LUBRICATION
0-21
6
3-SPEED
4-SPEED
AUTOMATIC
10
LUBRICATE EVERY 6,000 MILES GL -Multi-purpose
or
Universal Gear Lubrincant*
-(V LUBRICATE EVERY 12,000 MILES WB-Wheel Bearing Lubricant
V/^ (Whenever Brakes
are
serviced)
AT —Automatic Transmission Fluid (Type)
BF -Brake Fluid
a
LUBRICATE EVERY 36,000 MILES
* Refill Positraction Rear Axle with
Special Lubricant Only.
CL -Chassis Lubricant
EO—Engine
Oil
Fig.
36—Lubrication Diagram—Corvette
1.
Front Suspension
2.
Steering Linkage
3. Steering Gear
4.
Air
Cleaner
5. Front Wheel
Bearings
6. Transmission
7. Rear Axle
8.
Oil
Filter
9. Battery
10.
Parking Brake
11.
Brake Master Cylinder
BODY LUBRICATION POINTS (CORVETTE)
Lubricate the following items when possible.
Hood Latch Mechanism and Hinges --Apply light engine oil
to pivot points. Don't oil lock pins or catch plates.
i
Rear Compartment Lid Release and Hinges --Apply light
engine
oil.
Side Door Hinge Pins—Apply light engine oil.
Door Lock Rotor and Striker Plate—Apply light engine oil or
stainless stick lubricant.
Lock Cylinders—Lubricate with powdered graphite.
Window Regulators and Controls and Door Lock Remote
Link —Apply light engine
oil.
Gas Tank Filler Cap Hinge—Apply light engine oil.
Weatherstrips and Rubber Bumpers —Coat lightly with
a
rubber lubricant.
CHEVROLET CHASSIS SERVICE MANUAL
SECTION
IB
CORVETTE BODY
INDEX
Page
General Description . . * • •.
•
^"i1
Maintenance and Replacements 1B-1
Front End 1B-1
Adjustments IBri
Hood 1B-1
Hood Catch 1B-2
Hood Assembly . 1B-2
Front Emblems 1B-2
Vent Grilles 1B-2
Instrument Panel Tray . 1B-2
Cowl Area Trim
....................
1B-4
Rear View Mirror 1B-4
Outside 1B-4
Inside . 1B-4
Sun Visor . 1B-4
Cowl Ventilator Assembly 1B-4
Windshield ; 1B-5
Doors 1B-7
Adjustments 1B-7
Door Lock Striker 1B-7
Door Window and Vent 1B-7
Door Hinges 1B-7
Trim Panel and Inside Handles IB-11
Weatherstrip 1B-11
Door Ventilator Assembly 1B-12
19437 Model 1B-12
19467 Model 1B-13
Window Glass 1B-13
Glass Run Channel—Upper 1B-14
Window Outer Seal Assembly 1B-14
Window Inner Seal Assembly 1B-14
Glass Run Channel—Rear 1B-15
Window Regulator—Manual 1B-15
Window Regulator—Power 1B-15
Door Lock and Remote Controls 1B-16
Outer Handle . 1B-16
Lock Cylinder 1B-17
Hinges—Door Assembly . 1B-17
Rear Quarter .. . 1B-19
Door Sill and Molding . . 1B-19
Rear End . . r 1B-19
Folding Top Compartment Lid 1B-19
Adjustments . . 1B-19
1B-19
Page
Lock 1B-19
Control 1B-19
Rear Window—19437 Model 1B-21
Gas Tank Door and Rear Trim Plate.,. . . . . . . . 1B-23
Rear Filler Panel 1B-23
Spare Tire Mount 1B-23
Rugs and Interior Trim 1B-25
Cleaning Soft Trim 1B-25
Carpets and Covers—All Models 1B-26
Rear Body Trim , . 1B-26
Soft Covers 1B-26
Rigid Plastic Trim 1B-26
Garnish Moldings Plus-Headliner-19437 Model . . 1B-27
Seats 1B-27
Body Mounting 1B-27
Body Repairs . 1B-27
General Instructions . . . 1B-27
Repair Panels. 1B-28
Precautions 1B-29
Plastic Solder Kit 1B-29
Resin Kit 1B-30
Specific Repairs 1B-32
Scratched Panels-Spot Refinishing 1B-32
Dents in Panels-Surface Cracks !B-33
Cracked Panels . . 1B-35
Fractures 1B-37
Panel Replacement 1B-39
Hard Top . . 1B-41
Care and Storage 1B-41
Rear Window 1B-41
Garnish Moldings and Latches 1B-42
Headlining 1B-43
Weatherstrips and Drip Molding 1B-43
Vinyl Covering . 1B-43
Folding Top 1B-46
Care of Folding Top 1B-46
Care of Rear Window 1B-46
Adjustments 1B-48
Top Assembly, Removal and Installation 1B-49
Top Trim and Rear Window Assembly 1B-50
Frame and Linkage 1B-52
Weatherstrip 1B-52
Adding Hardtop 1B-52
Special Tools 1B-53
GENERAL DESCRIPTION
.
A
structural network
of
steel forms the backbone
of
the
Corvette body. When combined with
the
fiber-glass
re-
inforced plastic body panels,
the
steel-plastic marriage
results
in a
body with increased torsional rigidity
and
greater beaming strength.
Convertible models continue with two roof styles:
the
folding
top
and the removable hardtop. In operation, both
tops function similar to those
of
previous models. Either
top
is
standard and both
are
optional
as
determined by
the top selected
as
base equipment.
MAINTENANCE
&
REPLACEMENTS
FRONT
END
ADJUSTMENTS
(Refer to Figure
2)
Adjustments should
be
made
in
order
-
hood position
first, then catch adjustments.
Hood
The position
of the
hood
in
relation
to
the hood body
opening and the fender surfaces
is
controlled by the posi-
tion
of the
hinges and position
and
adjustment
of
catch
and bumpers.
The fore
and aft
position
of the
hood may be adjusted
CHEVROLET CHASSIS SERVICE MANUAL
CORVETTE BODY 1B-11
CLAYOfc
CAULKING
COMPOUND
Fig. 26-Window Rear Stop - Typical
Fig. 24—Checking Adjustment of Striker
3.
Adjust door as required. Location of hinge retaining
bolts may be seen in Figure 25 at "A". Do not allow
doors to hang on one hinge without support.
4.
Install trim pad and lubricate door "hold opens" and
hinges with Lubriplate or its equivalent.
NOTE:
After performing any door adjustment,
the window and door post should be checked for
alignment and adjusted as necessary. In addi-
tion,
never slam the door after adjustment with-
out first checking the door lock and striker plate
engagement. An adjustment may be necessary.
TRIM PANEL, AND INSIDE HANDLES
Figure 29 is an exploded view of integral arm rest,
inside handles, and trim panel fastenings.
Removal of trim panel may be accomplished as
follows:
1.
Remove two screws under arm rest.
2.
Using Tool J-7797, remove clips retaining window
crank and lock remote control as shown in Figure 28.
3.
Remove knob from door lock control by turning
counter-clockwise.
4.
Remove 2 screws retaining inside pull handle.
5. Remove sheet metal screws and special washers
retaining trim panel to door assembly.
6. Pull trim panel out. at bottom, tap bottom edge of
trim panel with hand to disengage from top of door.
Remove trim panel from vehicle.
WEATHERSTRIP
Figure
30
illustrates both 19437 and 19467 model door
COWL
Fig.
25-Door Adjustment Points
Fig.
27-Door Hinge
CHEVROLET CHASSIS SERVICE MANUAL
CORVETTE
BODY
1B-16
1.
Ventilator Assembly
2.
Ventilator Assembly Mounting
Screw
3.
Window Drive
Pin
Retaining Screw
4.
Regulator Mounting Screw
Fig.
34-Model 19467 Ventilator Assembly
5. Regulator
6. Ventilator Assembly Mounting
Nut - Upper
7. Ventilator Assembly Mounting
Stud - Upper
8. Ventilator Assembly Mounting
Stud - Lower
9. Ventilator Assembly Mounting
Nut -
•
Lower
DOOR LOCK AND REMOTE CONTROLS
For parts identification refer to Figure 46.
Removal
1.
Roll door window fully up.
2.
Remove door trim panel as outlined in this section.
3.
Remove two screws holding door lock remote con-
trol assembly and disengage control from lock re-
mote control rod.
4.
Remove cover from larger access hole in door inner
panel.
5. Remove two screws retaining remote locking control
assembly and disengage control from remote control
locking rod.
6. Remove 4 screws retaining lock assembly, disengage
control rods and remove lock from door pocket.
Installation
To install lock and controls follow removal assembly
in reverse order. All components should be lubricated
before installation.
OUTER HANDLE
For parts identification refer to Figure 47.
Removal
1.
Remove door trim panel as outlined in this section.
Remove larger access hole cover.
2.
Roll door window fully up.
3.
Working through access hole, remove 2 door handle
retaining screws.
4.
Remove handle from door outer surface. Retrieve
reinforcement from inside door pocket. Discard old
Installation
1.
Install new gaskets and position door handle on door
outer panel.
2.
Position reinforcement on door inner panel and in-
stall handle retaining screws.
3.
Carefully check operation of door lock.
4.
Install door trim panel as outlined in this section.
CHEVROLET CHASSIS SERVICE MANUAL
CORVETTE BODY 1B-21
Fig.
45—
Locking Regulator Arm in Place
REAR WINDOW-ADHESIVE CAULKED-
19437 MODEL
For parts identification refer to Figure 55.
1.
Remove the 2 rear window garnish moldings by re-
moving the 14 attaching screws.
2.
Pry molding caps from reveal moldings.
3.
Carefully remove lower, side, and top reveal mold-
ings after marking their position on body with tape.
4.
Secure one end of steel music wire to piece of wood
for handle. Insert other end through caulking mater-
ial at lower corner of rear window; then secure end
of wire to another piece of wood (fig. 56).
5. With the aid of helper, carefully cut through caulking
material (using a sawing motion) with the steel wire;
up side of window, across top, down opposite side,
and across bottom of window.
6. Remove old glass from window opening.
7. Using a sharp scraper or wood chisel, remove ad-
hesive caulking material from body pinchweld flange.
NOTE:
It is not necessary to clean off all the
old caulking material completely from body
opening; however, there should not be any loose
pieces of caulking material left in the opening.
8. Check all reveal molding retaining clips for damage
(24 required). Replace those that are bent or dis-
torted with clips provided in kit.
9. Using weatherstrip adhesive, cement rubber spacers
at bottom, sides, and top of window opening. The
step-type spacers are used at bottom and sides, the
flat type are used at the top, sides, and bottom of
window opening as shown on Figure 55.
10.
Using suction cup holders, position replacement
glass in body opening. Carefully check relationship
of glass to body pinchweld completely around open-
ing. The overlap of glass to body pinchweld and re-
taining flanges should be equal with a minimum over-
lap of 3/16M. Where necessary, position shims under
the lower spacers to obtain required overlap of glass
to body upper and lower flanges.
11.
After proper glass to pinchweld relationship has
been attained, mark position with grease pencil on
glass and body as shown in Figure 57.
12.
Remove glass from body opening and place on pro-
tected surface.
13.
Clean inside edge surface of glass so that glass is
free of any foreign material (oil, grease, etc.).
Using 3/4" masking tape, place tape approximately
1/2 inch from edge of inside surface of glass com-
pletely around glass. Then apply a film of silane
primer to inside edge surface completely around
glass,
also apply silane primer to sealing surface
of pinchweld as shown in Figure 58.
Fig.
46—Door Lock and Remote Controls
1.
Door Lock Remote Control
Assembly
2.
Door Lock Remote Control Knob
3. Door Lock Remote Control Rod
4.
Remote Control Locking Rod
5. Remote Locking Control
Assembly
6. Lock Assembly
CHEVROLET CHASSIS SERVICE MANUAL
SECTION 6
ENGINE
CONTENTS
OF
THIS SECTION
Page
Engine Tune Up
6-1
Torque Sequence
Engine Mechanical
(In
Line)
6-12
Special Tools
. .
Engine Mechanical (V8)
6-24
Page
6-39
6-40
ENGINE TUNE UP
INDEX
Page
General Description
. 6-1
Mechanical Checks and Adjustments
6-1
Spark Plug Removal
6-1
Test Compression
6-1
Service and Install Spark Plugs
6-2
Service Ignition System
6-3
Service Battery
and
Battery Cables
6-5
Service Delcotron
and
Regulator
6-5
Service
Fan
Belt
6-5
Service Manifold Heat Valve
6-5
Tighten Manifold
6-5
Service Fuel Lines
and
Fuel Filter ..........
6-6
Service Cooling System
6-6
Check and Adjust Accelerator Linkage
6-6
Service Crankcase Ventilation
6-6
Service
Air
Injection Reactor System
6-6
Choke Adjustment
6-7
Page
Instrument Cheek-Out
6-7
Instrument Hook-Up.
. 6*7
Check and Adjust Dwell
6-7
Check Dwell Variation
6-7
Check and Adjust Timing
6-8
Adjust Idle Speed
and
Mixture
6-8
Additional Checks and Adjustments
. 6-8
Testing Crankcase Ventilation Valve
. 6-8
Testing Cranking Voltage
6-8
Cylinder Balance Test
. 6-8
Battery
6-8
Ignition
; 6-8
Carburetor
6-11
Fuel Pump
6-11
Cooling System
. 6-11
Cylinder Head Torque and Valve Adjustment
..... 6-11
GENERAL DESCRIPTION
The engine tune up
is
important
to the
modern automo-
tive engine with
its
vastly improved power and perform-
ance.
The
higher compression ratios, improved electri-
cal systems
and
other advances
in
design, make today1 s
engines more sensitive
and
have
a
decided effect
on
power, performance and fuel consumption.
It
is
seldom advisable
to
attempt
a
tune up
by
correc-
tion
of one or two
items only. Time will normally
be
saved
and
more lasting results assured
if the
technician
will follow
a
definite
and
thorough procedure
of
analysis
and correction
of all
items affecting power, performance
and economy.
The tune
up
will
be
performed
in
two parts.
The
first
part will consist
of
visual and mechanical checks and
ad-
justments;
the
second part will consist
of
an instrument
checkout that
can be
performed with
any one of the
units
of service equipment available
for
this purpose. Always
follow
the
instructions provided
by the
manufacturer
of
the particular equipment
to be
used.
Additional checks
and
adjustments
are
included
in the
latter part
of
this section
for use as
required. Many
of
these operations
can be
used
to
isolate and correct trou-
ble located during
the
tune up. Where conditions
are
UB-
covered requiring major corrective action, refer
to the
appropriate section
of
this manual
or the
Passenger
Chassis Overhaul Manual
for
detailed service informa-
tion.
Typical illustrations
and
procedures
are
used except
where specific illustrations
or
procedures
are
necessary
to clarify
the
operation. Illustrations showing bench
op-
erations
are
used
for
clarification however
all
operations
can
be
performed
on the
vehicle.
MECHANICAL CHECKS
AND
ADJUSTMENTS
Spark Plug Removal
Remove any foreign matter from around spark plugs
by
blowing
out
with compressed
air,
then disconnect wires
and remove plugs.
Test Compression
(Fig. 1)
The compression check
is
important because
an
engine
with
low or
uneven compression cannot
be
tuned success-
fully.
It is
essential that improper compression
be cor-
rected before proceeding with
the
engine tune
up.
1.
Remove
air
cleaner
and
block throttle
and
choke
in
wide open position.
2.
Hook
up
starter remote control cable
and
insert
compression gauge firmly
in
spark plug port.
CAUTION: Whenever
the
engine
is
cranked
CHEVROLET
C*
IS SERVICE MANUAL
STEERING
9-33
POWER STEERING
INDEX
Page
General Description
. 9-33
Maintenance
and
Adjustments
9-33
Bleeding Hydraulic System
9-33
Fluid Level
. 9-33
Adjustments
. 9-34
Power Steering Gear
. . 9-34
Pump Belt Tension
9-34
Hydraulic System Checks
9-34
Component Replacement
and
Repairs
. 9-35
Power Steering Pump.
. 9-35
Power Steering Gear
9-36
Control Valve
and
Adapter Assembly
9.35
Power Cylinder
9.37
Power Steering Hoses
9.39
GENERAL DESCRIPTION
Two types
of
power steering
are
used
for 1967.
One
is
the conventional linkage type
for
Chevy
n and
Corvette
vehicles
and the
other
is the
integral gear type
for
Chevrolet, Chevelle,
and
Camaro.
For
both types
the
hydraulic pressure
is
provided
by an
engine-driven vane-
type pump.
On
the
Chevy
n and
Corvette linkage type power steer-
ing, hydraulic pressure
is
delivered through
a
hose from
the pump
to a
valve which senses
the
requirement
for
power assistance
and
supplies
the
power cylinder
ac-
cordingly.
The
steering gear used with this power steer-
ing
is the
same basic unit used
on
manually steered
vehicles;
it is
serviced
as
outlined
in the
manual steering
part
of
this section except
for
adjustment, which
is
covered
in the
following pages.
The
steering linkage also
is serviced the same
as
manual counterparts.
The Chevrolet, Chevelle
and
Camaro integral gear type
power steering
has the
hydraulic pressure delivered
from
the
pump through two hoses
to the
steering gear.
In
the power steering gear
the
steering shaft, hydraulic
valve, worm, and rack-piston
nut are all in
line making
a
compact
and
space saving assembly.
All oil
passages
are
internal within
the
gear except
the
pressure
and
return
hoses.
The steering gear
is a
recirculating ball system
in
which steel balls
act as a
rolling thread between
the
steering worm
and
rack-piston
nut. The
rack-piston
nut
is
all one
piece
and is
geared
to the
sector
of
the piston
shaft.
The
valve
is
contained
in the
gear housing elimi-
nating
the
need
of
bolts
or
seals
to
attach
a
separate
valve housing.
The valve
is an
open-center, rotary-type three
way
valve.
The
spool
is
held
in
neutral position by means
of a
torsion
bar. The
spool
is
attached
by
means
of
the stub
shaft
to one end of the
torsion
bar
and
to the
valve body
on
the
other
end.
Twisting
of the
torsion bar allows
the
spool
to
move
in
relation
to the
valve body thereby oper-
ating
the
valve.
MAINTENANCE
AND
ADJUSTMENTS
BLEEDING HYDRAULIC SYSTEM
1.
Fill
oil
reservoir
to
proper level and
let oil
remain
undistrubed
for at
least two minutes.
2.
Start engine
and run
only
for
about
two
seconds.
3.
Add
oil if
necessary.
4.
Repeat above procedure until
oil
level remains
con-
stant after running engine.
5. Raise front
end of
vehicle
so
that wheels
are off
the
ground.
6. Increase engine speed
to
approximately
1500 rpm.
7. Turn
the
wheels
(off
ground) right
and
left, lightly
contacting
the
wheel stops.
8. Add
oil if
necessary.
9. Lower
the car and
turn wheels right and left
on the
ground.
10.
Check
oil
level and refill
as
required.
11.
If oil is
extremely foamy, allow vehicle
to
stand
a
few minutes with engine
off and
repeat above
procedure.
,
a.
Check belt tightness
and
check
for a
bent
or
loose
pulley. (Pulley should
not
wobble with engine
running.)
b.
Check
to
make sure hoses
are not
touching
any
other parts
of the car,
particularly sheet metal.
c. Check
oil
level, filling
to
proper level
if
neces-
sary, following operations
1
through
10.
This
step
and
Step
"D" are
extremely important
as
low
oil
level and/or
air in the oil are the
most
frequent causes
of
objectionable pump noise.
d. Check
the
presence
of air in the oil. If air is
present, attempt
to
bleed system
as
described
in
operations
1
through
10. If it
becomes obvious
that
the
pump will
not
bleed after
a few
trials,
proceed
as
outlined under Hydraulic System
Checks.
FLUID
LEVEL
1.
Check
oil
level
in the
reservoir
by
checking
the dip
stick when
oil is at
operating temperature.
On
Chevelle models equipped with remote reservoir,
the reservoir should
be
maintained approximately
3/4 full when
oil is at
operating temperature.
2.
Fill,
if
necessary,
to
proper level with
GM
Power
Steering Fluid
or, if
this
is not
available, automatic
CHEVROLET CHASSIS SERVICE MANUAL
ELECTRICAL-BODY AND CHASSIS 12-35
SERVICE OPERATIONS
INSTRUMENT CLUSTER
REMOVAL AND INSTALLATION (Fig. 49)
1.
Remove mast jacket assembly. Refer to Section 9
for removal procedures.
2.
Disconnect tachometer drive cable at distributor.
3.
Disconnect the headlamp panel control switch from
instrument cluster.
4.
Remove lighting switch as outlined in this section.
10 10-A 1112 13
14
15 16 17 18 19
Fig.
49- Instrument Cluster Connections
1.
Cluster Illuminating
Bulbs
2.
Direction Signal Indicator
Bulb L.H.
3. Direction Signal Indicator
BulbR.H.
4.
Headlamp Actuating Motor
Indicator
5. Headlamp Hi Beam
Indicator
6. Parking Brake Alarm
Indicator
7. Ground Lead Attaching
Point
8. Temperature Indicator
"1"
Terminal
9.
10.
10A.
11.
12.
13.
14.
]5.
16.
17.
18.
19.
20.
21.
Temperature Indicator "S"
Terminal
Ignition Switch Receptacle
ignition Switch Illuminating
Bulb
Oil Pressure Indicator
Tachometer
Lighter Receptacle
Trip Odometer
Wiper Switch Receptacle
Speedometer
Ammeter "Gen" Terminal
Ammeter "Battery" Terminal
Lighting Switch Receptacle
Fuel Gauge
"1"
Terminal
Fuel Gauge "S" Terminal
5. Remove the ignition switch. Refer to Section 6Y
for removal procedure. Then disconnect ignition
switch lamp support at instrument panel.
6. Disconnect oil pressure line at oil pressure gauge
then remove the lead wires from ammeter, wiper
switch and cigarette lighter. Disconnect trip odom-
eter at mast jacket support.
7. Remove the instrument cluster-to-dash retaining
screws and pull cluster assembly slightly forward
to obtain clearance for removal of speedometer
cable, tachometer cable, cluster ground wire, fuel
gauge lead wires and remaining indicator and cluster
illuminating lamps.
8. To install cluster in dash panel, reverse removal
procedure.
FUEL GAUGE
The gasoline fuel gauge circuit consists of an electri-
cal indicator in the instrument cluster and a float-
controlled rheostat in the fuel tank.
Since the fuel gauge consists of two remotely located
units and connecting wires, it is sometimes difficult to
determine which unit is at fault when the gauge fails to
operate properly. Cluster removal is necessary to re-
place the fuel gauge.
NOTE:
Be sure to check gas gauge fuse in fuse
panel before attempting to trouble shoot for
inoperative gauge or tank sending unit.
SPEEDOMETER AND/OR TACHOMETER
Removal and Installation
Cluster must be removed from vehicle to service
speedometer head assembly (see Cluster Removal pro-
cedure)
.
With cluster removed from vehicle:
1.
Remove five screws securing cluster back panel to
cluster assembly; separate the parts carefully.
CAUTION: Care must be used to avoid marring
instrument cluster face.
2.
Remove two screws securing speedometer or ta-
chometer head to cluster back panel; carefully re-
move speedometer or tachometer head.
NOTE:
Servicing of speedometer or tachom-
eter head should be performed by an authorized
AC service station.
3.
Reverse above procedure to install speedometer.
Cable Replacement or Lubrication
1.
Disconnect the. cable from the speedometer or ta-
chometer head. Remove the old cable by pulling it
out from speedometer end of conduit.
NOTE:
If old cable is broken it may be nec-
essary to remove lower piece from transmission
or distributor end of conduit as applicable.
2.
Lubricate the lower 3/4 of cable with
AC
speedom-
eter cable lubricant and push the cable into the con-
duit. Connect the upper end to the speedometer or
tachometer head and road test vehicle for proper
operation.
TEMPERATURE GAUGE
The temperature indicator requires very little service
other than testing for malfunctioning and replacing de-
fective units. Cluster must be removed to service tem-
perature gauge.
Do not attempt to repair either the engine unit or the
gauge. When installing new engine unit, do not use
thread compound on unit threads, as this will increase
electrical resistance of unit and cause faulty reading
on gauge.
AMMETER OR OIL PRESSURE GAUGE
The ammeter or oil pressure gauge requires very
little attention other than keeping ammeter terminals
clean and tight. If the oil pressure control line should
become restricted it should be blown out or replaced.
Cluster must be removed to service these gauges.
HftVKI MANUAL