1967 CHEVROLET CAMARO ECU

CORVETTE BODY 1B-52

and pull weatherstrip and trim from rear bow.

Section A-A shows installed position of these com-

ponents. Refer also to figure 105.

installation

1.
Find and mark center of header, #3 bow, rear bow

and leading and trailing edges of top trim. Align

these marks during installation and recheck their

alignment from time to time while installation is in

progress, especially during tacking or stapling.

2.
Assemble top trim and weatherstrip to rear bow,

referring to Section A-A and Figure 105. Note that

filler strip locks this assembly together and goes

in last. Align center marks.

3.
If new pads are required, install at this time, align-

ing with marks made when old pads were removed.

Figure 106 shows pad construction; Figure 107 shows

pad installed.

4.
Install top trim-rear bow assembly on top frame

with four screws removed at disassembly.

5.
Lock down rear bow in desired "top up" position.

Pull up stay straps and staple or tack to #3 bow

(fig. 108).

6. Pull leading edge of trim iip to header and align

center marks. Smooth out fabric and clamp, tack

or staple temporarily to header.

7.
Draw window extension up to #3 bow, aligning cen-

tering marks. Turn an ample amount of fabric under

and tack to #3 bow. Apply neoprene trim cement,

GM Part #3695016 or equivalent, to area shown in

View D of Figure 102. Follow directions on package.

8. Draw roof portion of trim over #3 bow, align marks

and tack on staple.

9. Trim off excess material and install wire-on binding

as shown in Figure 109 and View D of Figure 102.

Install binding caps.

10.
Remove temporary clamps or fastenings holding trim

to header.

11.
With header locked down, pull trim assembly up tight

and mark for final installation.

12.
Apply trim cement to header and rear side rail.

13.
Release header from windshield. Tack or staple trim

to header (fig. 103).

14.
Apply trim to rear side frame, previously cemented.

15.
Install weatherstrips which were removed at dis-

assembly and install retaining screws in header

weatherstrip.

16.
Make any adjustments necessary, following instruc-

tions listed under Folding Top—Adjustments.

FRAME AND LINKAGE

Figure 110 illustrates construction features of the

folding top frame and linkage. Various cross sections in

Figure 110 show the pivoting joints and their assembly.

If an operation is being performed which requires

removal of folding top trim, follow directions in this

section. The entire frame assembly may be removed and

replaced as a unit. Follow instructions for Folding Top

Trim and Rear Window Assembly and Top Assembly—

Removal and Installation.

The pivoting joints should be lubricated with light

machine oil once a year. Apply oil sparingly so as not

to stain top trim.
WEATHERSTRIP

Side Rail Weatherstrip

Figure 111 illustrates installation of side rail weather-

strip which acts to seal window opening. The weather-

strip is held in place by studs which are part of the

weatherstrip assembly, and by neoprene base cement

which is applied between weatherstrip and side rail

surface.

When replacing weatherstrip remove all rust, old

cement and foreign material from the surfaces to be

cemented, to assure successful bonding. Use only good

quality neoprene cement suitable for weatherstrip

application.

Header Weatherstrip

Weatherstrip assembly is retained to the header panel

by a combination of studs, sheet metal screws and special

fasteners as shown in Figure 112, along with neoprene

base weatherstrip cement.

Figure 99 shows' a cross section of weatherstrip taken

through a special fastener. To replace fastener, rotate

ninety degrees to align fastener head with slot. Follow

directions for cementing in the Side Rail Weatherstrip

instructions preceding this write up.

ADDING HARDTOP (ROOF PANEL ASSEMBLY)

An available roof panel assembly (hardtop) complete

can be added to convertible model Corvettes. The hard-

ware is included with the panel assembly.

Reworking of a plastic part (one for each side of the

roof panel) can be used as a marker for drilling of two

required holes in the folding top compartment lid* Hard-

ware is attached at four locations — two on the lid and

two (one each side) at the lock pillar area as follows:

1.
Rework two plastic retainers (#6280765) (used on

Chevrolet and Corvair door inner panels for trim

retention) as shown by Figure 113.

2.
Slide the reworked plastic retainers into the bolt re-

tainer slots on each side of the hardtop rear bow

(position plastic tip inboard).

3.
Mark the hardtop reveal molding at the approximate

location of the two plastic retainers,

4.
Mark the tips of the two plastic retainers with a

china marker pencil.

5.
Close the soft top compartment lid.

6. With aid of an ^assistant, position front of hardtop

onto header and lower onto vehicle. Do not fasten

latches at windshield header.

7.
Apply hand pressure at reveal molding marks.

8. Mark roof panel attachment hole location at each

lock pillar area (fig. 114).

9. With aid of an assistant, lift roof panel straight up

off body and set roof panel aside.

10.
Mark the drill position at the four china marks with

a center punch.

11.
Place a 2" x 4" board under the top compartment lid

to prevent drill damage to folding top material. Make

certain the compartment lid is securely locked

before drilling.

12.
Drill 1/8" pilot hole at the 4 marked locations.

CHEVROLET CHASSIS SERVICE MANUAL

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

FRONT SUSPENSION 3-15

4.
Insert Spring Compressor J-
6874-
4-
5 with Adapters

J-6874-8-9 into upp^r spring tower so that lower

MU"
bolt fits into shock absorber mounting holes in

spring seat (fig. 23). Secure the two lower studs to

the spring seat with nuts.

5.
Fit the tool upper pilot to top of spring and compress

spring by tightening upper nut (fig. 24). Compress

spring until screw is bottomed out.

6. Remove lower spring seat retaining nuts, lift spring

and seat assembly from control arm and guide it

down and out through fender skirt (fig. 25).

Spring Seat Replacement (Fig. 26)

1.
Release spring tension and disconnect spring com-

pressor from spring seat.

2.
Install new spring seat to spring compressor.

Installation

1.
If spring is to be replaced, install new spring into

tool and compress spring until screw is bottomed

out.

NOTE: Spring coil ends must be against spring

stops in upper and lower seats.

2.
Lift spring and tool assembly into place and position

so that the upper spring stop is inboard.

NOTE: Locating tab on upper spring seat may

be flattened before reinstalling spring.

3.
Install lower spring seat to control arm and torque

nuts as shown in the Specifications.

4.
Loosen spring compressor until spring is properly

seated in upper spring tower and remove.

5.
Install shock abosrber as outlined under Shock Ab-

sorber—Installation in this section.

Corvette

Removal

1.
With car on suitable hoist or jack, (support vehicle

by frame so control arms may swing free) remove

wheel and tire assembly, stabilizer bar and shock

absorber. Loosen the lower ball joint to steering

knuckle nut, and the' two lower control arm cross

shaft bushing bolts.

2.
Place Tool J-6874-1 across top of sixth coil (ap-

prox.),
then loosely secure Tool J-6874-2 to the up-

per shoe, with attaching capscrews and lock washers.

The upper shoe "V" notch and lower shoe raised land

should contact spring.

3.
Insert Tool J-6874 up through center of spring and

attach to upper and lower shoe assembly.

4.
Position spacers under shock absorber mounting hole

and against bottom of lower control arm. Install

special bearing washer and Tool J-6874-5. Locate

bearing against spacer and large washer against

bearing. Feed screw up through large washer bear-

ing and spacer and thread into Tool J-6874 and

tighten snugly (fig. 22).

5.
Center shoe assembly on spring and tighten screw

until a very slight compression is placed on spring

(fig. '22). Then firmly tighten down the two cap-

screws securing the upper and lower shoes to lock

these shoes to spring.

6. Turn head of screw until spring is compressed just

enough to clear the spring tower, then remove the

lower ball joint to steering knuckle nut (fig. 22).
NOTE: It may be necessary to assist the

spring out of the spring tower with a pry bar or

a similar tool.

7.
Disconnect the lower ball joint from the steering

knuckle and lower the control arm with the com-

pressed spring. Immediately release compression

on spring by backing off long screw. Release spring

and tool and withdraw spring.

CAUTION: The spring force under compres-

sion is very large. Exercise every safety pre-

caution when performing this operation to see

that individuals and materials subject to damage

are removed from the path of the spring when

the control arm is being lowered. Also, the

compressed spring
be relaxed immedi-

ately after lowering the control arm to reduce

the time of exposure to the large compressive

force.

Installation

1.
Position spring with closely coiled end up. Place

Tool J-6874-1 across the top of the sixth coil (ap-

prox.) then loosely secure Tool J-6874-2 to the

upper shoe with attaching capscrews and lock wash-

ers.
The upper shoe MV" notch and lower shoe

raised land should contact spring.

2.
Insert Tool J-6874 up through center of spring and

attach to upper and lower shoe assembly with bolt

and nut.

3.
Set spring in its seat on the lower control arm.

4.
Position spacers centrally under shock absorber

mounting hole and against bottom of lower control

arm. Install bearing, large washer and Tool

J-6874-5.
Locate bearing against spacer and large

washer against bearing. Feed the screw up through

large washer, bearing and spacer and thread into

yoke rod. Tighten snugly, but do not start to draw

down yet

5.
Center the shoe assembly on the spring and tighten

the lag screw until a very slight compression is

placed on spring, then firmly tighten down the two

capscrews securing the upper and lower shoes. This

will lock the shoes to the coil spring.

6. Turn head of screw until spring is compressed just

enough to clear the spring tower.

NOTE: It may be necessary to assist the

spring into the spring tower with a pry bar or

similar tool.

7.
Immediately install the lower ball joint into steering

knuckle and secure in place with attaching nut.

8. Release compression on spring and at the same time

use a drift to guide the coil spring into its proper

seat. End of coils must be 3/8" from coil stops in

spring seat.

9. Tighten the lower ball joint to steering knuckle nut

and lock with cotter key.

10.
Install shock absorber and stabilizer bar.

11.
Install wheel, tire and drum assembly.

12.
Remove car from hoist or jack stands.

13.
Tighten the two lower control cross shaft bushing

bolts to 45-55 lbs. ft. torque.

NOTE: If a suitable adjustable jack-stand is

CHEVROLET CHASSIS SERVICE MANUAL

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

FRONT
SUSPENSION 3-19

spacer between upper control arm and frame side

rail (fig. 15). Raise vehicle.

2.
Remove lower control arm ball stud cotter pin and

loosen hut.

3.
Loosen ball stud and remove nut. Drop lower control

arm.

CAUTION: Use extreme care not to damage

the seal during this operation? "~~~~

4.
Mark lower control arm pivot bolt and adjusting cam

for realignment. Remove nut securing pivot bolt and

cam assembly. Remove pivot bolt and cam. Remove

lower control arm.

Installation

1.
Insert lower control arm into its support bracket,

index pivot bolt and cams, pivot nut and tighten to

torque shown in Specifications.

2.
Raise lower control arm ball stud into steering

knuckle boss and install nut. Tighten nut to torque

shown in Specifications and insert new cotter pin.

3.
Lower vehicle and remove upper control arm to

frame support.

Corvette (Fig. 30)

Removal

1.
Remove the front coil spring as outlined under

"Front Spring, Removal".

2.
Remove the two front cross shaft to frame attaching

bolts and lock washers and the rear frame attaching

nut and lock washer.

3.
Remove the lower control arm assembly from the

vehicle.

THRUST
BEARING

FLAT
WASHER
REMOVAL

J-21878

J-21830-7

J-21058-8

J-21474-8
/J-21058-15

J-9519-17

J-21830-7

INSTALLATION

J-21058-15

J-2/878 FLAT
REMOVAL
BUSHING

INSTALLATION
BUSHING

CONTROL
J22175

THRUST

ARM
^ ,. / BEARING

Fig.
32 - Lower Control Arm Bushing - Large - Chevelle & Comoro

Installation

1.
Place the control arm so that the cross shaft aligns

with its attaching points.

2.
Attach the cross shaft at the front with two bolts and

lock washers inserted from below into the anchor

BUSHING
REMOVAL

J21474-6

J21474-5
TTf\ ft^\- NUT

BOLT
VHRUST
^22323-^ J21058"8

J21058-15
REARING, / ^_ ^
J21474-13

INSTALLATION

Fig.
31 - Lower Control Arm Bushing - Chevrolet
Fig.
33 - Lower Control Arm Bushing - Small -

Chevelle
& Comoro

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 4-9

Fig.
17—Rear Spring—Exploded View (Chevy II)

LEAF SPRING, SPRING SEAT PADS, SPRING EYE

BUSHINGS Chevy II (Fig. 17)

Removal

1.
Raise vehicle and support rear axle assembly.

2.
Pull parking brake cable out of lower spring pad

mounting bracket clamp and disconnect cable above

axle housing. Remove four nuts securing lower

spring pad mounting bracket to axle spring seat

(fig. 18). Drop lower bracket and remove rubber

spring pad.

3.
Loosen and drive out front spring eye bolt. Lower

spring and remove front rubber eye bushing (fig. 19).

4.
Remove nuts from rear spring shackle (fig. 20),

spread shackle to separate it from spring eye and

support bracket and remove spring. Remove rear

spring eye bushings.

5.
Remove upper spring pad cushion.

Installation

1.
Inspect spring eye bushings and spring pads for ex-

cessive wear or aging and replace as necessary.

Inspect spring rear shackles, front spring bracket

and eye bolt for bending or cracking and correct

where needed.

2.
Assemble spring rear shackle as follows:

a. All except Station Wagons (fig. 21).
Fig.
19—Removing Front Eye Bushings (Chevy II)

3.
' Fig. 20—Disassembling Rear Spring Shackle (Chevy II)

1.
Insert inboard rubber spring eye bushings into

i'ear spring eye and outboard shackle bushings

into shackle mounting bracket.

2.
Position spring and install shackle to spring

and mounting bracket with top nut toward out-

board of vehicle and bottom nut toward vehicle

centerline.

3.
Tighten nuts but-do not torque at this point,

b.
Station Wagon (fig. 22):

When installing shackle as in Step 2 above, top

nut should be toward centerline of vehicle and

bottom nut toward outboard of vehicle.

Insert inboard rubber bushing into front spring eye.

Fig.
18—Removing Lower Pad Bracket (Chevy II)
Fig.
21—Rear Spring Shackle Exploded View-All

Except Station Wagon (Chevy II)

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