STEERING 9-29
column mounting bracket, and place bracket in cor-
rect position on underside of instrument panel.
Loosely install bracket using bracket to column
mounting screws and bracket to instrument panel
washers and bolts.
NOTE: Steering shaft to gear clamp must be
tightened before column attaching bolts are
torqued. Refer to "Steering Gear-Chevy n",
installation procedure, for correct Chevy II
steering column alignment procedure.
5.
Camaro only (fig. 60):
Lay wedge shim in position on instrument panel
column mounting bracket and place bracket in cor-
rect position on underside of instrument panel.
Loosely install bracket using bracket to column
mounting screws, nuts, and washer and bolt as shown
in Figure 60.
6. Corvette only (fig. 61):
Loosely secure column mounting bracket to sup-
port plate and instrument panel with washers and
bolts.
7.
Secure flanged end of column to steering coupling
with lockwashers and nuts. On Chevy n, connect col-
umn to steering gear with clamp, clamp bolt, and
nut. On Corvette, slide steering shaft flange into
lower coupling
half,
and install upper clamp bolt
loosely; also secure support, seal and clamp loosely
at dash on engine side.
8. Tighten instrument panel mounting bracket bolts and
nuts.
Refer to torque specifications at rear of manual
for correct torque values.
9. Chevrolet only (fig. 15):
Place upper and lower mast jacket covers in po-
sition and secure covers together and to instrument
panel using nuts and screws as shown in Figure 15.
10.
Chevy H only (fig. 18):
Place lower mast jacket cover in position under
mast jacket and secure to upper cover with screws.
11.
CheveUe only (fig. 15):
Place mast jacket trim cover in position over col-
Fig.
61—Instrument Panel Mounting Bracket and
Support Plqte—Corvette
umn on underside of instrument panel and secure
with screws.
12.
Corvette only (fig. 14):
Slide escutcheon into position at instrument panel
and secure with screws. Place upper end lower
covers in position and secure with screws.
13.
On Chevrolet and CheveUe models with column
mounted powerglide controls, secure transmission
shift indicator pointer into position with set screw
(fig. 15). ,
14.
Chevrolet only (fig. 19):
a. Secure seal and cover to dash panel with screws.
b.
Place clamp assembly in position and install
clamp screw.
c. Install dash panel trim cover with mounting
screws.
15.
Chevelle only (fig. 20):
a. Secure seal and inner and outer covers to dash
panel with screws.
b.
Secure inner and outer covers together with
screws.
c. Install trim cover to dash panel with two
retainers.
16.
Chevy H only (fig. 21):
a. Secure seal, retainer, and clamp to dash panel
with screws.
b.
Install clamp screw.
c. Slide collar into position. Pinch and staple upper
tabs together.
17.
Camaro only (fig. 22):
a. Secure seal, upper cover, and lower cover to
dash panel with screws.
b.
Secure upper and lower cover together with
screws.
c. Fold rubber boot over securely against dash panel
to conceal covers.
18.
Corvette only (fig. 23):
a. Secure seal and support assembly to dash panel
on engine compartment side.
b.
Tighten clamp, washer, and clamp bolt on engine
compartment side.
19.
Connect transmission linkage to lower shift tube
levers in engine compartment, if column is so
equipped. Adjust levers as outlined in Section 7.
20.
Install steering wheel as outlined in this section.
21.
Connect directional signal, horn, back-up lamp, and
neutral start switch at wiring harness plugs. Adjust
back-up lamp, neutral start switch as outlined in
Section 12.
22.
Adjust steering gear and align and center steering
wheel as outlined in this section.
STEERING LINKAGE (Fig. 62)
TIE RODS
There are two tie rod assemblies used on all models.
Each assembly is of three piece construction, consisting
of a sleeve and two tie rod ends. The ends are threaded
into the sleeve and locked with clamps. Right and left
hand threads are provided to facilitate toe-in adjustment
and steering gear centering.
The tie rod ends are self-adjusting for wear and re-
quire no attention in service other than periodic lubrica-
tion and occasional inspection to see that ball studs are
tight. Replacement of tie rod ends should be made when
CHEVROLET CHASSIS SERVICE MANUAL
STEERING
9-32
arm on frame and install mounting bolts, washers
and nuts. No washer is used on Corvette.
Install relay rod to idler arm, ^making certain seal
is on stud. Install and tighten nut.
Install cotter pin.
Refer to torque specifications at rear of manual for'
correct torque values.
Chevy II (Fig. 62}
Removal
1.
Remove cotter pin, nut and washer securing idler
arm to relay rod.
2.
Remove relay rod from idler arm.
3.
If equipped with power steering disconnect power
cylinder shaft from idler arm bracket.
4.
Remove three idler bracket to frame bolts and nuts
and remove bracket and idler arm assembly.
5.
Remove cotter pin, nut, washer and bolt securing the
idler arm to the bracket.
6. Press out the idler arm bushing for replacement.
Installation
NOTE: Installation must be done with front
wheels straight ahead or the car will lead to one
side.
1.
Install idler arm bushing, if previously removed.
NOTE: Make certain the outer sleeve of the
bushing does not protrude above surface of idler
arm.
2.
Reverse removal procedure and torque all nuts ac-
cording to specifications.
PITMAN ARM
Removal
1.
Remove cotter pin from pitman arm ball stud and
remove nut.
2.
Remove relay rod from pitman arm by tapping on
side of rod or arm in which the stud mounts with a
hammer while using a heavy hammer or similar tool
as a backing. Pull down on relay rod to remove
from stud.
3.
Remove pitman arm nut from sector shaft and mark
relation of arm position to shaft.
4.
Remove pitman arm with Tool J-6632 as shown in
Figure 2.
Installation
1.
Install pitman arm on sector shaft, lining up the
• marks made upon removal.
2.
Install sector shaft nut.
3.
Position relay rod on to pitman arm. Install nut.
Continue to tighten arm enough to align castellation
with hole in stud and install cotter pin.
STEERING ARM
If, through collision or other damage, it becomes nec-
essary to remove and replace either steering arm, pro-
ceed as follows:
Removal
1.
Remove tie rod from steering arm as outlined in this
section.
2.
Remove front wheel, hub and brake drum as a unit
by removing hub cap and dust cap, cotter pin from
spindle nut and the spindle nut. Pull assembly to-
ward outside of vehicle. If removal is difficult, it
may be necessary to back off brake adjustment to
increase brake shoe-to-drum clearance; see Hy-
draulic Brake Adjustment, Section 5. On models
with disc brakes, remove caliper and disc.
3.
With wheel and drum assembly or caliper and disc
removed, steering arm retaining bolt heads are ac-
cessible and removal of steering arm from vehicle
may be accomplished by removing retaining nuts.
Installation
1.
Place steering arm in position on vehicle and install
retaining bolts*
2.
Install nuts. Use only the special locknut listed for
this use in the Chevrolet Parts Catalog.
3.
Pack wheel bearings using a high quality wheel
bearing lubricant. Install bearings and wheel-hub-
brake drum assembly removed previously. On disc
brake models, install disc and caliper.
4.
Install keyed washer and spindle nut. Proceed as out-
lined under t{ Front Wheel Bearing Adjustment" in
Section 3.
5.
Install tie rod ball stud in steering arm. Be sure that
the dust cover is in place on ball stud.
6. Install castellated nut on ball stud, tighten securely
and install cotter pin.
7.
Following directions given in Section 3 to check cor-
nering wheel relationship and toe-in; correct as
required.
STEERING DAMPER-CORVETTE
Removal
1.
Remove bolt from damper pivot bracket at relay rod.
2.
Remove nut from damper pivot at frame bracket and
withdraw damper assembly.
Damper is serviced as a unit. Replace damper if
3.
damaged or excessively worn.
Installation
1.
Place piston rod end into frame bracket and install
retainers, bushings, and nut.
2.
Insert cylinder end pivot into relay rod bracket and
install through bolt.
CHEVROLET CHASSIS SERVICE MANUAL
STEERING 9-34
Fig.
64-Over Center Adjustment
transmission fluid "Type A" bearing the mark
"AQ-ATF" followed by a number and the suffix
letter "A".
ADJUSTMENTS
POWER STEERING GEAR
Chevrolet, Chevelle, and Camaro
The over-center adjustment (fig. 64) is the only power
steering gear adjustment which can be made on the car.
However, in order to make this adjustment, it is also
necessary to check the combined ball and thrust bearing
preload.
If the vehicle is equipped with a tilt column it will be
necessary to disconnect the steering coupling to obtain a
torque reading of the column. This torque should then be
subtracted from any reading taken on the gear.
1.
Disconnect the pitman arm from the relay rod.
2.
Loosen the pitman shaft adjusting screw loeknut and
thread the adjusting screw out to the limit of its
travel through the side cover. '. •
3.
Disconnect steering column harness at chassis wir-
ing connector plug.
4.
Remove horn button.
5.
Turn the steering wheel through its full travel, then
locate the wheel at its center of travel.
6. Gheck the combined ball and thrust bearing preload
with an inch-pound torque wrench on the steering
shaft nut by rotating through the center of travel
(approximately 1/4 turn in each direction). Note the
highest reading.
7.
Tighten the pitman shaft adjusting screw and check
torque at steering shaft nut until over center preload
and total steering gear preload falls within speci-
fications. Refer to torque specifications at rear of
manual for correct torque values.
8. Install horn button. Connect steering column harness
at wiring connector plug.
Chevy II and Corvette
The steering gear used with power steering is adjusted
in the same manner as the manual steering gear.
PUMP BELT TENSION
1.
Loosen nut on pivot bolt and pump brace adjusting
nut.
CAUTION: Do not move pump by prying against
reservoir or by pulling on filler neck.
2.
Move pump, with belt in place until belt is tensioned
to specifications as indicated by Tool J-7316 (Fig-.
65).
3.
Tighten pump brace adjusting nut. Then tighten pivot
bolt nut.
HYDRAULIC SYSTEM CHECKS
The following procedure outlines methods to identify
and isolate power steering hydraulic circuit difficulties.
This test is divided into two parts. Test number one
provides means of determining whether power steering
system hydraulic parts are actually faulty. If test number
one results in readings indicating faulty hydraulic opera-
tion, test number two will identify the faulty part. Be-
fore performing hydraulic circuit test, carefully check
belt tension and condition of driving pulley. Strand
tension of belt should be 125 lbs. on new belts and 75 lbs.
on old belts, as indicated by Tool J-7316 (Fig. 65).
Test Number One—Oil Circuit Open
Engine must be at normal operating temperature. In-
flate front, tires to correct pressure. All tests are made
with engine idling, so adjust engine idle speed to correct
specifications listed in Section 6 and proceed as follows:
a. With engine not running, disconnect flexible pres-
sure line from pump and install Tool J-5176 as
Fig.
65— Checking Belt Tension with Tool J-7316
CHEVROLET CHASSIS SERVICE MANUAL
STEERING 9-36
Fig.
68—Power Steering Gear—Chevrolet Shown
Installation
1.
Install pump pulley.
CAUTION: Do not hammer on pump shaft. Use
pulley nut to pull pulley on to shaft.
2.
Position pump assembly on vehicle (Fig. 67) and in-
stall attaching parts loosely.
3.
Connect and tighten hose fittings.
4.
Fill reservoir. Bleed pump by turning pulley back-
ward (counterclockwise as viewed from front) until
air bubbles cease to appear.
5. Install pump belt over pulley.
6. Tension belt as outlined under "Pump Belt Tension
Adjustment" in this section.
7. Bleed as outlined under "Maintenance and
Adjustments."
POWER STEERING GEAR (Fig. 68)
Chevrolet,
Chevelfe,
and Comoro
Replacement procedures for the power steering gear
are the same as for the manual type steering gear.
•
Refer
to steering gear procedures near the beginning of this
section under "Component Replacement and Repairs".
In addition, disconnect pressure and return hoses from
the steering gear housing. Cap both hoses and steering
gear outlets to prevent foreign material from entering
the system. After service is performed and steering gear
is installed, connect the pressure and return hoses to
the steering gear housing. Bleed system as outlined
under Maintenance and Adjustment in this section. Refer
to torque specifications at rear of manual for correct
torque values.
CONTROL VALVE AND ADAPTER ASSEMBLY
Chevy II and Corvette
Ball Stud Seal Replacement (Fig. 69)
A ball stud seal is used on the power steering control
valve. To replace the seal:
1.
Remove the pitman arm as outlined under "Steering
Linkage" in this section.
2.
Remove clamp by removing nut, bolt and spacer or,
if crimped type clamp is used, straighten clamp end
and pull clamp and seal off end of stud.
3.
Install new seal and clamp over stud so lips on seal
mate with clamp. (A nut and bolt attachment type
clamp replaces the crimped type for service.)
CHEVROLET CHASSIS
SERVICE
MANUAL
STEERING 9-40
SPECIAL TOOLS
1.
J-22572 Steering Column Bearing
Installer
2.
J-8937 Power Piston Ball Seat
Installer
3. J-6632 Pitman Arm Puller
4.
J-5178 Pull Gauge
5. J-2927 Steering Wheel Puller
6. J-21486 Actuator Cover Remover
7. J-6585 Slide Hammer
8. J-22599 Lock Nut Wrench
9. J-21854 Pivot Pin Remover
Fig.
72—Special Tools
10.
J-22549 Shift Tube Installer
11.
J-22551 Shift Tube Remover
12.
J-5421 Thermometer
13.
J-22635 Locking Shoe Guide Pin
and Release Lever Pin
Remover and Installer
14.
J-7754 Inch Pound Torque
Wrench
15.
J-22569 Snap Ring Remover and
Installer
16.
J-2185'3
17.
J-22568
18.
J-22670
19.
J-22686
20.
J-8433
21.
J-21239
22.
J-22573
23.
J-7316
24.
J-5176
Actuator Cover Installer
Spanner Wrench
Pump Main Shaft Seal
Installer
End Play Gauge
Pump Pulley Remover
Pump Pulley Remover
Column Support Fixture
Belt Tension Gauge
Pressure Gauge
CHEVROLET CHASSIS SERVICE MANUAL
WHEELS AND TIRES 10-4
the road and it slips, grinding off the tread on the inside
half of the tire at an excessive rate. This type of tire
shows much the same appearance of tread wear as tire
wear caused by negative camber.
Second, the transfer of weight may also over-load the
outside tires so much that they are laterally distorted
resulting in excessive wear on the outside half of the
tire producing a type of wear like that caused by ex-
cessive positive camber.
Cornering wear can be most easily distinguished from
abnormal camber wear by the rounding of the outside
shoulder or edge of the tire and by the roughening of the
tread surface which denotes abrasion.
Cornering wear often produces a fin or raised portion
along the inside edge of each row in the tread pattern.
In some cases this fin is almost as pronounced as a
toe-in fin, and in others, it tapers into a row of tread
blocks to such an extent that the tire has a definite step
wear appearance.
The only remedy for cornering wear is proper in-
struction of owners.
Fig.
5 - Tire Rotatidh
Rotation
To minimize the possibility of tire noise and to equal-
ize tire wear, it is recommended that tires be inter-
changed every 6000 miles as shown in Figure 5 or more
frequently in the case of extremely heavy wear.
NOTE:
Rotate Corvette tires at 4000 miles or
sooner.
Interchanging tires will effectively prevent undue wear
on any particular tire. II tire interchanging is followed
as recommended above, all tires will have the same
number of miles in each wheel position at the end of the
fourth change. When interchanging tires, inspect for
signs of abnormal wear, bulging, etc., stones, glass, and
nails should be removed before reinstallation.
Noise
Noise caused by the normal action of tire treads on
various road surfaces is often confused with rear axle
gears or other noises in the car.
The determination of whether tires are causing the
noise complained of is relatively simple. The car should
be driven at various speeds and note taken of part
throttle, and sudden acceleration and deceleration. Axle
and exhaust noises show definite variations under these
conditions, while tire noise will remain constant. Tire
noise is, however, most pronounced at speeds of approx-
imately twenty or thirty miles per hour.
The tires may be further checked by driving the ear
over smooth pavement with the tires at normal pressure
and again over the same stretch of pavement when the
tires have been inflated to fifty pounds pressure. Reduce
the tires to normal pressure one at a time to determine
the faulty tire or tires. This high inflation pressure
should immediately be reduced to normal after test. If
the noise for which the test is being made is caused by
tires,.
it will noticeably decrease when the tire pressure
is increased, whereas axle noise should show no change
in volume.
If, on inspection, the tires on the front wheels are
found to be creating most of the noise the alignment of
the front wheels should be checked. Excessive tire noise
usually results from lower than recommended tire pres-
sure, incorrect alignment, uneven tire wear, or defective
(thumper) tire.
Cleaning
A great deal of ordinary road dirt which collects on
white sidewall tires may be sponged off with clear water
or a mild soap solution.
A good brand of whitewall tire cleaner, however, is
a quicker and more effective cleaner for removing dirt
and stains from whitewall tires and in many cases it
will remove stains and discoloration that the simpler
method of soap and water will not remove.
Under no circumstances should gasoline, kerosene or
any cleaning fluid containing a solvent derived from oil
be used to clean whitewall tires. Oil in any form is
detrimental to tire rubber and a cleaner with an oil base
will discolor or injure whitewall tires.
Change (W/Wheels)
To change the road wheels using the jack that comes
with the car, observe the following procedure:
1.
Set hand brake and block front wheels if rear wheel
is being changed.
2.
Remove hub cap or wheel disc and break wheel
mounting nuts loose.
3.
Place the jack as directed tinder, General Informa-
tion,
Section 0 and raise car until wheel clears
ground.
4.
Remove wheel mounting nuts and remove wheel from
hub or drum.
5. To replace road wheel, reverse the above instrue-
. tions. Proper torque on nuts is 55-75 ft. lbs.
torque (70-85 ft. lbs. for Corvette aluminum wheel
nuts).
CAUTION: On models equipped with discs, in-
dex the pilot hole in the disc on the valve stem.
(To insure that the anti-rotation notches in wheel
disc register on lugs in wheel rim.)
CHEVROLET CHASSIS SERVICE MANUAL
CHASSIS SHEET METAL 11-4
FENDERS
Fenders are adjustable with shims at the cowl and
rocker panel. To add or remove shims, loosen bolts at
shim locations (fig. 7) and carefully apply force with pry
bar to provide clearance for shim removal or installa-
tion.
SHEET METAL ADJUSTMENTS
For proper operation of doors and hood, and for pre-
sentable appearance, adjust front sheet metal to the tol-
erances shown in Figures
4-
and 5.
COMPONENT PART REPLACEMENT
NOTE: When replacing sheet metal compo-
nents on Chevrolet or Chevelle, note position and
attachment of all seals and dust shielding and
replace as necessary.
BATTERY TRAY
Removal
1.
Disconnect battery cables.
2.
Remove screw retaining battery hold down clamp and
remove battery from vehicle.
3.
Remove screws retaining battery tray to fender skirt
and radiator support.
4.
On Chevrolet, remove headlamp bezel and remove
screw retaining tray to radiator support.
5.
Remove battery tray from vehicle.
Installation
Reverse removal procedure.
RADIATOR SUPPORT
Removal
1.
Remove front bumper (Section 14).
Fig.
3 - Hood Hinge - Chevrolet
2.
Remove grille and related components (Section 13).
3.
Remove battery tray as outlined above.
4.
Remove all electrical connections from radiator
support.
5.
Remove windshield washer bottle from bracket on
radiator support.
6. Remove shroud and radiator (Section 13).
7.
Remove screws and bolts securing support to skirts,
fenders, and frame horns (figs. 8 and 9).
8.. Spread fenders apart enough to allow support move-
ment and remove support from front of vehicle.
Installation
1.
Position the radiator support in vehicle", aligning
mounting screw and bolt holes with drift punch.
2.
install screws and bolts loosely until all are started.
3.
Replace all parts removed following removal proce-
dure in reverse order.
4.
Refer to torque specifications in rear of manual for
correct torque values.
•
5.
Aim headlamps as outlined in Section 12.
FENDER ASSEMBLY
Removal
1.
Remove hood with hinges from vehicle as outlined in
this section.
2.
On Chevrolet models, remove headlamp bezels and
headlamps; on Chevelle models, remove grille ex-
tension panels (fig. 1 or 2 as applicable).
3.
Disconnect wiring harness clips from fender to be
removed.
4.
If applicable, remove horn assembly from fender.
5.
If applicable, remove radio antenna.
6. Remove fender brace (fig. 1 or 2 as applicable).
7.
Remove screws retaining fender to radiator support,
skirt, cowl, filler panel, tie bar, and rocker panel.
Note number and location of shims removed from
locations shown in Figure 7.
8. Remove fender from vehicle.
Installation
Refer to disassembly procedure for location of screws
and install screws loosely. Install the shimmed screws
at rocker panel and cowl and adjust fender (figs. 4 and 5)
before tightening other screws. Always start adjustment
with original amount of shims, then add or remove shims
as required.
FENDER SKIRT
Removal
CAUTION: Chevelle air conditioned models
have condenser hoses routed through the right
front fender skirt. Cut skirt and bend as neces-
sary to move hoses clear of skirt. If necessary,
refer to Section 1A for air conditioning compo-
nents and procedures.
CHEVROLET CHASSIS SERVICE MANUAL
CHASSIS SHEET METAL 11-5
GRILLE TO BE FLUSH
TO +.06 TO W/SHIELD
MOLDING
±.06 GRILLE TO FENDER
.06 -.05 FENDER TO
W/SHIELD MOLDING
GRILLE"
& FENDER; ~ ~
FLUSH ± .06
FENDER FLUSH TO .06 INBOARD
OF DOOR SURFACE. FULL LENGTH
OF VERTICAL OPENING.
12±.O6 HOOD
TO GRILLE
.12 -.04
TO FENDER
FLUSH ± .06
HOOD TO GRILLE
FLUSH ± .06
HOOD TO FENDER
.12/.17 (REF.)
AT RAD. SUPPORT
.18 ± .06 FENDER
TO DOOR
FLUSH ± .06
HOOD TO FENDER
09 zfc .06 FENDER
TO ROCKER
.75 (REF.) AT
TOP FLANGE
1.08 EXC. WAG
URFACE
TYPICAL ON SURFACE
FLUSH CONDITION
DESIRED
.75 REF.
Fig.
4
- Sheet Metal Adjustments - Chevrolet
1.
Remove fender as outlined above.
2.
Jack up front end of vehicle and remove wjheel.
3.
Remove all wires, hoses, cruise control, etc. at-
tached to skirt; also remove bolt attaching battery
tray bracket to skirt. Remove battery, j
Remove battery tray from vehicle. \
5.
On Chevrolet, remove screws securing bj:ace (fig. 1)
to skirt and dash panel and remove brace.;
Remove skirt attaching screws and remove skirt
from vehicle.. !
4.
6.
Installation
j
Install skirt and fender following the removal proce-
dure in reverse order. Refer to torque specifications in
rear of manual for correct torque values. !
FENDER TRIM
On Chevelle, to gain access to spear molding and em-
blem retaining nuts, remove skirt to fender flange screws
top center rearward and pry skirt forward several inches.
Wedge skirt in this position with a wood block and re-
move nuts from inside fender retaining molding to fender.
Emblem attaching hardware is accessible from inside
engine compartment. t
On Chevrolet, open front door and rear inside door
hinge pillar for access to trim retaining nuts. Remain-
ing trim retaining nuts, and emblem retaining nuts are
accessible from inside engine compartment.
CHEVROLET CHASSIS SERVICE MANUAL