Chevrolet 10 Series 1967, Service Manual

Page: 139 / 605

FRONT SUSPENSION 3-11
4. If ball joint inspection shows no defect, assemble
upper stud to steering knuckle and torque 70 lb. ft.
on CP10 models, 120 lb. ft. on C20-30 models.
Lower
Lower ball joints are a loose fit when not connected to
the steering knuckle. Wear may be checked without dis­
assembling the ball stud, as follows:
1. Support weight of control arms at wheel hub and
drum.
2. Measure distance between tip of ball stud and tip of
grease fitting below ball joint (fig.
2 0
).
3. Move support to control arm to allow wheel hub and
drum to hang free. Measure distance as in Step 2.
If the difference in measurements exceeds .094"
(3/32") for all models, ball joint is worn and should
be replaced.
Lower Control Arm Assembly
Removal
1. Raise vehicle and remove spring as outlined under
Spring-Removal.
2. Disconnect control arm from crossmember by re­
moving four nuts securing cross-shaft.
Repairs
Bushings
1. Remove grease fittings from bushing outer ends and
unscrew bushings from control arm and shaft
(fig.
2 1
).
2. Slide new seal on each end of shaft and insert shaft
into control arm.
3. Start new bushings on shaft and into control arm.
Adjust shaft until it is centered in control arm, then
turn bushings in and torque to specifications. Figure
22 shows correct final positioning of shaft. Check
shaft for free rotation and install grease fittings.
B all Joint
1. Using heavy wall steel tubing or pipe, make re­
m over/installer tools to the dimensions shown in
Figure 23.
Fig .
22 -
Positioning Lower Control Arm Shaft
2. Place control arm over remover support and, with
appropriate remover, press out ball joint (fig. 24).
3. Invert arm and place on installer support at ball
joint area.
4. P ress new ball joint assembly into arm. If press
ram diameter is large enough to cover OD of ball
joint assembly, press joint into arm with ram in di­
rect contact. If ram is sm aller, use metal tube or
block (fig. 25). Make sure ball joint assembly is
fully seated and square with arm.
Installation
1. Place control arm assembly into position in both tub
type brackets located on the crossmember. A spe-
17
2
"
,1
INSTALLER SUPPORT CP 10, C20-30
h-------27/. " -
REMOVER C20-30
IT
l %"
, 1
I-1 Vi"-J
REMOVER SUPPORT CP10, C20-30
I-----
2 V *"
-----H
REMOVER CP10
REMOVER—INSTALLER TOOLS
F ig . 21 - Removing Control Arm Bushing F ig . 23 - Ball Jo in t Tools
CHEVROLET TRUCK SERVICE M ANUAL