weight CHEVROLET CAMARO 1967 1.G Chassis User Guide

FRONT SUSPENSION 3-18

CHEVROLET
CHEVELLE

CAMARO (TYPICAL)

CHEVY U
LOWER CONTROL ARM

CORVETTE

Fig.
30 - Lower Control Arm Attachment

2.
Raise lower control arm and insert ball stud into

steering knuckle lower boss. Install nut and insert

new cotter pin. Install stabilizer linkage.

Lube Fittings

Special self threading type lube fittings are used in the

spherical joint assemblies. If it is necessary to replace

a fitting a standard threaded type may be used. However,

replacement spherical joint assemblies are supplied less

the lube fitting. Therefore it will be necessary to install

a self threading type fitting into the untapped hole pro-

vided when replacing the entire assembly.

LOWER CONTROL ARM

Chevrolet (Fig. 30)

Removal

1.
Remove the coil spring as outlined previously.

2.
Remove lower control arm ball stud cotter pin and

loosen nut. Loosen the ball stud, then remove nut

and lower control arm.

CAUTION: Use extreme care not to damage

the seal during this operation.
Installation

1.
Insert lower control arm ball stud into the steering

boss,
install the nut and insert new cotter pin.

2.
Install the coil spring as outlined previously.

3.
Tighten nuts to torque shown in Specifications.

Chevelle and Camaro (Fig. 30)

Removal

1.
Remove the front coil spring as outlined previously.

2;
Remove the two control arm to frame and cross-

member bracket attaching bolts and lock washers.

3.
Remove the lower control arm assembly.

Installation

1.
With the control arm in place in frame and cross-

member brackets, install the front and rear attaching

bolts,
nuts and lock washers.

2.
Install the coil spring as outlined under "Front Coil

Spring - Installation".

3.
Tighten the nuts to torque shown in Specifications.

Chevy II (Fig. 30)

Removal

1.
With vehicle weight still on front wheels, install

CHEVROLET CHASSIS SERVICE MANUAL

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

FRONT SUSPENSION
3-22

CHEVROLET

s-L 1 \
TYPICAL
OF

-^-x ^K CORVETTE, CHEVELLE AND CAMARO

CHEVY n

Rg.
37 - Upper Control Arm Attachment

NOTE:
Additional support to upper control

arm may be necessary while chiseling.

7. Clean ball joint seat in arm and inspect for cracking

or other evidence of fatigue. If cracks are present at

the rivet holes or ball joint opening, replace arm as

outlined later in this section.

8. Attach replacement ball joint assembly to the control

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.
9. Raise lower control arm and steering knuckle as-

sembly into position, insert upper ball stud into up-

per steering knuckle and install stud nut. Torque

nut as shown in the specifications and insert new

cotter pin. Install stabilizer and strut rod.

10.
Lubricate ball joint, install wheel and tire and re-

move adjustable jackstand.

11.
Lower vehicle and remove upper control arm spacer.

12.
Check and readjust caster and camber angles where

necessary.

LUBE FITTINGS

Special self threading type lube fittings are used in the

spherical joint assemblies. If it is necessary to replace

a fitting a standard threaded type may be used. However,

replacement spherical joint assemblies are supplied less

the lube fitting. Therefore it will be necessary to install

a self threading type fitting into the untapped hole pro-

vided when replacing the entire assembly.

UPPER CONTROL ARM

Chevrolet, Chevelle, Camaro and Corvette

(Fig.
37)

Removal

1.
Support vehicle weight at outer end of lower control

arm.

2.
Remove wheel and tire assembly.

3.
Remove cotter pin and nut from upper control arm

ball stud. ,

4.
REMOVE The stud from knuckle.

5. Remove two nuts retaining upper control arm shaft to

front crossmember. (Chevelle, Camaro and Cor-

vette—Note number of shims at each bolt.)

6. Remove the bolts attaching the control arm to the

frame to allow proper clearance for control arm

removal if necessary.

7. Remove upper control arm from vehicle.

Installation

1.
Install upper control arm in vehicle.

2.
Install nuts, bolts and lock washers retaining upper

control arm shaft to frame. (Chevelle, Camaro and

Corvette—Install same number of shims as removed

at each bolt.)

3.
Torque nuts as shown in the Specifications at the end

of this book.

4.
Install ball stud through knuckle, install nut, tighten

and install cotter pin.

5. Install wheel and tire assembly.

6. Lower vehicle to floor.

7. Bounce front end of vehicle to centralize bushings

and tighten bushing collar bolts as shown in the

Specifications.

Chevy II (Fig. 37)

Removal

1.
Remove spring and shock absorber as outlined above.

2.
Position adjustable jackstand under lower control

arm.

3.
Remove cotter pin and nut from upper ball joint stud

and strike steering knuckle boss to loosen stud.

4.
Drop lower control arm and steering knuckle

assembly.

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-5

Fig.
6—Measuring Rear Riding Height (Chevrolet and Chevelle)

RIDING HEIGHT CHECK

(Chevrolet, Chevelle Camaro and Chevy II)

In case of vehicle riding height complaints, a spring

height check will show if the rear suspension is at the

right height.

1.
Position car on smooth level floor.

2.
Vehicle must be at curb weight (full gas tank, no

passengers, spare and jack in trunk). Car should be

raised up a few times to allow suspension to settle

with car weight to eliminate friction at arm pivots.

3.
On Chevrolet and Chevelle models, measure riding
Fig.
8—Measuring Rear Riding Height (Camaro)

height as the distance from the top of the axle hous-

ing to frame kick-up (fig. 6).

4.
On Chevy II models, measure riding height as the

distance from lower surface of bumper support

bracket to top of axle housing (fig. 7).

5.
On Camaro models measure riding height as the

distance from jounce bumper upper attaching bolt to

top of axle housing (fig. 8).

6. Riding heights vary between models* Refer to speci-

fications section for vehicle and model application.

WHEEL ALIGNMENT (CORVETTE)

Camber

Wheel camber angle is obtained by adjusting the eccen-

tric cam and bolt assembly located at the inboard mount-

ing of the strut rod (fig. 9). Place rear wheels on

alignment machine and determine camber angle. To

adjust, loosen cam bolt nut and rotate cam and bolt as-

sembly until specified camber is reached. Tighten nut

securely and torque to specifications.

Fig.
7—Rear Riding Height (Chevy II)
Fig.
9—Ad
justing
Rear Wheel Camber (Corvette)

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-7

tioned vertically in the torque arm before ap-

plying pressure to the puller screw.

5.
Remove shim and bearing spacer from spindle

support.

6. Note size of shim used. If dial indicator reading

was more than
.008",
select a shim thinner by the

amount needed to bring end play within limits. If

dial indicator reading was less than
.001",
select a

shim thicker by the amount needed to bring end play

within limits.

NOTE: Shims are available in thicknesses from

.097"
to .148" in increments of
.003".

EXAMPLE: Bearing end play reading obtained

on dial indicator was
.011",
.003" over limit.

Bearing shim removed from spindle measures

.145".
New shim installed measures .139", .006"

smaller. End play is now decreased by .006" and

is
.005",
which is within the .001" to .008" limit.

7.
After determining shim thickness, install bearing

spacer and shim on spindle. Position spindle in

spindle support.

8. Press inner bearing race and roller assembly on

spindle as follows.

a. Position Tool J-4731 over spindle and against

bearing inner race.

b.
Position washer and spindle nut on spindle and

proceed to tighten nut until bearing is forced on

spindle sufficiently to allow spindle drive flange

to be installed (fig. 13). Remove spindle nut,

washer and Tool
J-4731.
Discard nut and use a

new one for final assembly.

9. Position drive flange over spindle, making sure

flange is aligned with spindle splines. Install washer
Fig.
13—Installing Drive Spindle to Support (Corvette)

and nut on spindle then tighten nut to specifications

and install cotter pin. If specified torque does not

permit cotter pin insertion, tighten nut to next flat.

10.
Seat spindle support outer seal in bore by using

screw driver, or other suitable tool, to press against

metal portion of seal.

11.
Install brake disc and caliper. Refer to Section 5

for details of brake disc and caliper installation.

12.
Install axle drive shaft, wheel and tire assembly,

adjust camber cam to original position and torque

all components to specifications.

COMPONENT PARTS REPLACEMENT

(Chevrolet, Chevelle, Chevy II and Camaro)

COIL SPRING

Chevrolet

Removal

To remove either or both rear coil springs proceed

as follows.

1.
Raise rear of vehicle and place jack stands under

frame. Support vehicle weight at rear, using either

a jack or post of twin-post hoist under axle.

2.
Remove both rear wheels from vehicle.

3.
With the car supported as in Step 1, so that the rear

springs are compressed by weight of vehicle; per-

form the following:

a. Disconnect both rear shock absorbers from the

anchor pin lower attachment.

b.
Loosen the upper control arm(s) rear pivot bolt

(do not remove the nut).

C. Loosen both the left and the right lower control

arm rear attachment (do not disconnect from axle

brackets).

d. Remove the rear suspension tie rod from the

stud on the axle tube.

4.
At the lower seat of both rear coil springs, slightly

loosen the nut on the bolt that retains the spring and

seat to the control arm. When the nut has been

backed off the maximum permissible, all threads of
the nut should still be engaged on the bolt.

CAUTION: Under ,no condition should the nut,

at this time, be removed from the bolt in the

seat of either spring.

5.
Slowly lower the support (jack or hoist post) that has

been in place under the rear axle, thereby allowing

the axle to swing down, carrying the springs out of

their upper seat and providing access for spring

removal.

6. Remove the lower seat attaching parts from each

spring, then remove the springs from the vehicle

(fig. 14).

Installation

1.
Position the springs in their upper seat so that end

of top coil is 3/8" ± 1/8" from end of stop. Install

the lower seat parts on the control arm, with the nut

finger tight on the spring retainer bolt.

NOTE: Omit the lock washer under the special

high carbon bolt, so that sufficient bolt thread

will be available to start the nut. The lock

washers will be installed later (in Step 4).

2.
By alternately raising the axle slightly and then

re-snugging the nut on each spring lower seat bolt,

move the axle upward until vehicle weight is fully

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-10

Fig.
22—Rear Spring Shackle Exploded View—Station Wagon

(Chevy II)

4.
Place upper spring pad cushion on spring. Raise

spring, making sure spring cushion ribs index with

locating ribs in axle housing spring seat, and insert

spring front eye and bushing in frame bracket. In-

stall spring eye bolt, bushing, retainer, lock washer

and nut. Do not torque at this point.

5.
Place lower spring pad cushion on spring, indexing

it over locating dowel.

NOTE: Upper pad correctly installed when

aligned with lower pad.

6. Place lower mounting plate into position over lo-

cating dowel on spring pad, install four locknuts and

insert shock absorber lower eye bolt.

7.
Remove adjustable jackstands, lower vehicle to floor

and bounce several times. Torque all affected parts

to specifications. Incorrect bushing preload may

result if spring eye bolts are torqued prior to

lowering vehicle.

Camaro (Fig. 23)

Removal

1.
Raise rear of vehicle sufficiently to allow axle as-

sembly to hang freely; then support weight of vehicle

at both frame side rails and near front eye of

spring.

Fig.
23—Rear Spring—Exploded View (Camaro)
Fig.
24—Removing Spring Front Bushing (Camaro)

2.
Raise axle assembly so that all tension is removed

from spring.

3.
Loosen and remove shock absorber lower attaching

bolt.

4.
Loosen the spring eye-to-bracket retaining bolt.

5.
Remove the screws securing the spring retainer

bracket to the underbody.

6. Lower axle assembly sufficiently to permit access to

spring retainer bracket and remove bracket from

spring.

7.
The spring eye bushing can be replaced without

completely removing the spring from the vehicle,

if bushing requires replacement proceed as follows.

a. Position remover adapter J-21978-1 over puller

screw J-21058-15 so that adapter is against head

of puller screw. Refer to Figure 24 for view of

removal tools.

b.
Position puller screw through eye of bushing so

that remover adapter J-21978-1 is against un-

flanged side of bushing.

C. Position large end of barrel J-22553-1 over

puller screw and seat barrel against spring eye.

d. Position thrust bearing on puller screw then in-

stall and tighten nut J-21058-8 against thrust

bearing.

e. Check to make sure that all puller parts are

properly aligned then proceed to tighten nut until

bushing is pulled free of spring eye--disassemble

puller tool.

f. Position installer adapter J-22553-2 over flange

end of bushing then position puller screw

J-21058-15 through installer adapter and bush-

ing. Refer to Figure 25 for view of installation

tools.

g. Position puller screw through spring eye until

bushing contacts spring. Install small end of

barrel J-22553-1 over puller screw and seat

barrel against spring.

h. Install thrust bearing and nut J-21058-8. Check

puller tools and bushing for proper alignment;

then tighten nut to pull bushing into spring.

NOTE: Do not apply additional torque to nut

J-21058-8 after bushing flange contacts spring.

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-11

lower cushion

correct.
will be aligned if installation is

Fig.
25—Installing Spring Front Bushing (Camaro)

Unnecessary torque applied after flange is

seated will tend to distort flange and reposition

bushing in spring.

i. Disassemble bushing installation tools and re-

move from spring.

8. Pry parking brake cable out of the retainer bracket

mounted on the spring mounting plate.

9. Remove spring bracket-to-axle bracket retaining

nuts,
remove upper and lower rubber spring pads

and bracket.

10.
Support spring, then remove lower bolt from spring

rear shackle. Separate shackle and withdraw spring

from vehicle.

11.
Remove rear spring shackle upper bolt and withdraw

shackle bushings from frame.

Installation

1.
Position spring front mounting bracket to spring

front eye. Spring attaching bolt must be installed

so that head of bolt is toward center of vehicle.

2.
Position spring shackle upper bushings in frame,

position shackles to bushings and loosely install

bolt and nut.

3.
Install bushing halves in spring rear eye, place

spring to shackles and loosely install shackle lower

bolt and nut.

NOTE: When installing spring, make sure

spring is positioned so that parking brake cable

is on underside of spring.

4.
Raise front end of spring and position bracket to

underbody. Guide spring into position so that it will

index in the axle bracket and also make sure that

the tab on spring bracket is indexed in slot pro-

vided in the underbody.

5.
Loosely install spring-to-underbody bracket.

6. Position spring upper cushion between spring and

axle bracket so that spring cushion ribs align with

axle bracket locating ribs.

7.
Place lower spring cushion on spring so that .cushion

is indexed on locating dowel. Upper cushion and
8. Place lower mounting plate over locating dowel on

spring lower pad and loosely install retaining nuts.

9. If new mounting plate was installed, transfer parking

brake cable retaining bracket to new plate.

10.
Position shock absorber to spring mounting plate and

loosely install eye bolt and nut - head of bolt should

be toward front of vehicle.

11.
Position parking brake cable in retaining bracket and

securely clamp bracket to retain cable.

12.
Remove stand jacks and lower vehicle so that weight

of vehicle rests on suspension components. Torque

all affected parts to specifications.

SHOCK ABSORBER

Chevrolet and Chevelle

Removal

1.
Raise rear of vehicle and support rear axle

assembly.

If equipped with superlift shock absorber, disconnect

air line from shock absorber.

Disconnect shock absorber at upper mounting bracket

by removing the two retaining bolts. Refer to Figure

26 for shock absorber mounting details. (Chevelle

components shown as typical.)

Disconnect shock absorber at lower attaching bracket

and remove shock.

NOTE: When performing any service opera-

tions that requires removal or loosening of the

lower attaching nut, it is essential that the stud

be prevented from turning. A hex is located on

the stud between the axle bracket and shock

absorber in order that a wrench may be used

for this purpose. Failure to hold the stud in

this manner will result in damage to the mer

chanical bond between the shock absorber bush-

ing and the mounting stud.
2.

3.

STATION WAGON AND PICKUP

Fig.
26—Shock Absorber Mounting—Exploded View

(Chevelle)

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-14

Fig.
32—Upper Control Arm Bushing Installation (Chevrolet)

Installation

1.
Position rear of control arm into axle bracket and

loosely install the pivot bolt.

2.
Align the forward end of the control arm with the

rear crossmember and install front bracket bolts

through holes. Raise or lower nose of carrier as

/ required to help align bracket and crossmember.

3.
Install crossmember reinforcement plate, lock

washers and nuts to retain bracket in place.

4.
Position vehicle so that weight is on suspension

components and torque all affected parts to

specifications.

Chevrolet Lower

Removal

1.
Raise vehicle and remove shock absorber and spring

as outlined in this section.
NOTE:
If both rear suspension lower control

arms are to be removed, support the rear axle

in such a manner to prevent damage to brake

lines and to prevent assembly from falling.

2.
Note position of control arm in forward attaching

bracket and disconnect control arm at forward and

rearward attaching points. Remove assembly from

vehicle.

Bushing Replacement

Lower control arm front and rear bushing assemblies

are not interchangeable and require separate removal

and installation procedures.

1.
Replace the front bushing as follows.

a. Center Receiver J-7574-4 over flanged end of

bushing and position Spacer J-7574-3 over bush-

ing and between sides of control arm. Using

Remover J- 7574-1 against small end of bushing,

press bushing from control arm. Refer to Figure

33 for installed view of tools.

b.
Position bushing in control arm making sure of

correct installation. Small end of bushing will

pass through one side without any interference.

c. Position Puller Screw J-21058-15 through In-

staller Adapter J-7574-2--head of puller screw

should rest against flat side of adapter.

d. Install adapter and screw through bushing with

adapter resting against flange portion of bushing.

Install Receiver J-21058-6 and Bridge J^-21058-7

on opposite side of control arm (fig. 34).

e. Install thrust bearing and Nut J-21058-8. Screw

nut against J-21058-7 to maintain proper relation-

Fig.
33—Lower Control Arm Front Bushing Removal (Chevrolet)
Fig. 34—Lower Control Arm Front Bushing Installation

(Chevrolet)

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-15

ship of parts, then install Spacer J-
7574-
3 over

the partially installed bushing and between the

sides of the control arm.

f. Continue to tighten J-
21058-
8
until bushing is

pulled flush against control arm. Do not exert

undue force against control arm after bushing is

installed. Overtightening of J-21058-
8
will cause

damage to walls of control arm.

g. Disassemble tools and inspect bushing for proper

installation.

Replace the rear bushing as follows:

a. Position Puller Screw J-21058-8 through Re-

mover Adapter J-21830-2 so that head of screw

is opposite button end of remover. Install this

assembly, threaded end of sc'rew first, through

bushing to be removed.

b.
Install Receiver J-21830-4 and Bridge J-21830-7

. over screw and against control arm. Position

thrust bearing against J-21830-7 and screw

J-21058-8 snugly against bearing. Install Spacer

J-
2183d-
3
between sides of control arm and over

bushing.

c. Check tool installation for proper alignment and

tighten J-21058-8 to withdraw bushing from con-

trol arm. Refer to Figure 35 for installed view

of tools.

d. Disassemble tools and position Installer Adapter

J-21830-2 on flanged end of new bushing. Posi-

tion bushing in control arm making sure of cor-

rect installation. Small end of bushing will pass

through one side of arm without any interference.

e. Install J-21830-4, J-21830-7, thrust bearing and

J-21058-8 on threaded end of J-21058-15 as

shown in Figure 36. Tighten J-21058 to main-

tain proper relationship of parts; then position

Spacer J- 21830- 3 over bushing and between sides

of control arm.

f. Tighten J-21058-8 until bushing is fully seated
J-21058-8 J-21830-7 J-21830-4 J-21830-3 J-21830-2

\

J-2K

X
D58-8
J-218
30-7

IP

•he?

21830-4
J-21830-2

JfSir

J-21830-3

Fig.
35—Lower Control Arm Rear Bushing Removal

(Chevrolet)
Fig.
36—Lower Control Arm Rear Bushing Installation

(Chevrolet)

against side of control arm. Do not apply undue

pressure to J-21058 after bushing is seated--to

do so may cause permanent distortion to control

arm.

g. Disassemble tools and check bushing for proper

installation.

Installation

NOTE:
Make sure control arm is reinstalled

in proper forward attaching position. Reinstall

in same hole as noted during removal. Top

attaching hole is used for all installations except

station wagons and heavy-duty suspension (RPO

F41).
Opposite arm must be installed in cor-

responding position.

1.
Position the control arm between the mounting

brackets and loosely install the pivot bolt retaining

nuts in the proper position.

2.
Install spring and shock absorber as outlined in this

section.

3.
Lower vehicle so that weight is placed on sus-

pension components and torque all affected parts to

specifications.

Chevelle Upper and Lower

Removal

NOTE:
If both upper control arms and both

lower control arms are to be removed at the

same time, remove both coil springs as outlined

under "Coil Spring Removal".

1.
Raise vehicle to a height that will allow axle assem-

bly to hand freely and position supports under both

frame side rails.

2.
Support axle assembly with an adjustable lifting de-

vice and raise rear axle assembly until tension is

relieved in control arm being removed.

3.
Disconnect control arm at forward and rearward

attaching points and remove from vehicle.

Bushing Replacement

The upper arm front bushing and carrier ear bushings

are of the same part number and are interchangeable.

CHEVROLET CHASSIS SERVICE MANUAL

REAR SUSPENSION AND DRIVE LINE 4-40

Fig.
106—Removing Propeller Shaft from Companion Flange

PROPELLER SHAFT (SAGINAW)

Removal

1.
Raise vehicle sufficiently to permit access to propel-

ler shaft and mark relationship of rear yoke to

companion flange.

2.
Remove trunnion bearing retaining strap attaching

screws from both bearings (fig. 106).

3.
Lower rear of propeller shaft, being careful not to

dislodge bearing caps from trunnion, and tape bear-

ing caps to trunnion.

4.
Withdraw propeller shaft front yoke from transmis-

.sion by moving shaft rearward, passing it under the

axle housing. Watch for oil leakage from transmis-

sion output shaft housing.

Repairs

NOTE:
Because of the elastic properties of the

nylon retainers, the trunnions must be pressed

from the yokes. Pressing the trunnions from the

yokes will shear the retainers which renders

the bearing caps unsuitable for reuse. A service

Jdt, which employs a snap ring to retain the

trunnion, must be used when reassembling the

propeller shaft (fig. 107).

1.
Remove trunnion at differential end of propeller shaft

Fig.
107—Service Kir Trunnion (Saginaw)
Fig.
108—Pressing Trunnion Bearing from Propeller Shaft

using the following procedure:

a. Support trunnion on a press bed so that the

propeller shaft yoke can be moved downward.

Support front of propeller shaft so that shaft is

in a horizontal position.

b.
Using a piece of pipe or similar tool, with an ins-

side diameter slightly larger than 1 1/8", press

bearing from yoke (fig. 108).

c. Apply force on yoke around bearing until nylon

retainer breaks. Continue to apply force until the

downward movement of the yoke forces the bear-

ing as far as possible from the yoke (fig. 109).

d. Complete removal of bearing by tapping around

circumference of exposed portion with a small

hammer (fig. 110).

e. Rotate propeller shaft so that opposite bearing

-may be removed in the manner described above.

f. Remove trunnion from yoke.

Remove trunnion at transmission end of propeller

shaft using the following procedure:

a. Support splined yoke on a press bed and the rear

of the propeller shaft on a stand so that shaft is

horizontal. Be sure that weight is evenly dis-

tributed on each side of the splined yoke and that

the fixed yoke half of the "U" joint is free to

move downward.

b.
Using a piece of pipe or similar tool, with an

inside diameter slightly larger than 1 1/8", press

bearing from yoke (fig. 108).

c. Apply force on yoke around bearing until nylon

retainer breaks. Continue to apply force until the

downward movement of the yoke forces the bear-

ing as far as possible from the yoke (fig. 109).

d. Complete removal of bearing by tapping around

circumference of exposed portion with a small

hammer (fig. 110).

e. Rotate propeller shaft so that opposite bearing

may be removed in the manner described above.

f. Remove splined yoke and trunnion from propeller

shaft.

CHEVROLET CHASSIS SERVICE MANUAL