Chevrolet 30 Series 1967 Service Manual page 132

FRONT SUSPENSION 3-4
rubber insulated steel bushing through which the spring
is bolted to the spring front hanger.
shackle mounted through rubber bushings to the spring
rear hanger.
The K series "Four-Wheel Drive" vehicles incorporate
a driving front axle, tapered leaf springs, and direct-
WHEEL BEARINGS—ADJUST
10 Series and Chevy Van
1. Jack up front end of vehicle 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.
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 adjust­
ment provides for
clearance.
4. Spin hub to make sure it turns freely.
pin by spreading the end and bending it around spin­
dle. Install dust cap, and wheel and tire assembly.
Lower vehicle.
20-30 Series, I Beam 40-60 Series
(Except SE531, T50 and T60)
1. Follow Step 1 as outlined for 10 Series.
2. Tighten adjusting nut to 40 lb. ft. while rotating wheel
in both directions.
3. Back off nut 1/3 turn and install new cotter pin. If
spindle hole does not line up, tighten nut until align­
ment is obtained. This adjustment should result in
bearing end play of .
0 0 1
4. Spin hub to make sure it turns freely.
pin by spreading the end and bending it around spin­
dle. Install dust cap and wheel and tire assembly.
Lower vehicle.
I Beam—P20-30 Series
1. Follow Step 1 as outlined for 10 Series.
2. Tighten adjusting nut to 33 lb. ft. while rotating wheel
in both directions.
3. a. If at this point a slot in nut lines up with either of
two holes in spindle (fig. 5), back off nut 1/6 turn
until the next slot lines up with the next hole and
insert cotter pin (fig. 5).
b. If at this point there is no alignment between slots
in nut and spindle holes (fig. 5), back off until slot
lines up with the nearest hole in the spindle and
insert new cotter pin.
F ig . 5 - Wheel Bearing Adjustment - P20-30
The rear eye is
MAINTENANCE AND ADJUSTMENTS
.000" to .007" bearing end
Lock cotter
" to . ".
0 1 0
Lock cotter
acting hydraulic shock absorbers.
Service operation may be found at the back of this sec­
tion. Front axle differential will be found in Section 3
Truck Overhaul. The adapter and transfer case are cov­
ered in Section 7 Truck Overhaul.
NOTE:
At all times nut should be backed off
no more than turn.
1 / 6
4. Install wheel and tire assembly and dust cap. Lower
vehicle.
I Beam—Series (S59, T50 and T60)
1. Follow Step 1 as outlined for 10 Series.
2. Tighten adjusting nut to 60 lb. ft. while rotating hub
in both directions.
3. Back off nut 1/3 turn and install new cotter pin. If
spindle hole does not line up, tighten nut until align­
ment is obtained. This adjustment should result in
bearing end play of .
0 0 1
4. Spin drum to make sure it rolls freely.
pin by spreading the end and bending it around spin­
dle. Install hub plate or cap, wheel and tire assem­
bly, and lower vehicle.
Steering Stop Screw—Adjust
(I Beam Only)
Steering stop screws should be periodically checked and
adjusted to stop against the pads forged into the axle.
Proper adjustment will prevent excessive shock loads on
steering gear and also prevent steering worm shaft and
nut from bottoming on housing end cover.
front wheel on an alignment machine and adjust stop
screw s, as shown in Figure
All except Chevy Van
and P30 - 38-1/2° ± 1/2° both sides
P30 - 37° ± 1/2° left turn
- 32-1/2° ± 1/2° right turn
Chevy Van - 35-1/2° ± 1/2° both sides
If after adjustment tires have less than 5/8" clearance
from any chassis obstruction, turn stop screws to obtain
this clearance.
Front End Alignment
Correct alignment of the front suspension must be
maintained to insure efficient steering and satisfactory
tire life. Check alignment at regular intervals and par­
ticularly after front suspension has been subjected to
extremely heavy service or severe impact loads.
Before checking and adjusting alignment, such compo­
nents as wheel bearings, spring height, tie rods, steering
gear, kingpin bushings, shock absorbers and tire inflation
should be inspected and corrected where necessary.
Caster and Camber—Figure 7
Positive caster is the amount in degrees of the back­
ward tilt of the kingpin. Positive camber is the amount
in degrees that the front wheels are tilted outward at the
" to . ".
0 1 0
Lock cotter
Place each
to the following dimensions:
6
CHEVROLET TRUCK SERVICE MANUAL