1967 CHEVROLET CAMARO lock

FUEL TANK
AND
EXHAUST SYSTEMS
8-18

CORVETTE

FUEL TANK

INDEX

Page

General Description.
. 8-18

Service Operations
8-18

Fuel Tank
8-18

Gauge Sending Unit
8-20

Fuel Lines.
8-20

GENERAL DESCRIPTION

20 GALLON TANK

Fig.
21
—Corvette Fuel Tanks

The Corvette
is
equipped with
a
standard
20
gallon

(approx.) tank
or an RPO 36
gallon (approx.) fiberglass

tank
(fig. 21). The
tanks
are
installed
at the
very rear

of
the
vehicle, convenient
for
direct fuel filling into
the

tank.
The
tanks
are
held
in
place
by
two metal straps
at-

tached individually
to a
removable
gas
tank frame
sup-

port.
Two
guides
at the end of
the straps
are
adjustable

for securing
the
straps onto
the
tank support. The tank

support
is
secured
to the
frame rail with flat washers,

lockwashers, bolts
and
nuts.
The
tanks' rest
on six
felt

anti-squeak pads.
One pad
centers
on the
rear frame

crossmember
and one at
each side
on the
same cross-

member.
At the
same rear location two pads
are
placed

on
the
tank
at the
metal support strap (rear) attachment
location
and
another anti-squeak
pad
cemented
on the

support
at
the front
of
the tank.

The fuel tanks
are
equipped with
a gas
gauge metering

unit,
a
fuel pickup, fuel strainer
and
vent line.
If it be-

comes necessary,
the
tank
can be
completely drained
by

removing
the
fuel pickup hose which
is
located
at
the
bot-

tom
of the
tank,
or
by removing the metering
for
quicker

draining.

A pressure vacuum type, positive vented design
cap,

conforming
to
I.C.C. regulations,
is
used on both regular

production
and
optional fuel tanks.
The cap is
inter-

changeable with past model tanks
for
service replace-

ment purposes.

SERVICE OPERATIONS

FUEL TANK

CAUTION:
IF THE GAS
TANK SHOULD
BE

REMOVED
AND
INSTALLED, CARE SHOULD

BE EXERCISED
TO
AVOID PUNCTURING,

DROPPING
OR
DENTING
THE GAS
TANK.

Removal
(20
Gallon Tank)

WARNING: FIRST REMOVE BATTERY

CABLE.
1.
Remove
the
spare tire from tire carrier.

2.
Remove spare tire carrier bolted attachments
and

carrier
(fig. 22).

3.
Remove
the "U"
bolt attachments
at
both rear tail

pipe
(See
Figure
23).

4.
Separate
the
exhaust system
at
the transmission sup-

port crossmember
by
loosening
the "U"
bolt nuts.

5. Remove both rear muffler brackets from
the
frame

and slide
the
muffler system rearward.

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-20

4.
Attach the retaining straps with strap guide attached

to the fuel tank support, and secure with-the nut and

lockwasher assembly.

5. Connect the filler neck boot to the drain hose of the

tank and install boot around filler neck,

6. Connect the fuel pickup line, ground wire and make

certain that the fuel drain line is flush to 1/2" in-

board of the rear bumper opening.

7. Attach tank metering unit wires (fig. 25).

8. Replace fuel in tank. Replace gas cap.

9. Check for possible leaks.

10.
Reconnect the exhaust system by reversing the above

removal procedures (see "Exhaust System").

11.
Install spare tire carrier by securing the bolt

attachment.

12.
Install the spare tire in the tire carrier.

Removal (36 Gallon Tank)

1.
Remove cover (fig. 26).

2.
Disconnect hoses and drain tank and remove two

fittings at bottom of tank.

3.
Disconnect fuel and vent lines and wires at tank

(fig. 27).

4.
Remove straps.

installation (36 Gallon Tank)

Reverse removal procedure to install.

FUEL TANK METERING UNIT OR GAUGE

SENDING UNIT AND STRAINER

The fuel tank metering unit is located at the bottom of

the fuel tank. The fuel strainer is attached at the end of

the sending unit inside the tank.

Replacement (20 Gallon Tank)

1.
Follow fuel tank removal procedure through Step 2.

2.
Drain the tank. Disconnect the attaching wires.

3.
Remove metering unit with a fuel tank gauge unit

Spanner J-8950 (revised).

4.
'Remove metering unit and gasket.

CAUTION: Carefully remove unit so as not to

damage screen on the end of the pipe.

5. Clean strainer screen by blowing out with com-

pressed air.

6. Reverse procedure to install.

Replacement (36 Gallon Tank)

1.
Remove cover.

2.
Follow Steps 2 thru 6 as outlined under replacement

for 20 gallon tank.

FUEL LINES

20 Gallon Tank

The fuel lines are conveniently located along the out-

side of the right frame rail (fig. 28). The lines extend
Fig.
26—Gasoline Tank (36 Gallon) Compartment Cover

from the fuel tank pickup at the bottom of the tank, along

the rear frame crossmember to the right frame rail,

extending through the rail at the kickup area and along the

top inside edge of the frame to the fuel pump, Flexible

hoses are located at the fuel tank pickup and at the fuel

pump.

36 Gallon Tank

The 36 gallon tank fuel lines are routed from the bot-

tom of both sides of the tank to the right frame rail

(fig. 20).

Maintenance

CAUTION: Always drain gasoline from the

complete fuel system including carburetor, fuel

pump and all fuel lines and fuel tank if the vehi-

cle is to be stored for any great length of time.

This precaution will prevent accumulation~ol

gum formation and resultant poor engine

performance.

. The fuel lines should occasionally be inspected for

leaks,
kinks or dents, especially when work has been

done on the underside of car or after the car has been

traveling over rough or stone roads at higher speeds.

If evidence of dirt is found in the carburetor or fuel pump

at disassembly, the lines should be disconnected and

blown put. Check the fuel tank strainer for damage or

omission.

Fuel lines are beaded-type ends for connection to

hoses and flared ends for secure metal-to-metal line

connections.

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-28

assembly is mounted on top of the tank and cannot be

removed for service without lowering the tank. The

upper filler neck assembly is routed through an opening

in the rear panel above the bumper and through the trunk

floor pan (fig. 33). The filler neck is not centered in the

rear panel but offset to the right to obtain the proper fill

rate.

The fuel pickup pipe is an integral part of the tank

meter unit^ located at the top front center of the tank. A

fine mesh screen is located at the bottom end of the fuel

pickup pipe to prevent the entrance of foreign material

into the fuel system.

Fig.
33—Filler Neck Assembly

COMPONENT PART REPLACEMENT

FUEL TANK

Draining Tank

Refer to Chevrolet page 8-2.

Removal and Installation

1.
Drain fuel tank. .'...' .

2.
Raise vehicle.

3.
Disconnect fuel pickup line, gauge wire and ground

lead from tank unit.

4.
Loosen filler neck inlet hose clamp.

5. Remove tank support strap bolts and straps, then

lower tank carefully.

6. Reverse procedure to install.

FUEL TANK GAUGE SENDING UNIT (Fig. 34)

Replacement

1.
Remove fuel tank.

2.
Remove cam lock using special Tool J-8950.

3.
Remove meter unit and rubber gasket.

CAUTION: Carefully remove unit so as not to

damage screen on end of pipe.

4.
Clean screen by blowing out with compressed air.

5. Reverse removal procedure to install.
FUEL LINES (Fig. 35)

The gasoline lines extending from fuel tank to fuel

pump,
are routed on the underside of the underbody, on

the right side, opposite the single exhaust system. The

lines extend from the fuel tank to the right side of the

engine to the fuel pump and over the front of the engine

to the carburetor.

Maintenance

CAUTION:

plete fuel
Always drain gasoline from corn-

including carburetor, fuel

pump and
fuel lines and fuel tank if the

vehicle is to be stored for any
eciable

length of time. This precaution will prevent

accumulation of gum formation and resultant

poor engine performance.

The fuel lines should occasionally be inspected for

leaks,
kinks, or dents. If evidence of dirt is found in the

carburetor or fuel pump disassembly, the lines should be

disconnected and blown out. Check the fuel tank strainer

for damage or omission. Fuel lines are of 5/16" diameter

tubing for regular installation with beaded-type ends for

connections to hoses and flared ends for secure line

connections.

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-2

Fig.
1—Cover
Attaching Bolts—Chevy li Shown

ADJUSTMENTS

STEERING
GEAR

Before any adjustments are made to the steering gear

in an attempt to correct such conditions as shimmy,

loose or hard steering etc., a careful check should be

made of front end alignment, shock absorbers, wheel

balance and tire pressure for possible cause.

Correct adjustment of the steering gear is very im-

portant. Perform adjustments following the sequence

listed below,

1.
Remove pitman arm nut and mark relation of pitman

arm position to sector shaft. Remove pitman arm

with Tool J- 6632 as shown in Figure 2.

2.
Loosen the pitman shaft lash adjuster screw locknut

and turn the adjuster screw a few turns in a counter-

clockwise direction (fig. 3). This removes the load
Fig. 2—Removing Pitman Arm

imposed on the worm bearings by the close meshing

of rack and sector teeth. Turn steering wheel gently

in one direction until stopped by gear, then back away

about one turn.

CAUTION: Do not turn steering wheel hard

against stops when steering relay rod is discon-

nected as damage to ball guides may result.

3.
All except Corvette and telescopic columns:

a. Disconnect steering column harness at chassis

wiring connector plug.

b.
Remove horn cap or ornament and using an inch

pound torque wrench and socket on steering wheel

nut, measure torque required to keep the wheel

in motion.

LASH ADJUSTER

SCREW

LOCK NUT

WORM BEARING

ADJUSTER
\

WORM

ADJUSTER

Fig.
3—Steering Gear Adjustment Points

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-3

Fig.
4-Checking Wheel PuI!-Corvette

c. If torque does not lie within limits given in speci-

fications at rear of manual, adjustment is

necessary.

4.
Corvette and telescopic columns:

a. Use Tool J-5178 to measure.pull at rim of wheel

required to keep wheel in motion (fig. 4).

b.
If pull does not lie within limits given in specifi-

cations in rear of manual, adjustment of worm

bearings is necessary.

NOTE:
If vehicle is equipped with a tilt steer-

ing column, it will be necessary to disconnect

the steering coupling to obtain a torque reading

of the steering column. This torque should then

be subtracted from any reading taken on the

gear.

5. To adjust worm bearings, loosen worm bearing ad-

juster locknut and turn worm bearing adjuster shown

in Figure 3 until there is no perceptible end play in

worm. Check pull at steering wheel, readjusting: if

necessary to obtain proper pull. Tighten locknut and

recheck pull. If the gear feels "lumpy" after adjust-

ment of worm bearings, there is probably damage in

the bearings due to severe impact or to improper

adjustment and the gear must be disassembled for

replacement of damaged parts.

6. After proper adjustment of worm is obtained and all

mounting bolts securely tightened, adjust lash ad-

juster screw. First turn the steering wheel gently

from one stop all the way to the other, carefully

counting the total number of turns. Then turn wheel

back exactly half way, to center position. Turn lash

adjuster screw clockwise to take out all lash in gear

teeth, and tighten locknut. Check pull at steering

wheel taking highest reading as wheel is turned

through center position. See specifications in rear of

manual for proper sector lash adjustment. Readjust

if necessary to obtain proper pull.
NOT MORE THAN

T/a INCH FROM

CENTERLINE

Fig.
5—Steering Wheel Alignment

NOTE:
If maximum specification is exceeded,

turn las£ adjuster screw counterclockwise, then

come up on adjustment by turning the adjuster in

a clockwise motion.

7. Tighten locknut then recheck pull, as it must lie be-

tween specified readings.

Fig.
6—Adjusting Steering Ratio—Corvette

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-4

8. Reassemble pitman arm to sector shaft, lining up

marks made during disassembly. Refer to torque

specifications at rear of manual for correct torque

value.

9. Install horn cap or ornament and connect steering

column harness at chassis connector.

NOTE:
Chevy.n models are equipped with a

shim at the frame to steering gear mounting

bolts.
Shims may be removed or installed as

required for proper steering gear alignment.

STEERING WHEEL ALIGNMENT AND

HIGH POINT CENTERING

1.
Set front wheels in straight ahead position. This can

be checked by driving vehicle a short distance on a

flat surface to determine steering wheel position at

which vehicle follows a straight path.

2.
With front wheels set straight ahead, check position

of mark on wormshaft designating steering gear high

point. This mark should be at the top side of the shaft

at 12 o'clock position and lined up with the mark in

the coupling lower clamp.

3.
If gear has been moved off high point when setting

wheels in straight ahead position, loosen adjusting

sleeve clamps on both left and right hand tie rods,

then turn both sleeves an equal number of turns in

the same direction to bring gear back on high point.

CAUTION: Turning the sleeves an unequal
number of turns or in differential directions will

disturb the toe-in setting of the wheels.

4.
Readjust toe-in as outlined in Section 3 (if necessary).

5. With wheels in a straight ahead position and the

steering gear on highpoint, check the steering wheel

alignment by measuring the distance from each hori-

zontal spoke to the horizontal centerline of the

steering wheel (fig. 5). If the horizontal spokes are

over 1-1/8 inches from the horizontal position the

wheel should be removed and centered. (See steering

wheel removal in this section.)

TOE-IN ADJUSTMENT

Adjust the steering linkage for proper toe-in setting as

outlined in Section 3.

CORVETTE STEERING RATIO (Fig. 6)

The Corvette steering ratio may be changed as follows:

CAUTION: Do not use the rearward hole in the

steering arm with power steering equipment or

interference may result.

1.
Remove tie rod ball stud nut at steering arm and

disconnect tie rod from steering arm.

2.
Move tie rod end to forward hole for 17.6:1 ratio

(fast ratio) or rear hole for 20.2:1 ratio (standard

ratio).

3.
Install tie rod stud nut and tighten securely. Repeat

operation on opposite steering arm.

COMPONENT REPLACEMENT AND REPAIRS

STEERING WHEEL

REGULAR PRODUCTION (Fig. 7)

Removal

1.
Disconnect steering column harness from chassis

wiring harness at connector (fig. 8).

2.
Pull out horn button cap or center ornament and

retainer.

3.
Remove three screws from the receiving cup.

4.
Remove the receiving cup, belleville spring, bushing,

and pivot ring.

5. Remove the steering wheel nut and washer.

6. Using Tool J-2927, install centering adapter on

steering shaft, thread puller anchor screws into

threaded holes provided in steering wheel. Turn

center bolt of tool clockwise to remove steering

wheel (fig. 9).

Installation

CAUTION: Direction signal control assembly

must be in "neutral position when assembling

steering wheel to prevent damage to cancelling

cam and control assembly.

1.
With directional cancelling cam and horn contact as-

sembly in place, set wheel onto steering shaft.
Fig. 7—-Regular Wheel and Horn Attachments

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-5

Fig.
8—Steering Column Wiring Connector

Secure with washer and nut. Refer to torque speci-

fications at rear of manual for correct torque values.

Install belleville spring (with dish of spring up), pivot

ring, bushing and receiving cup with screws.

Install retainer and horn button cap or center

ornament.

Connect steering column harness to chassis wiring

connector.

Fig.
9—Removing Steering Wheel with J-2927
Fig.
10—Simulated Wood Steering Wheel and Attaching Parts

SIMULATED WOOD (Fig. 10)

Removal

1.
Disconnect steering column harness from chassis

wiring harness at connector.

2.
Remove horn cap assembly by pulling up.

3.
Remove contact assembly attaching screws and re-

move contact assembly.

NOTE:
If steering wheel only is to be replaced,

perform step 4. If directional signal cancelling

cam is to be replaced, omit step 4 and proceed

with steps 5 and 6.

4.
Remove remaining screws from steering wheel and

remove wheel from hub assembly.

5. Remove steering wheel nut and washer.

6. Using Tool J-2927, install centering adapter on

steering shaft, thread puller anchor screws into

threaded holes provided in hub assembly. Turn

center bolt of tool clockwise to remove hub

assembly.

Installation

CAUTION: Directional signal control assembly

must be in neutral position when assembling hub

assembly to prevent damage to cancelling cam

and control assembly.

1.
With directional cancelling cam and horn contact in

place, install hub assembly on steering shaft. Secure

with washer and nut. Refer to torque specifications

at rear of manual for correct torque value.

2.
Attach steering wheel to hub assembly using the six

attaching screws and tighten securely.

3.
Place horn contact on steering wheel and attach with

three screws. Tighten securely.

4.
Snap horn button in place.

5. Connect steering column harness to chassis wiring

connector.

CORVETTE TELESCOPING (Fig. 11)

Removal

1.
Disconnect steering column harness at wiring

connector.

2.
Pry off horn button cap.

3.
Remove three screws securing horn contact to spacer

and hub.

4.
Remove two screws securing lock screw to lock

knob,
and remove lock screw, lock knob, and spacer.

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-6

Fig.
11
—Corvette Telescoping Wheel Option

5.

7.
NOTE:
If steering wheel only is to be replaced,

perform Step 5 below only. If directional signal

cancelling cam is to be replaced, omit Step 5

and proceed with Steps 6 and 7.

Remove six screws securing steering wheel to hub

and remove wheel.

Remove nut and washer from shaft and using steering

wheel puller Tool J-2927, remove steering wheel and

hub from vehicle.

Slide cancelling cam and spring off shaft.

Installation

NOTE:
Refer to torque specifications at rear of

manual for correct torque values.

1.
If necessary, slide cancelling cam and spring on end

of shaft.

2.
If hub was removed from steering wheel, attach hub

to steering wheel with screws removed during dis-

assembly.

3.
Place steering wheel and hub assembly in position

and secure to column with washer and nut.

4.
Position spacer on steering wheel.
5. Position lock knob on steering wheel.

6. Install lock screw through lock knob, turn into shaft,

and adjust to lock position.

7. Attach spacer to wheel with three screws.

8. Place lock knob in lock position and attach to lock

screw with two screws.

9. Remove three screws holding spacer. Attach horn

contact to spacer and steering wheel with three

screws.

10.
Install horn button cap.

11.
Connect steering column harness at chassis plug.

STEERING COUPLING (Fig. 12)

Removal

NOTE:
Chevy n models are equipped with a

clamp arrangement rather than the conventional

"rag joint" steering coupling. Refer to Steering

Gear - Chevy II, for service procedures.

1.
Remove nuts and washers securing steering coupling

to flanged end of steering column (fig. 12).

2.
Remove coupling clamp bolt (fig. 12) and slightly

spread coupling clamp.

CHEVROLET CHASSIS SERVICE MANUAL