Front Suspension - Chevrolet 10 1971 Series Chassis Service Manual

Two W heel D r i v e .......................................................................................3-1
G e ne ra l D e s c r ip t io n ......................................................................... ....3-1
M ain te nance and A d j u s t m e n t ...........................................................3-1
W heel B e a r i n g s ................................................. ...............................3-1
F ro n t End A lig n m e n t ........................................... ............................3-2
C om ponent P a r t R e p la c e m e n t.............................................. .............3-3
W heel Hub and B e a r i n g ..................................... ............................ 3-3
Shock A b s o r b e r s ........................................... ................................. ....3-4
S ta b iliz e r B a r ........................................... .................................... ....3-4
C o il S p r i n g ..........................................................................................3-4
L o w e r C o n tro l A r m .................................................... ...................... 3-5
B a ll J o in t I n s p e c t io n ................................................................... ....3-6
B a ll Jo in t R e p la c e m e n t .......................................................... ....3-6
Chevrolet 10-30 series truck use an independent wheel
front suspension incorporating a coil spring.
This suspension system consists of upper and lower
control arms pivoting on steel threaded bushings on upper
and lower control arm shafts which are attached to the
crossmember. The control arms are attached to the
steering knuckle through ball joints. The coil spring is
WHEEL BEARINGS— ADJUST
10 Series
1. Raise vehicle on hoist and remove wheel and tire
assembly. Remove dust cap from end of hub and
withdraw spindle cotter pin.
2. Tighten adjusting nut to 15 lb. ft. while rotating hub
in both directions.
This adjusting nut to spindle fastener is
NOTE:
an important attaching part in that it could affect
the performance of vital components and sys­
tems, and/or could result in major repair ex­
pense. It must be replaced with one of the same
part number or with an equivalent part if replace­
ment becomes necessary. Do not use a replace­
ment part of lesser quality or substitute design.
Torque values must be used as specified during
SECTION 3

FRONT SUSPENSION

CONTENTS OF THIS SECTION
F ro n t Suspension - 2 W heel D r i v e ................................................. 3-1
F ro n t Suspension - 4 W heel D r i v e ................................................. 3-11
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GENERAL DESCRIPTION
M AINTENANCE A N D ADJUSTMENTS
INDEX
B u sh in g R e p la c e m e n t ................................................. .............. 3-8
U pper C o ntro l A r m ....................................................... ..................3-8
B a ll J o in t R e p la c e m e n t .......................................................... 3-9
B ushing R e p la c e m e n t ............................................................. 3-9
Steering K n u c k le ............................................................................ 3-9
C ro s s m e m b e r U n i t ...................................................................... 3-10
F o ur W heel D r i v e .................................................................................. 3-11
G eneral D e s c r ip t io n ......................................................................... 3-11
M aintenance and A d j u s t m e n t ....................................................... 3-11
C om ponent R e p la c e m e n t ................................................................ 3-12
F ro n t A x le .........................................................................................3-15
Special Tools - 2 W heel D r i v e .................................................... 3-18
Special T ools - 4 W heel D r i v e .................................................... 3-19
located between the lower control arm and a formed seat
in the suspension crossmember (fig. 1).
Double acting shock absorbers are attached to the lower
control arm and to the frame at the upper end. Front
wheel bearings are the tapered roller type mounted within
the hub and brake disc assembly.
reassembly to assure proper retention of this
part.
3. Back off nut one flat (1/6 turn) and insert new cotter
pin. If nut and spindle hole do not line up, back off
slightly (1/6 turn) to align cotter pin. This adjustment
provides for .001" to .008" bearing end clearance.
4. Spin hub to make sure it turns freely. Lock cotter
pin by spreading the end and bending it inboard to
avoid possibility of damaging the static collector in
the dust cap. Install dust cap, and wheel and tire
assembly.
5. Lower vehicle to floor.
20-30 Series
1. Follow Step 1 as outlined for 10 Series.
2. Tighten adjusting nut to 40 lb. ft. while rotating wheel
in both directions.
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10-30 CHEVROLET TRUCK SERVICE MANUAL
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