repositioning adjusting bolt
to wind-up and unwind torsion bar. Whenever
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