Chevrolet 30 Series 1967 Service Manual page 147

Fig . 43 - Front Spring Rear Hanger Floating Cam -
4-5000^ A x le Shown
2. Install front pivot pin and nut. Tighten nut 370 lb. ft.
Heavy duty spring bushings are steel-backed bronze
and must be lubricated prior to installation of pivot
pin.
3. Raise I-beam with caster shims in position, index
spring center bolt into I-beam spring seat and install
"U" bolts, spacers and nuts. Torque "U" bolt nuts
120 lb. ft. Connect shock absorber.
Steering Knuckle—Figure 44
Steering knuckle and kingpin may be removed and
serviced without removing the axle assembly from the
vehicle.
Removal
1. Raise front of vehicle and remove wheel and tire and
front hub and bearing assembly as outlined under
"Front Hubs and Drums-Removal."
2. Remove bolts retaining brake backing plate to steer­
ing knuckle and withdraw plate. Attach backing plate
to frame or body to prevent damage to brake hoses.
3. Swing steering and tie rod arm out of work area.
P 20-30 and 40-60 Series
(Except Heavy Duty 9 0 0 0 # —1 1,00 0# )
4. a. Remove upper and lower dust caps.
b. Remove kingpin lockpin nut and pull out lockpin.
c. Tap kingpin out from bottom and withdraw steer­
ing knuckle, shim, and thrust bearing pack.
9 0 0 0 # -1 1 ,0 0 0 #
a. Remove upper dust cap and lower expansion plug
lock ring.
b. Remove kingpin upper cotter pin and nut. On
lb. axle remove metal spacer under king­
1 1 , 0 0 0
pin nut.
c. Drive kingpin downward out of axle and knuckle.
Withdraw steering knuckle, thrust bearing and
spacer washers.
d. Remove upper kingpin bushing. This bushing is a
.001"-<,003M fit and may be pushed out by hand.
Inspection
1. Wash all parts in solvent and air dry.
2. Inspect steering knuckle for distortion, cracks or
breaks. If equipment is available, us
penetrant method to check for minute fractuiv,-.
3. Examine thrust bearings or washers for excessive
wear or scoring.
4. Examine steering knuckle bushings and kingpin for
excessive wear or scoring.
Repairs
Kingpin
If kingpin is damaged, it must be replaced during reas­
sembly of steering knuckle.
Bushings
Steering knuckle bushings are split type floating Delrin
bushings and can be removed by sliding them out of
knuckle bores without the use of special tools. After re­
moval, clean up bushing bores using medium grit abra­
sive cloth. Wipe bores clean, lubricate bushing OD and
install into knuckle.
Also, lubricate and place "O"
knuckle bore under the upper bushing (fig. 44).
Installation
1. a. On 2 200#-4000# Models
Position steering knuckle on axle end and slide
thrust washer assembly, consisting of one center
steel washer and two bi-m etallic upper and lower
washers encased in dust shields, between lower
face of axle end and steering knuckle lower yoke.
Grooved cooper side of upper and lower thrust
washers must be assembled toward center steel
washer (fig. 45).
temporarily to
alignment.
b. Chevy Van
Position steering knuckle on axle end and slide
thrust washer assembly, consisting of a bronze
washer between two steel washers and encased in
dust shields, between lower face of axle end and
steering knuckle lower yoke.
marked must face upward (fig. 45).
kingpin and install
knuckle-to- -beam alignment.
1
c. On 5000#-7000#-9000#-11,000# and P20-30
Position and align steering knuckle on axle cen­
ter slide thrust bearing assembly between lower
face of axle end and knuckle lower yoke. Make
certain retainer is on top of bearing with lip of
retainer down. Lubricate kingpin and install
temporarily to
alignment.
NOTE: P ress kingpin upper sleeve over king­
pin before installing. Install kingpin from bot­
tom of steering knuckle (9000#-11,000# only).
2. Place a jack under steering knuckle and raise
knuckle enough to take up clearance between knuckle
yoke, axle end and thrust bearing or washers. Check
clearance between upper face of axle end and knuckle
upper yoke. On 2200-4000-5000-7000# models, if
this clearance exceeds .005", add shims as neces­
sary to bring clearance below this dimension. On
9000#-11,000# models, if this clearance exceeds
.015", add shims as required to obtain a clearance
of .003" to .008" (fig. 46).
FRONT SUSPEf < .
O
ring seal in upper
Lubricate kingpin and install
maintain knuckle-to- -beam
1
Dust shield is
Lubricate
temporarily to maintain
maintain knuckle-to-I-beam
CHEVROLET TRUCK SERVICE MANUAL