brake CHEVROLET CAMARO 1967 1.G Chassis User Guide
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Page 165 of 659
SECTION
3
FRONT SUSPENSION
INDEX
Page
General Description
. . . . 3-1
Maintenance and Adjustments
3-3
Front Wheel Bearing Adjustment
3-3
Front End Alignment
3-5 .
Alignment Preliminary Steps ............
3-5
Caster
and
Camber Adjustments
. . 3-5
Chevelle, Caxnaro
and
Corvette
3-5
Chevrolet and Chevy
II 3-6
Steering Axis Inclination
3-6
Toe-in Adjustment
3-6
Cornering Wheel Relationship
3-6
Riding Heigit
and
Coil Spring Sag
3-7
Repair Procedures
3-8
Front Brake Drum (Chevrolet, Camaro, Chevelle,
Chevy E)
. . 3-8
Removal
3-8
Installation
3-8
Front Wheel Hub
3-8
Replacement
. . . . . 3-8
Replacement
of
Hub Wheel Bolts
3-8
Front Wheel Bearings
. . 3-8
Removal
3-8
Inspection
3-9
Repairs
. . 3-9
Replacement
of
Bearing Cups
3-9
Installation
3-9
Steering Knuckle
. . . 3-9
Removal
3-9
Installation
3-9
Shock Absorber
3-10
Chevrolet, Chevelle, Camaro
and
Corvette
3-10
Removal
, . 3-10
Installation
3-10
Chevy
It 3-11
Removal
3-11
Installation
3-11
Stabilizer
Bar 3-11
Removal
3-11
Installation
3-11
Strut Rod
3-11
Chevrolet and Chevy
II 3-11
Removal
3-11
Installation
3-12
Front Coil Springs
3-12
Chevrolet
3-12
Removal
3-12
Installation
3-13
Chevelle
and
Camaro
3-13
Removal
3-13
Installation
3-14
Chevy H
3-14
Removal
3-14
Spring Seat Disassembly and Assembly
3-15
Installation
3-15
Corvette
3-15
Lower Control Arm Spherical Joint
.' 3-16
Chevrolet, Chevelle, Camaro and
Corvette
3-16
Inspection
. 3-16
Chevrolet and Corvette
3-16
Removal
3-16
Installation
3-16
Page
Chevelle
and
Camaro
3-17
Removal
3-17
Installation
. . . . 3-17
Chevy
II 3-17
Inspection
. 3-17
Removal
3-17
Installation
3-17
Lube Fittings
3-18
Lower Control Arm
. . . . 3-18
Chevrolet
. 3-18
Removal
3-18
Installation
3-18
Chevelle and Camaro
3-18
Removal
3-18
Installation
3-18
Chevy H
3-18
Removal
3-18
Installation
3-19
Corvette
3-19
Removal
3-19
mstallation
3-19
Lower Control Arm Bushings
3-20
Chevrolet
3-20
Removal
3-20
Installation
3-20
Chevelle and Camaro
. 3-20
Removal
3-20
Installation
3-20
Chevy H
3-21
Removal
* 3-21
InstaEation
3-21
Cross Shaft and/or Bushings
. 3-21
Corvette
3-21
Removal
3-21
Installation
3-21
Upper Control Arm Spherical Joint
3-21
Chevrolet, Chevelle, Camaro and Corvette
..... 3-21
Inspection.
3-21
Replacement
3-21
Chevy
II 3-21
Inspection
3-21
Replacement
3-21
Lube Fittings
3-22
Upper Control Arm
3-22
Chevrolet, Chevelle, Camaro
and
Corvette
3-22
Removal
3-22
Installation
3-22
Chevy H
3-22
Removal
3-22
Installation
3-23
Upper Control Arm Cross Shaft
and/or Bushings
3-23
Chevrolet, Camaro and Chevelle
3-23
Removal
. 3-23
Installation
3-23
Chevy H
3-24
Removal
3-24
Installation
. . . 3-25
Corvette
3-25
Removal
3-25
Installation
3-25
Special Tools
3-26
Specifications
...'..'
At rear of Book
GENERAL DESCRIPTION
The 1967 Chevrolet, Chevelle, Camaro, Chevy n and
Corvette front suspension systems are basically similar,
being of the
S.L.A.
(short-long arm) type with independent
coil springs. In the Chevrolet, Chevelle, Camaro and
Corvette the springs ride on the lower control arms; in
the Chevy II the springs ride on the upper control arms.
Spherical joints connect the upper and lower arms to the
steering knuckle. Tapered roller wheel bearings are
used.
Camber angle is adjusted, on the Chevrolet and Chevy n
CHEVROLET CHASSIS SERVICE MANIM
Page 172 of 659
FRONT SUSPENSION 3-8
REPAIR PROCEDURES
Unless otherwise indicated all repair procedures will
apply to all five vehicles covered in this manual.
CAUTION: During any operations which in-
clude breaking the ball stud loose from the
knuckle boss extreme care must be used to as-
sure that the ball stud seal is not damaged or
cut. A recommended way to loosen the stud is to
place a flat bar stock against the knuckle boss
and strike the bar rather than the knuckle.
FRONT BRAKE DRUM-CHEVROLET, CAMARO,
CHEVELLE, CHEVY It
Removal
1.
Remove hub caps, partially loosen wheel nuts and
raise vehicle from floor. Remove wheel nuts and
wheel.
2.
Remove brake drum. In some cases it may be nec-
essary to back off brake adjustment because of
scored drum or unevenly worn brake linings.
3.
Check brake drum for concentricity, damaged pilot
diameter or scored braking surface. Lightly sand
braking surface and wipe clean.
Installation
1.
Install drum over hub bolts making sure alignment
dowel on drum web indexes with hole in wheel hub.
This will assure proper drum alignment with hub
bolts and hub pilot diameter.
2.
Install wheel and partially tighten wheel nuts.
3.
Re-adjust brake shoes to original setting. It may be
necessary to re-adjust brake shoes on both front
and/or rear wheels to assure balanced brake adjust-
ment. See Section 5 for brake adjustment procedure.
4.
Lower vehicle to floor, tighten hub wheel nuts and in-
stall hub cap.
FRONT WHEEL HUB
Replacement
1.
Remove hub caps, break loose the wheel stud nuts
VM" DIA. PIPE OR ARBOR
>l
INNER CUP
OUTER CUP
JL
RADIUS
e^
Fig.
10 - Pressing Front Hub Bolts (Typical)
Fig.
11 - Front Wheel Bearing Cop Removers
and raise vehicle. Remove wheel nuts, wheel and
tire and brake drum or (on Corvette) brake caliper
and brake disc.
NOTE:
On the Corvette, the hub and brake disc
are serviced as a complete assembly.
2.
Pry out hub grease cap, cotter pin, spindle nut and
washer,
and
remove hub. Do not drop wheel bearings.
3.
Reverse this procedure to install.
Replacement of Wheel Hub Bolts
It may be necessary to replace damaged wheel hub
bolts.
In this case, service the hub in the following
manner.
1.
Remove the hub bolts with a press or hammer.
These bolts are not peened into the hub. Do not
damage wheel mounting surface on hub flange.
2.
Install new serrated bolt into hole in
hub.
Tap lightly
with a hammer to start bolt serrations in hole, mak-
ing sure that bolt is square with hub flange.
3.
Press bolt into flange until head is fully seated
against hub flange (fig. 10).
FRONT WHEEL BEARINGS
Removal '
1.
Remove wheel hub as described above.
NOTE: Discard cotter pin. Install new cotter
pin when assembling.
2.
Remove outer roller bearing assembly from hub with
fingers. The inner bearing assembly will remain in
the hub and may be removed after prying out the
inner bearing lip seal assembly. Discard seal.
3.
Wash all parts thoroughly in cleaning solvent and
blow dry.
CHEVROLET CHASSIS SERVICE MANUAL
Page 173 of 659
FRONT SUSPENSION 3-9
Inspection
1.
Check bearings for cracked separators or worn or
pitted rollers and races.
2.
Check brake drum for
out-of-
round or scoring.
3.
Check fit of bearing outer cups in hub.
Repairs
Replacement of Bearing Cups
1.
Using steel bar stock, make press-out tools shown in
Figure 11.
2.
Insert removers through hub, indexing ends into slots
in hub shoulder behind bearing cup.
3.
Using a suitable extension pipe or rod, press bearing
cups from hub.
4.
Install new bearing cup in hub using Tool J-8849 on
the outer and Tool J-8850 on the inner cup (fig. 12).
Use Driver Handle J-8092 with the installers. Make
sure that the bearing cups are not cocked and are
fully seated against shoulder in hub.
Installation
1.
Pack both inner and. outer bearings using a high
melting point wheel bearing lubricant.
2.
Place inner bearing in hub, then install a new inner
bearing lip seal assembly. Seal flange should face
bearing cup.
3.
Carefully install wheel hub over steering spindle.
4.
Install outer bearing, pressing it firmly into the hub
by hand.
5.
Install spindle washer and adjusting nut. Draw up
tight and adjust wheel bearings as outlined under
"Front Wheel Bearing Adjustment".
STEERING KNUCKLE
Chevrolet, Chevelle, Camaro and Corvette—It is rec-
ommended that vehicle be raised and supported on a
twin-post hoist so that the front coil spring remains com-
pressed, yet the wheel and steering knuckle assembly re-
main accessible. If a frame hoist is used, support lower
control arm with an adjustable jackstand to safely retain
spring in its curb height position.
Chevy n— While vehicle weight is still on front wheels,
position support between upper control arm and frame
side rail (fig. 13), then raise vehicle and position adjust-
able jackstand under lower control arm.
Removal
1.
Raise vehicle and support lower control arm as noted
above.
2.
Remove hub cap, wheel hub dust cover, cotter pin,
adjusting nut and washer. Withdraw wheel and tire,
brake drum, (or, on Corvette--brake caliper and disc
and hub assembly, See Section 5) and wheel hub and
bearing assembly from steering knuckle spindle.
3.
Remove brake shoes from backing plate (except
Corvette, See Section 5) and clamp wheel cylinder.
CAUTION: Keep brake shoes clean and dry.
4.
Remove brake anchor pin and two bolts securing
brake backing plate and steering arm to steering
knuckle.
5.
Withdraw steering arm and brake backing plate from
steering knuckle. Wire backing plate to frame (fig.
13).
Do not disconnect brake line.
NOTE: Refer to Section 9 - Steering Linkage -
Tie Rod, for further steering arm service
operations.
6. Remove upper and lower ball stud cotter pins and re-
move ball stud nuts. Free steering knuckle from
ball studs by rapping steering knuckle bosses. With-
draw steering knuckle.
Installation
1.
Place steering knuckle in position and insert upper
and lower ball studs into knuckle bosses.
2.
Install ball stud nuts and tighten nut as shown in the
specifications at the end of this section.
Fig.
12 - Installing Front Hub Inner Bearing
Fig.
13 - Backing Plate Removed - Chevy II
CHEVROLET CHASSIS SERVICE MANUAL
Page 174 of 659
FRONT SUSPENSION 3-10
CHEVROLET, CHEVELLE, CAMARO AND CORVETTE (TYPICAL)
CHEVY H
Fig.
14- Shock Absorber
NOTE:
If necessary, tighten one more notch to
insert cotter pins.
3.
Place brake backing plate and wheel cylinder in posi*-
tion on steering knuckle and insert anchor pin.
4.
Place steering arm in position on back of steering
knuckle and insert two bolts through backing plate,
steering knuckle and steering arm. Install locknuts
and tighten. (See Specifications.)
5. Torque brake anchor pin (See Specifications).
6. Install brake shoes, except Corvette. (See Section 5.)
7. Install wheel hub, brake drum (or, on Corvette--
brake caliper and disc and hub assembly), wheel and
tire assembly over spindle.
8. Insert outer wheel bearing race and roller assembly,
washer and nut. Adjust front wheel bearing as shown
under Maintenance and Adjustments in this section.
Install new cotter pin, dust cap and hub cap.
9. Lower vehicle, recheck and readjust wheel alignment
where necessary.
SHOCK ABSORBER
Chevrolet, Chevelle, Comoro and Corvette (Fig. 14)
Removal
1.
With an open end wrench hold the shock absorber
upper stem from turning, and then remove the upper
stem retaining nut, retainer and rubber grommet.
2.
Remove the two bolts retaining the lower shock ab-
sorber pivot to the lower control arm and pull the
shock absorber assembly out from the bottom.
Installation
1.
With the retainer and rubber grommet in place over
the upper stem, install the shock abosrber (fully ex-
tended) up through the lower control arm and spring
so that the upper stem passes through the mounting
hole in the upper support arm.
2.
Install the rubber grommet, retainer' and attaching
nut over the shock absorber upper stem.
3.
With an open end wrench, hold the upper stem
from turning and tighten the retaining nut. (See
Specifications.)
4.
Install the two bolts attaching the shock abosrber
lower pivot to the lower control arm and tighten.
(See Specifications.)
Fig.
15 - Upper Control Arm Support Installed - Chevy II
CHEVROLET CHASSIS SERVICE MANUAL
Page 176 of 659
FRONT SUSPENSION 3-12
2.
Remove forward nut, retainer and rubber bushing
from front end of strut rod.
3.
Remove two nuts from strut rod to lower control arm
bolts and remove bolts and washers.
4.
Withdraw strut rod from bracket.
5. Remove remaining rubber bushing, retainer, sleeve
and nut from strut rod.
6. Inspect rubber bushings for aging and replace if
necessary. *•
Installation
1.
Screw rear nu$ on forward end of rod and position it
approximately 3/4" from end of threads. Install
rear retainer, sleeve and bushing on rod so raised
pilot diameter faces forward.
2.
Insert strut rod in bracket so pilot diameter on bush-
ing pilots in hole in bracket. Install forward bushing
on sleeve so raised pilot diameter faces rear to
enter hole in bracket, then install forward retainer
and nut on rod.
3.
Attach strut rod to top of lower control arm with two
bolts,
washers and nuts.
4.
Lower vehicle to floor, check caster and camber
angles and adjust where necessary. Torque nuts as
shown in Specifications.
FRONT SPRING
Chevrolet
Removal
1.
With an open end wrench hold the shock absorber
upper stem from turning, and then remove the upper
stem retaining nut, retainer and rubber grommet.
I IVi" rVi"i
\>. j ii
>
I
5'4
s
WOOD
BLOCK
USED
WITH
CHEVROLET
ONLY
Fig.
19
- Spring Removal Tools - Chevrolet, Chevelle and Comoro
2.
With the car supported by the frame so that the con-
trol arms hang free, remove the wheel and tire as-
sembly (replace one wheel nut to retain the brake
drum),
shock absorber, stabilizer bar to lower con-
trol arm link, strut rod to lower control arm attach-
ing, nuts, bolts and lock washers and tie rod end.
3.
Scribe the position of the inner pivot camber adjust-
ing cam bolt and then remove the nut, lock washer
and outer cam.
4.
Install a steel bar (fabricated as shown in Figure 19)
through the shock abosrber mounting hole in the
lower control arm so that the notch seats over the
bottom spring coil and the bar extends inboard and
under the inner bushing. Fit a 5" wood block (See
Figure 19) between the bar and the bushing as shown
in Figure 20.
5.
With suitable jack or hoist, lift up slightly on the end
of the bar to remove the tension from the inner pivot
cam bolt, which can then be removed.
Fig.
18-Strut Rod
Pig. 20 - Front Spring Removal - Chevrolet
CHEVROLET CHASSIS SERVICE MANUAL
Page 177 of 659
FRONT SUSPENSION ,3-13
6. Carefully lower the inner end of the control arm.
Tension on the spring will be removed before the
spring can be removed from the vehicle.
7.
Remove the spring.
Installation
1.
With the suspension set up as in Step 2 of the disas-
sembly procedure, insert a block of wood between the
upper control arm and the spring tower to keep the
arm up out of the way.
2.
Set the spring in place on the crossmember after
checking on proper positioning necessary.
3.
Install the steel bar and wood block as shown in Fig-
ure 20 and lift the control arm up until the inner
pivot cam bolt can be installed. ,
4.
Install the outer cam and loosely install the lock
washer and nut
5.
Set the cam bolt on the mark scribed during the re-
moval procedure and hold in this position while tight-
ening the nut (See specifications at the end of this
book).
6. Replace the strut rod to lower control arm nuts,
bolts and lock washers, the stabilizer bar link, the
shock absorber, the tie rod end, and the wheel and
tire.
7.
Lower vehicle to floor and install the shock absorber
upper stem retaining nut retainer and grommet.
8. Check the camber adjustment.
Chevelle and Camaro
Removal
1.
With an open end wrench hold the shock absorber up-
per stem from turning, and then, remove the upper
stem retaining nut, retainer and rubber grommet.
2.
With the car supported by the frame so that the con-
trol arms hang free, remove the wheel and tire as-
sembly (replace one wheel nut to retain the brake
drum),
shock absorber, and stabilizer bar to lower
control arm link.
4.
5.
Fig.
21 - Front Spring Removal - Chevelle & Camaro
Place a steel bar (fabricated as shown in Figure 19)
through the shock absorber mounting hole in the
lower control arm so that the notch seats over the
bottom spring coil and the bar extends outboard be-
yond the end of the control arm and slightly toward
the front of the car.
With a suitable jack or hoist lift up slightly on the
end of the bar.
Remove the lower ball stud cotter pin and attaching
nut and remove the ball stud from the knuckle.
ALTERNATE METHOD
Fig.
22 - Removing or Installing Front Coil Spring - Corvette (Typical)
CHEVROLET CHASSIS SERVICE MANUAL
Page 180 of 659
FRONT SUSPENSION 3-16
available the following procedure may also be
used (fig. 22-Alternate Method).
1.
Support car on suitable hoist or jack (so control
arms may swing free) and remove the wheel and
tire assembly, shock absorber, and stabilizer link
at control arm.
2.
Place suitable jack stand under the lower control
arm cross shaft.
3.
Follow Steps 2-5 as outlined on previous page.
4.
Turn head of tool screw to partially compress
spring.
5. Remove the three control arm cross shaft attaching
bolts,
washers and nuts.
6. Carefully lower jack stand and if necessary increase
compression on spring and when coil spring is out of
its upper seat, relax tension on spring (fig. 22).
7. By using a pry bar to assist, if necessary, remove
the coil spring from the lower control arm.
8. Installation is the reverse of the above procedure.
Carefully follow instructions for installing spring
tool.
LOWER CONTROL ARM SPHERICAL JOINT
Chevrolet, Chevelle, Comoro and Corvette
Inspection
The lower control arm spherical joint should be re-
placed whenever wear is indicated in the upper joint
inspection.
NOTE: The lower control arm spherical joint
is a loose fit in the assembly when not connected
to the steering knuckle.
Only if inspection of each upper joint indicates them
both to be within limits, inspect each lower joint for ex-
cessive wear as follows:
1.
After reconnecting upper joints to steering knuckles,
support vehicle weight on wheels or wheel hubs.
2.
With outside micrometer or caliper, measure dis-
tance from top of lubrication fitting to bottom of ball
stud, and record the dimensions for each side.
3.
Then support vehicle weight at outer end of each
lower control arm, so that wheels or wheel hubs are
free,
then repeat Step 2.
4.
If the difference in dimensions on either side is
greater than 1/16" (.0625"), the joint is excessively
worn and both lower joints should be replaced.
If inspection of lower spherical joints does not indicate
excessive wear, inspect further as follows:
5.
On Chevrolet Only--Examine lubrication hole in each
joint assembly after cleaning out hole. Look for evi-
dence of the liner partially or fully blocking lubrica-
tion opening. Such evidence indicates that liner is
disintegrating and that both lower spherical joints
should be replaced.
Another indication of lower spherical joint excessive
wear is indicated when difficulty is experienced when
lubricating the joint. If the liner has worn to the point
where the lubrication grooves in the liner have worn
away, then abnormal pressure is required to force lubri-
cant through the joint. This is another reason to recom-
mend replacement of both lower joints.
If the above inspections do not indicate any reason for
spherical joint replacements, test the torque tightness of
Fig. 27 - Removing Lower Ball Joint - Chevelle
&
Camaro
the lower ball stud in the knuckle on each side as follows:
1.
Wire-brush off nut and cotter pin attaching spherical
joint ball stud to steering knuckle and examine for
evidence of looseness of stud in knuckle.
2.
If no evidence of looseness, remove cotter pin and
with prick punch or equivalent, mark nut stud and
knuckle to identify relative location.
3.
Tighten nut as installed and observe torque reading.
If less than 45 lbs. ft., stud may have been loose in
steering knuckle and replacement of both lower
spherical joints may be recommended.
4.
Check to see if torque of 60-94 lbs. ft. can be ob-
tained without bottoming stud or ball joint against
knuckle. If bottoming occurs, replace ball joint or
steering knuckle.
Chevrolet and Corvette
Removal
1.
Support lower control arm at outer end on floor jack,
with hoist or jack pad clear of lower ball stud nut.
2.
Remove upper and lower ball stud nuts, free ball
studs from steering knuckle and wire knuckle and
brake drum assembly up to fender skirt to preclude
interference while performing next step.
3.
Being careful not to enlarge the holes in control arm,
cut off rivets.
Installation
1.
Install new joint against underside of control arm and
CHEVROLET CHASSIS SERVICE MANUAL
Page 181 of 659
FRONT SUSPENSION 3-17
4.
Replace the wheel and tire.
5.
Lower the vehicle.
Chevy II
inspection
Fig.
28 - Installing Lower Ball Joint - Chevelle & Camaro
retain in place with special bolts and nuts supplied
with new joint.
CAUTION: Use only alloy bolts supplied for
this operation. The special thick headed bolt
must be installed in the forward side of the
control arm.
2.
Tighten bolts and nut on ball stud to Specification
shown at the end of this book.
3.
Lubricate the joint.
Chevelle and Camaro
Removal
1.
Support lower control arm at outer end of floor jack,
with hoist or jack pad clear of lower ball stud and
remove the wheel.
2.
Remove the upper and lower ball stud nuts, free the
ball studs from the steering knuckle and wire the
knuckle and brake drum assembly out of the way to
preclude interference while completing the lower ball
stud removal procedure.
3.
Use a screw driver to pry off the seal and retainer.
Install Tools J-9519-10, J-9519-17 and J-9519-7 as
shown in Figure 27 and turn down on the hex head
screw until the ball stud is pushed out.
Installation
1.
Start the replacement ball stud into the control arm
and install Tools J-9519-10, J^9519-16 and J-9519-17
as shown in Figure 28.
2.
Turn down on the hex head screw until the ball stud
is seated properly in the control arm.
3.
Install the stud into the steering knuckle, secure in
place with the attacking nut and install the cotter pin.
1.
With upper control arm support in position as in
Figure 15, disconnect the lower ball stud from steer-
ing knuckle.
2.
Assemble nut to lower ball stud and check rotating
torque with torque wrench. Specifications for new
joints are 9 lbs. ft. If torque readings are exces-
sively high or low, replace ball joint.
Removal
1.
While vehicle weight is still on front wheels, position
support between upper control arm and frame side
rail (fig. 15).
2.
Raise vehicle and remove cotter pin and nut from
lower ball joint stud (fig. 29).
3.
Disconnect stabilizer at upper link. Break loose the
lower ball stud. Drop lower control arm until lower
ball joint is easily accessible.
, 4. Using a large chisel, cut off the three ball joint re-
taining plate rivet heads. It may be necessary to
drill out rivet heads before chiseling.
NOTE: Additional support to lower control
arm will be necessary to perform this operation.
5.
Remove ball joint from arm and clean arm.
6. Inspect ball joint seat and rivet holes for evidence of
fatigue such as cracking or bending. If defects are
evident, replace lower control arm as outlined later
in this section.
Installation
1.
Install ball joint in arm using special bolts furnished
with replacement kit.
NOTE: Use only special hardened bolts fur-
nished with this replacement kit. Do not attempt
to use other non-hardened bolts and do not at-
tempt to rivet replacement ball joint to arm.
Fig.
29- Disassembling Lower Ball Stud - Chevy
CHEVROLET CHASSIS SERVICE MANUAL
Page 185 of 659
FRONT SUSPENSION 3-21
Chevy II
Removal
1.
Support control arm on Tool J-7 574-4 and insert
Spacer J-9514 (fig. 34).
2,
Press bushing out with Tool J-9226 and Handle
J-7079-2 (fig. 34).
Installation
With Spacer J-9514 still in control arm, invert control
arm and press in new bushing with Tool, J-7474-2 and
Handle J-7079-2 until bushing is fully seated.
CAUTION: It should be noted that control arm
bushing diameters are unequal and bushing must
be pressed into position through larger diameter
only.
CROSS SHAFT AND/ON BUSHINGS
Corvette
Removal
1.
Remove bolt, lock washer and collar from each end
of cross shaft.
2.
Thread a 7/16 x 20 capscrew (furnished with Tool
J-5888) to the bottom of the threads in one end of the
cross shaft.
3.
Support control arm in an arbor press on Tool
J-5888-3,
as shown in Figure 35.
NOTE:
Be certain bushing flange does not
contact support.
4.
Press on cap screw until bushing is free of control
arm. Discard bushing.
5. Remove cap screw from cross shaft. Insert it in
other end of shaft. Invert control arm on support.
Again be certain bushing flange does not contact
support.
6. Press on cap screw until bushing is free of control
arm. Discard bushing.
Installation
1.
With cross shaft in control arm and Tool J-7052-1
in position, place control arm on Tool J-5888-3.
Hand start bushing into control arm and over end of
cross shaft.
NOTE:
The end of the shaft with the two bolt
holes should be toward front of control arm.
2.
Install Tool J-7052-5 over bushing. Be certain
three-piece spacer is not over-lapping bushing holes
in control arm.
3.
Press bushing into control arm until flange contacts
control arm (fig. 36).
4.
Invert arm in press and repeat the process on the
other bushing. After installation, cross shaft should
be free enough to be rotated by hand.
5. Install collar, lock washer and cap screw in each end
of cross shaft. Tighten to torque shown in Specifica-
tions after spring installation.
UPPER CONTROL ARM SPHERICAL JOINT
Chevrolet, Chevelle, Comoro and Corvette
Inspection
The upper spherical joint is checked for wear by
checking the torque required to rotate the ball stud in the
assembly. After performing the first four steps under
"Replacement" below, install a stud nut on the stud and
measure the torque required to turn the stud in the as-
sembly with a torque wrench. Specified torque for a new
joint is 9 lbs. ft. If torque readings are excessively
high or low, replace the ball joint. If excessive wear is
indicated in upper joint, both upper and lower joints
should be replaced.
NOTE:
This inspection does not necessitate
upper control arm removal.
Replacement
1.
Support the vehicle weight at the outer end of the
lower control arm.
2.
Remove the wheel and tire assembly.
3.
Remove cotter pin and nut from upper control arm
ball stud.
4.
Remove the stud from knuckle.
5. Cut off the ball joint rivets with a chisel.
6. Install new joint and retain in place with the special
nuts and bolts supplied.
7. Reassemble ball stud to the steering knuckle.
Chevy II
Inspection
The following on-the-vehicle check is to determine ball
joint wear.
NOTE:
The upper ball joint is a loose fit when
not connected to the steering knuckle. Wear may
be checked without disassembling the ball stud
by
using'
the following procedure:
1.
While vehicle weight is still on front wheels, insert
upper control arm support as shown in Figure 14.
2.
Raise vehicle and allow wheel and tire to hang free.
3.
Measure distance from tip of ball stud to top surface
of control arm.
4.
Place adjustable jackstand under tire and raise
slightly to take up ball joint looseness.
5. Repeat Step 3 and if the difference in measurements
exceeds 3/32", the joint is excessively worn and
should be replaced.
Replacement
1.
With vehicle weight still on front wheels, install
spacer between upper control arm and frame side
rail (fig. 15). Raise vehicle.
2.
Remove wheel and tire.
3.
Disconnect stabilizer link (if present) and strut rod
at lower control arm.
4.
Remove cotter pin and nut from upper ball joint stud.
5. Break ball stud loose. Drop lower control arm,
steering knuckle and brake assembly with an adjust-
able jackstand until upper control arm ball joint is
easily accessible.
6. Using a large chisel, cut off the three ball joint re-
taining plate rivet heads. It may be necessary to
drill out rivet heads before chiseling.
CHEVROLET CHASSIS SERVICE MANUAL
Page 196 of 659
REAR SUSPENSION AND DRIVE LINE 4-6
Fig.
10—Toe-in Adjusting Shim Location (Corvette)
Toe-in
Wheel toe-in is adjusted by inserting shims of varying
thickness inside the frame side member on both sides
of the torque arm pivot bushing (fig. 10). Shims are
available in thicknesses of
1/64",
1/32",
1/8" and 1/4".
To adjust toe-in, remove torque arm pivot bolt; then
position torque arm to obtain specified toe-in. Shim gap
toward vehicle centerline between torque arm bushing
and frame side inner wall.
NOTE: Do not use thicker shim than necessary,
and do not use undue force when shimming inner
side of torque arm - to do so may cause toe
setting to change.
Shim outboard gap as necessary to obtain solid stack-
up between torque arm bushing and inner wall of frame
side member. After correct shim stack has been se-
lected, install pivot bolt and hardened washers (fig. 10) -
making sure that all shims are retained - torque nut to
specifications and install cotter pin. If specified torque
does not permit cotter pin insertion, tighten nut to next
flat.
WHEEL BEARING ADJUSTMENT (CORVETTE)
inspection
The tapered-roller spindle bearings should have end
play of .001" to
.008".
During inspection, check end
play and, when necessary, adjust as outlined in this
section.
1.
Raise rear of vehicle until wheels clear ground.
2.
Disengage bolt lock tabs and disconnect outboard end
of axle drive shaft from wheel spindle flange.
3.
Mark camber cam in relation to bracket. Loosen and
turn camber bolt until strut rod forces control arm
outward. Position loose end of axle drive shaft to
one side for access to spindle.
4.
Remove wheel and tire assembly. Mount dial in-
dicator (Tool J-8001) on torque arm or adjacent
surface and rest pointer on flange or spindle end
(fig. H).
5.
Grasp brake disc and move axially (in and out) while
reading movement on dial indicator. If end movement
is within the .001" to .008" limit, bearings do not
require adjustment. If not within .001" to .008"
limit, record reading for future reference and adjust
bearings as outlined below.
Adjustment
1.
Apply parking brake to prevent spindle from turning
and remove cotter pin and nut from spindle.
2.
Release parking brake and remove drive spindle
flange from splined end of spindle.
3.
Remove brake caliper and brake disc as outlined in
Section 5.
4.
Install Thread Protector J-21859-2 over spindle
threads; then remove drive spindle from spindle
support, using Tool J-22602 as shown in Figure 12.
CAUTION: When using Tool J-22601 to remove
drive spindle, make sure puller plate is posi-
Fig.
11—Checking Wheel Bearing Adjustment (Corvette)
Fig. 12—Removing Drive Spindle from Support (Corvette)
CHEVROLET CHASSIS SERVICE MANUAL