FUEL TANK AND EXHAUST SYSTEMS 8-14
CAUTION: Carefully remove unit so as not to
damage screen oh the end of the pipe,
4.
Clean screen by blowing out with compressed air.
5. Reverse procedure to install.
FUEL LINES (Fig. 17)
The gasoline lines are routed on the underside of the
underbody prop shaft tunnel off center, on the right side,
opposite the single exhaust system. The lines extend
from the fuel tank, joint the brake lines on dual clip
assemblies, and then 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 com-
system including carburetor, fuel
pump and all fuel lines and fuel tank if the
vehicle is to be stored for any appreciable
length of time. This precaution will prevent ac-
cumulation 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" di-
ameter tubing for regular installation with beaded-type
ends for connections to hoses and flared ends for secure
line connections.
FUEL TANK VENT LINE (Fig. 18)
The
gas
tanks
are
vented from
the
filler neck near
the
filler neck opening with
3/16"
tubing which extends
underneath
the
vehicle
to the
front
of the gas
tank.
IMPORTANT:
It is
important
to
note that
the
gas tank
is not
vented
at the cap;
therefore,
it
is necessary
to be
assured that
the
vent line
is
free from dirt,
etc., and
that
the gas
tank vent
line
is
open
at all
times.
At
the
filler neck
the
vent line
is
wedged into
an
open-
ing
and
secured
by a
snap-on clamp.
The
vent line
is
connected
by a
rubber hose with
two
wire clamps
at the
gas tank location
and
routed
to the gas
tank hinge strap
access hole where
the
tubing
end is
protected
by a
rubber
grommet
and a
screw
and
shield secured
in the
hole
at
the strap
end.
FWD.
SEDANS
6-PASS.
STATION WAGON
Fig. 16—Fuel Tank Gauge Sending Units and Strainers
CHEVROLET CHASSIS SERVICE MANUAL
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 8-19
Fig.
22—Spare Tire Carrier Installed
6. Remove two fuel tank retaining strap bottom nuts
from forward support member located at forward
front side of tank.
7. Remove fuel tank metering unit wires (fig. 25).
8. Remove fuel pickup line and drain tank.
9. Remove gas cap, filler neck boot from the top of tank
and disconnect drain line (fig. 24).
NOTE:6
Coupe Models—Remove filler neck.
10.
Remove fuel tank support frame attachment bolts and
support.
11.
Lower tank and rotate toward the front of vehicle.
Installation (20 Gallon Tank)
NOTE:
Place hoses and wires to one side and
position anti-squeak pads to the crossmember,
END OF HOSE FLUSH
TO Va INCH BACK FROM
EDGE OF BUMPERETTE
Fig.
24-Gas Tank Filler Neck Vent Hose
cemented to the support and attached to the tank.
Replace with new pads as required.
1.
Hook retaining straps at the rear frame crossmem-
ber. (Crimp strap ends at rear frame attachment.)
NOTE:
Make certain strap ends are hooked and
anti-squeak pads are properly positioned.
2.
Slowly rotate fuel tank into position.
CAUTION: Coupe-Install filler neck after tank
is installed.
3.
Attach fuel tank support at the frame side rails.
TANK METERING UNI
WIRE CONNECTIONS
Fig.
23—Exhaust System Tail Pipe Attachment
Fig.
25—Fuel Tank Metering Unit, Wires and Lines
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 8-27
CAMARO
INDEX
Page
General Description 8-27
Service Operations
Fuel Tank 8-28
Fuel Lines 8-28
Metering Units (Gauge Sending Unit) 8-28
GENERAL DESCRIPTION
All models use an 18.5 gallon capacity (approx.) fuel
tank mounted between the frame rails behind the rear
axle (fig. 32). All fuel tanks are vented through an anti-
surge type filler cap assembly consisting of cap and
handle. The carrying straps hook through a double slot
in the front of the rear compartment reinforcements and
attach to strap bolts positioned in slots provided at the
rear panel reinforcements. A conventional fuel meter
VIEW B
Fig.
32—Fuel Tank Assembly
CHEVROLET CHASSIS SERVICE MANUAL
FUEL TANK
AND
EXHAUST SYSTEMS
8-31
EXHAUST SYSTEMS
INDEX
Page
General Description
8-31
Component Part Replacement
8-31
Muffler Assembly
8-31
Exhaust Pipe
. 8-31
Tailpipe and/or Resonator
8-32
GENERAL DESCRIPTION
The single exhaust system
cm
six* cylinder engine
models
(fig. 36)
consists
of an
exhaust pipe, extension,
muffler
and
tailpipe with necessary attaching brackets
and clamps.
On V-8
engine models with single exhaust
assemblies
(fig. 36) an
exhaust crossover pipe
is
added
to connect
the
right exhaust manifold
to the
system.
The
dual exhaust system available
on V-8
engine models
(fig.
37) includes
two
front exhaust pipes -with
or
without
resonators,
two
rear exhaust pipes, dual inlet-outlet
muffler, tailpipes and attaching hardware.
The assemblies
are
secured
to the
engine
at the ex-
haust manifolds,
to the
rear compartment pan reinforce-
ment ahead
of
axle
and
adjacent
to the gas
tank
at the
end
of the
tailpipe.
The
assemblies
are
suspended
on
brackets with insulators
for
rattle free operation.
The muffler
is an
all-welded construction with
a
•
capacity
for
muffling
the
noise
and at the
same time,
minimizing back pressure
for
maximum engine effici-
ency.
The
internal parts
are
electric welded
to
eliminate
premature failure
or
rattle.
The exhaust system center mounting
at the
muffler
location consists
of an
underbody bracket,
an
insulator
and
a
clamp.
The
clamp holds
the
muffler and tailpipe
with
a
"U" bolt and
at
the same time secures
the
muffler
and pipe
to the
body.
The exhaust system mounting
at the
end
of
the tailpipe
secures
the
pipe
to a
bracket assembly
and
insulator
attached
to an
existing underbody bracket.
COMPONENT PART REPLACEMENT
EXHAUST PIPE
Replacement
1.
Loosen
"U"
bolt clamp
at
rear exhaust pipe
connection.
2.
Remove exhaust pipe
to
manifold attaching nuts,
ex-
tension
and.
packing then separate pipe from manifold
studs.
NOTE:
Right exhaust crossover pipe
on V-8
engine single exhaust models
is an
integral part
of
the
exhaust pipe assembly and
is not
serviced
separately.
3.
Separate front exhaust pipe from rear exhaust pipe
extension.
4.
To
install exhaust pipe, connect pipe
to
rear exhaust
pipe extension
or
resonator
and
secure
to
exhaust
manifold. Note clearances
for
the standard and auto-
matic control linkages, underbody
and
crossmember.
5. Tighten exhaust pipe
to
manifold attaching nuts
and
rear "U" bolt clamp nuts.
EXHAUST PIPE EXTENSION
Replacement
1.
Remove "U" bolt clamps
at
muffler inlet and exhaust
pipe
or
resonator connections.
2.
Disconnect exhaust pipe extension
at
muffler
and
exhaust pipe
or
resonator connection.
3.
To
install extension, connect extension
to
exhaust
pipe
or
resonator and
to
muffler.
4.
Install
"V"
bolt clamps
and
tighten clamp nuts.
MUFFLER ASSEMBLY
Replacement
1.
Remove "U" bolt clamp
at
muffler inlet.
2.
Remove tailpipe support clamp.
3.
Separate muffler from rear exhaust pipe
and
remove
muffler from vehicle.
4.
If
usable,
cut
tail pipe from muffler.
5. Connect muffler inlet
to
exhaust pipe and install
"U"
bolt clamp
at
muffler inlet.
6. Connect tailpipe
to
muffler outlet
and
install rear
support clamp.
7. Install
"U"
bolt clamp
at
tailpipe
to
muffler outlet
connection and tighten nuts.
TAILPIPE
Replacement
1.
Remove
"U"
bolt clamp
at
muffler outlet.
If
replac-
ing right tail pipe, eut pipe
at
muffler outlet.
2.
Remove tail pipe rear hanger clamp and detach pipe
from muffler.
&IS SBtVKE MANUAL
5.
6.
7.
8.
2.
Install all fender mounting screws, replacing original
shimming. Refer to removal procedure for screw
location.
3.
Install hydraulic lines at main cylinder and right
hand skirt. Install fuel line at right hand skirt.
4.
Install steering gear as outlined in Section 9. Do
not fail to perform adjustment procedure listed under
Mast Jacket - Installation.
CAMARO
INDEX
Page
General Description 20
Maintenance and Adjustments 20
Hood / . 20
Hinge 20
Bumpers ' . . . 20
Catch Assembly 21
Lock . 21
Fenders 21
Sheet Metal 22
CHASSIS SHEET METAL 11-19
Install pitman arm as outlined in Section 9 under
Maintenance and Adjustments - Steering Gear Ad-
justments.
Remove jack stands and jack.
Bleed brakes as outlined in Section 5.
Perform body alignment as outlined in Fisher Body
Service Manual.
Page
Component Part Replacement . 22
Battery Tray 22
Radiator Support 22
Fender and Skirt Assembly 22
Hood Assembly . 22
Lock and Catch Assembly 22
Trim and Insulation . . . 24
Cowl Vent Grille . . 24
Fig.
32 - Front End Sheet Metal - Camaro
1.
Fender
2.
Hood Hinge
3. Hood
4.
Cowl Vent Grille
5. Trim
6. Molding
7. Fender Extension
8. Bumper Bracket
9. Valance Pane!
10.
Header Panel
11.
Radiator Support
12.
Radiator
13.
14.
15.
Shroud
Hood Lock
Radiator Cap
16.
17.
18.
Bracket (V-8
Hood Catch
Brace
Engine
Only)
19.
20.
21.
Skirt
Seal
Battery
Tray
CHEVROLET CHASSIS SERVICE MANUAL
ELECTRICAL-BODY AND CHASSIS 12-76
20 OR
•431 INST. COMPT. LAMP&SW.
14 B
«3@H}U
EMM RADIO CONN.
HEATER SW.
-12 PPL
CLOCK
CLOCK LAMPS
HEATER CONT. LP.
20 GY
14LBL
14 BRN
14 Y
14 o:
14
OR
20 OR
20 B
12 R BAT.
12 P
12 P IGN.
12 PPL SOL.
12BRNAC
20 GY
GY
20 GY
14 OR
12 BRN
12 R
12 R
14 BRN-*
12 BRN—
20 DG
TRAFFIC HAZARD SW.
666SSSB
20DBL
20LBL
20 T
HORN
CONTACT
16B/W
20 LG
18 P
12 R
18 GY/DBL/B
20 B
14
OR
14 LBL
16 B
20
W
12 R
^
18
LBL
14 LBL
20 PP
18 OR
20 BRN
16
DG
IGNTTION SWITCH
GROUND
IGNITION LAMP
INST. LAMP
RADIO CAPACITOR CONN.
TEMP. GAGE
INST. LAMP
INST. LAMP
H. DIR. SIG. LAMP
INST. LAMP
CIGARETTE
SI
"MW LIGHTER & LAMP
INST. LAMP
CLUSTER GROUND
LAMP TELL-TALX LAMP
HI-BEAM LAMP
INST. LAMP
PARK ALARM LAMP
INST. LAMP
W/S WIPER
SWITCH
AMMETER
H. DIR. SIG. LAMP
INST. LAMP
FUEL GAGE
LIGHT SWITCH
-20 P
Fig.
119 - Instrument Panel & Cluster ~ Corvette
CHEVROLET CHASSIS SERVICE MANUAL