engine CHEVROLET CAMARO 1967 1.G Chassis Manual PDF
[x] Cancel search | Manufacturer: CHEVROLET, Model Year: 1967, Model line: CAMARO, Model: CHEVROLET CAMARO 1967 1.GPages: 659, PDF Size: 114.24 MB
Page 275 of 659
ENGINE 6-10
Fig.
15 - Crank case Ventilation Valve
a. If voltage is 9 volts or more and cranking speed
is satisfactory, the battery, starter, cables,
starter switch and ignition circuit to coil (by-
passing resistance wire) are in good condition.
b.
If below 9 volts, check circuit until difficulty is
located.
Meter reading below specification—Weak bat-
tery; defective cables, connections, switch or
starter; defective ignition circuit to coil.
Cranking speed below normal--Excessive re-
sistance in cables or starting motor; excessive
mechanical drag in engine.
Uneven cranking speed—Uneven compression,
defective starter or starter drive.
Ignition Switch
With voltmeter connected as described for the Cranking
Voltage Test, turn ignition switch to ON. Voltage should
drop to 5 to 7 volts as current is now passing through
high resistance wire connected between ignition switch
and (+) positive terminal of coil. If battery voltage of
12 volts is obtained, the starter solenoid is by-passing
the high resistance wire connected between ignition
switch and (+) positive terminal of coil, thus the starter
solenoid is not functioning properly to bypass the ignition
resistance wire or the ignition circuit is incorrectly
wired.
Distributor Resistance
Use equipment as directed by manufacturer.
Excessive
(t n ti ft
Fig.
16 - Cylinder Balance Test
Fig.
17 - Testing Cranking Voltage
resistance in primary circuit must be eliminated before
continuing with test procedure.
Secondary Resistance
Use equipment as dire6ted by manufacturer.
• Uniform "normal readings" as specified by manu-
facturer indicate all secondary circuit components
are in good condition.
• If all readings are "below normal," check for cor-
roded coil tower terminal, poorly connected or
broken coil wire, center cap electrode or rotor tip
burned, or an open secondary in coil.
• If readings are "higher than normal" at two or more
plugs adjacent in firing order, cross firing is oc-
curring in distributor cap or between spark plug ca-
bles concerned.
• If meter reads off scale to left, the coil polarity is
reversed. Check for reversed coil primary wires,
wrong coil or reversed vehicle battery connections.
Ignition Output and Secondary Leakage
Use equipment as directed by manufacturer.
• GOOD readings indicate both ignition output and
secondary insulation are good.
• If all readings are BAD or if ignition test calibrator
cannot be adjusted to Set Line, check for high re-
sistance in primary circuit, defective distributor
points, coil or condenser.
e If readings are BAD when certain plug wires are
lifted off, check for cracks or carbon tracks in dis-
tributor cap or defective insulation on those plug
wires being lifted off.
CHEVROLET CHASSIS SERVICE MANUAL
Page 276 of 659
ENGINE 6-11
Fig.
18 - Cooling System Pressure Test
Carburetor
Refer to Section 6M to perform adjustments such as
idle vent, float level, pump rod and secondary valve.
Fuel Pump
If the owner has complained of poor high speed per-
formance, the fuel pump may be at fault. Too low a
pump pressure or volume will cause a high speed "miss"
because of lack of fuel delievered to the carburetor,
while too high a pressure will cause carburetor flooding.
Check fuel pump as outlined in Section 6M.
Cooling System
The following test may be performed with pressure
testing equipment available commercially for this pur-
pose.
This test provides an excellent means of detecting
internal or external leaks within the cooling system.
1.
Remove radiator cap.
2.
Apply a test pressure of 3 pounds higher than the ra-
diator cap (fig. 18). i.e. 18 pounds for a 15 pound
cap.
3.
If the pressure will not hold, there is either an
internal or external leak in the system.
Cylinder Head Torque and Valve Adjustment
Retorquing the cylinder head bolts is not necessary
unless a gasket has been replaced, or a leak is suspected.
Valve lash must always be adjusted after the head has
been torqued.
Before adjusting the valve lash, it is extremely impor-
tant that the engine be thoroughly warmed up to normal-
ize the expansion of all parts. This is very important
because during the warm-up period, the valve clearances
will change considerably.
Hydraulic
1.
After the engine has been normalized, remove rocker
arm covers and gaskets.
CAUTION: Do not pry rocker arm cover loose.
Gaskets adhering to cylinder head and rocker
arm cover may be sheared by bumping end of
rocker arm cover rearward with palm of hand
or a rubber mallet.
2.
With the engine running at idle, back off valve rocker
arm nut until the valve rocker arm starts to clatter.
3.
Turn rocker arm nut down slowly until the clatter
just stops. This is the zero lash position.
4.
Turn nut down 1/4 additional turn and pause 10 sec-
onds until engine runs smoothly* Repeat additional
1/4 turns, pausing 10 seconds each time, until nut
has been turned down 1 full turn from the zero lash
position.
NOTE: This 1 turn preload adjustment must be
done slowly to allow the lifter to adjust itself to
prevent the possibility of interference, between
the inlet valve head and top of piston, which
might result in internal damage and/or bent push
rods.
Noisy lifters should be replaced.
5.
Repeat Steps 2, 3 and 4 to adjust the rest of the
valves.
6. Clean gasket surfaces on cylinder heads and rocker
arm covers with degreaser then install rocker arm
covers, using new gaskets, and torque bolts to
specifications.
Mechanical
1.
Normalize the engine.
2.
Remove rocker arm covers and gaskets.
CAUTION: Do not pry rocker arm cover loose.
Gaskets adhering to cylinder head and rocker
arm cover may be sheared by bumping end of
rocker arm cover rearward with palm of hand
or a rubber mallet.
3.
Use a socket wrench on self-locking rocker arm stud
nut and adjust as needed to obtain valve lash (see
tune up chart) measured between rocker arm and
valve stem with a leaf type feeler gauge.
4.
Stop engine, clean gasket surfaces on cylinder heads
and rocker arm covers with degreaser then install
rocker arm covers, using new gaskets, and torque
bolts to specifications.
Fig.
19
- Oil Deflector Clips Installed
CHEVROLET CHASSIS SERVICE MANUAL
Page 277 of 659
ENGINE
6-12
ENGINE
MECHANICAL
IN LINE
INDEX
Page
General Description . „ 6-12
Component Replacement and Adjustment 6-12
.Engine Assembly 6-12
Removal 6-12
Installation 6-13
Manifold Assembly 6-14
Removal . 6-14
Installation 6-14
Rocker Arm Cover . 6-14
Removal 6-14
mstallation . . . 6-14
Valve Mechanism
......
1 6-14
Removal 6-14
Installation and Adjustment . 6-14
Valve Lifters
..............
6-15
Locating Noisy Lifters
„.;....
6-15
Removal
.'.*...•
6-15
Installation . 6-15
Valve Stem Oil Seal and/or Valve Spring . 6-16
Replacement . 6-16
Cylinder Head Assembly . 6-16
Removal 6-16
Installation . 6-16
Oil Pan . » 6-17
Removal . . . ; . . 6-17
Installation
.........
. 6-17
Oil Pump . 6-18
Page
Removal . 6-18
Installation . 6-18
Oil Seal (Rear Main) . 6-19
Replacement 6-19
Crankshaft Pulley and Hub 6-19
Removal 6-19
Installation 6-19
Torsional Damper 6-19
Removal 6-19
Installation 6-19
Crankcase Front Cover . 6-20
Removal . 6-20
Installation 6-20
•
Oil Seal (Front Cover) 6-20
Replacement 6-20
Camshaft 6-21
Measuring Lobe Lift . ... .
.-.••.-.
6-21
Removal 6-21
Installation 6-22
Timing Gears
..••••.............••• 6—22
Replacement
6-22
Flywheel
6-22
Removal
* 6-22
Installation
6-22
Engine
Mounts
6-23
Replacement
(Front)
6-23
Replacement
(Rear)
. 6-23
GENERAL DESCRIPTION
The
In
Line engines
(fig. 1L)
covered
in
this section
are
the 1H3 cu. in. L4, the 194,
230
and
250
cu. in. L6,
regardless
of
which passenger vehicle they
are
used
in.
This section covers
the
removal
and
installation
of en-
gine assemblies;
the
removal, installation
and
adjustment
of some sub-assemblies
and
replacement
of
some
com-
ponents.
For
service
to all
components
and
sub-assem-
blies (after removal)
and
removal
of
some sub-assem-
blies,
refer
to
Section
6 of the
Chassis Overhaul Manual.
Because
of the
interchangeability
and
similarity
of
many engine sub-assemblies
and
engine parts, regardless
of which passenger vehicle they
are
used
in,
typical illus-
trations
and
procedures
are
used except where specific
illustrations
or
procedures
are
necessary
to
clarify
the
operation. Although illustrations showing bench opera-
tions
are
used, most single operations, when
not
part
of a
general overhaul, should
be
performed
(if
practical) with
the engine
in the
vehicle.
COMPONENT REPLACEMENT
AND
ADJUSTMENT
ENGINE ASSEMBLY
Removal
1.
Drain cooling system
and
engine
oil.
2.
Remove
air
cleaner
and
disconnect battery cables
at 7.
battery.
3.
Remove hood
as
outlined
in
Section 11.
4.
Remove radiator
and
radiator shroud
as
outlined
in
Section 13.
5.
Remove
fan
blade
and
pulley
as
outlined
in
Section
6K.
6. Disconnect wires
at:
• Starter Solenoid
8.
• Delcotron
9.
Temperature Switch
Oil Pressure Switch
Coil
Disconnect:
Accelerator linkage
at
manifold bellerank.
Exhaust pipe
at
manifold flange.
.
Fuel line (from tank)
at
fuel pump.
Vacuum line
to
power brake unit
at
manifold
(if
so equipped).
• Power steering pump lines
at
pump
end (if so
equipped).
Raise vehicle
and
place
on
jack stands.
Remove propeller shaft.
CHEVROLET CHASSIS SERVICE MANUAL
Page 278 of 659
ENGINE 6-13
Fig.
1L- In
Line Engines (Typical)
NOTE:
If plug for propeller shaft open-
ing in transmission is not available, drain
transmission.
10.
11.
12.
Disconnect:
• Shift linkage at transmission.
• Speedometer cable at transmission.
On synchromesh equipped vehicles, disconnect clutch
linkage at cross-shaft then remove cross-shaft en-
gine bracket.
Remove rocker arm cover as outlined, then attach
engine lifting adapter at the proper cylinder head
bolt locations.
13.
Remove front mount through bolts.
14.
Attach lifting device and raise engine to take weight
off front mounts, then remove rear mount bolts.
15.
Raise engine to take weight off rear mount, then
remove crossmember.
NOTE:
On Chevrolet vehicles it will be neces-
sary to remove mount from transmission before
crossmember can be removed.
NOTE:
On Camaro vehicles it will be neces-
sary to remove mount from transmission and
loosen rear frame cushion bolts before cross-
member can be removed.
16.
Remove engine-transmission assembly from vehicle
as a unit.
17.
Remove transmission (and clutch):
Synchromesh Transmission
a. Remove clutch housing cover plate screws.
b.
Remove bolts attaching the clutch housing to en-
gine block then remove transmission and clutch
housing as a unit.
NOTE:
Support the transmission, as the last
mounting bolt is removed, and as it is being
pulled away from the engine (to prevent damage
to clutch disc).
c. Remove starter and clutch housing rear cover.
d. Loosen clutch mounting bolts a turn at a time (to
prevent distortion of clutch cover) until the spring
pressure is released. Remove all bolts, clutch
disc and pressure plate assembly.
Automatic Transmission
SL.
Lower engine, secured by the hoist, and support
engine on blocks.
b.
Remove starter and converter housing underpan.
c. Remove flywheel-to-converter attaching bolts.
d. Support transmission on blocks.
e. Remove transmission-to-engine mounting bolts.
f. With the hoist attached, remove blocks from the
engine only and slowly guide the engine from the
transmission.
18.
Mount engine in stand.
Installation
1.
Attach lifting device to engine and remove engine
from engine stand.
2.
Install transmission (and clutch):
Synchromesh Transmission
a. Install the clutch on flywheel as outlined in Sec-
tion 7.
b.
Install clutch housing rear cover and starter.
c. Install transmission and clutch housing as out-
lined in Section 7.
d. Install clutch housing cover screws and tighten
securely.
Automatic Transmission
a. Position engine adjacent to the transmission and
align the converter with the flywheel.
CHEVROLET CHASSIS SERVICE MANUAL
Page 279 of 659
ENGINE 6-14
b.
Bolt transmission to engine, then raise engine and
transmission assembly and install flywheel to
converter attaching bolts.
c. Install converter
housing*
underpan and starter.
3.
Tilt and lower engine and transmission assembly into
the chassis as a unit, guiding engine to align front
mounts with frame supports.
4.
Install front mount through bolts and torque to
specifications.
5.
Raise engine enough to install rear crossmember,
then install crossmember, install rear mount, lower
engine and torque bolts to specifications.
6. Remove lifting device and lifting adapter then install
rocker arm cover as outlined.
7.
On synchromesh equipped vehicles, install clutch
cross shaft engine bracket, then adjust and connect
clutch as outlined in Section 7.
8. Connect:
• Speedometer cable.
• Shift linkage at transmission.
9; Install propeller shaft.
10.
Remove jack stands and lower vehicle.
11.
Connect:
Power steering pump lines (if disconnected).
Vacuum line to power brake unit (if disconnected).
Fuel line at fuel pump.
Exhaust pipe at manifold flange.
Accelerator linkage at manifold bellcrank.
12.
Connect wires at:
Coil
Oil pressure switch
Temperature switch
Delcotron
Starter solenoid
13.
Install pulley, fan blade and fan belt as outlined in
Section 6K.
14.
Install radiator and shroud as outlined in Section 13.
15.
Install and adjust hood as outlined in Section 11.
16.
Connect battery cables.
17.
Fill with coolant, engine oil and transmission oil,
then start engine and check for leaks.
18.
Perform necessary adjustments and install air
cleaner.
MANIFOLD ASSEMBLY
Removal
1.
Remove air cleaner.
2.
Disconnect both throttle rods at bellcrank and re-
move throttle return spring.
3.
Disconnect fuel and vacuum lines at carburetor.
Disconnect choke cable on \A engines.
4.
Disconnect crankcase ventilation hose at rocker arm
cover.
5.
Disconnect exhaust pipe at manifold flange and dis-
card packing.
6. Remove manifold attaching bolts and clamps then
remove manifold assembly and discard gaskets.
7.
Check for cracks in manifold castings.
8. If necessary to replace either intake or exhaust
manifolds, separate them by removing one bolt and
two nuts at center of assembly. Reassemble mani-
folds using a new gasket. Tighten finger tight and
torque to specifications after assembly to cylinder
head. Transfer all necessary parts.
Installation
1.
Clean gasket surfaces on cylinder head and
manifolds*
2.
Position new gasket over manifold end studs on head
and carefully install the manifold in position making
sure the gaskets are in place.
3.
Install bolts and clamps while holding manifold in
place with hand.
4.
Torque bolts to specifications.
NOTE: On L6 engines center bolt and end bolt
torque differ.
5.
Connect exhaust pipe to manifold using a new
packing.
6. Connect crankcase ventilation hose at rocker arm
cover.
7.
Connect fuel and vacuum lines at carburetor.
8. On L4 engines connect choke cable and adjust as out-
lines in Section 6M.
9. Connect throttle rods at bellcrank and install throttle
return spring.
10.
Install air cleaner, start engine, check for leaks and
adjust carburetor idle speed and mixture.
ROCKER ARM COVER
Removal
1.
Disconnect crankcase ventilation hose(s) at rocker
arm cover.
2.
Remove air cleaner.
3.
Disconnect temperature wire from rocker arm cover
clips.
4.
Remove rocker arm cover. '
CAUTION: Do Not pry rocker arm cover loose
Gaskets adhering to cylinder head and rocker
arm cover may be sheared by bumping end of
rocker arm cover rearward with palm of hand or
a rubber mallet.
Installation
1.
Clean gasket surfaces on cylinder head and rocker
arm cover with degreaser then, using anew gasket,
install rocker arm cover and torque bolts to
specifications.
2.
Connect temperature wire at rocker arm cover clips.
3.
Install air cleaner.
4.
Connect crankcase ventilation hoses.
VALVE MECHANISM
Removal
1.
Remove rocker arm cover as outlined.
2.
Remove rocker arm nuts, rocker arm
balls,
rocker
arms and push rods.
NOTE:
Place rocker arms, rocker arm balls
and push rods in a rack so they may be rein-
stalled in the same location.
Installation and Adjustment
NOTE:
Whenever new rocker arms and/or
rocker arm balls are being installed, coat bear-
ing surfaces of rocker arms and rocker arm
balls with Molykote or its equivalent.
1.
Install push rods,
socket.
Be sure push rods seat in lifter
CHEVROLET CHASSIS SERVICE MANUAL
Page 280 of 659
ENGINE 6-15
2.
Install rocker arms, rocker arm balls and rocker
arm
nuts.
\
Tighten rocker arm nuts until all lash is
eliminated. .
3.
Adjust valves when lifter is on base circle of cam-
shaft lobe as follows:
a. Mark distributor housing, with chalk, at each cyl-
inder position (plug wire) then disconnect plug
wires at spark plugs and coil and remove distri-
butor cap and plug wire assembly (if not previ-
ously done).
b.
Crank engine until distributor rotor points to
number one cylinder position and breaker points
are open. Both valves on number one cylinder
may now be adjusted.
c. Back out adjusting nut until lash is felt at the push
rod then turn in adjusting nut until all lash is re-
moved. This can be determined by checking push
rod side play while turning adjusting nut (fig. 2L).
When play has been removed, turn adjusting nut
in one full additional turn (to center lifter
plunger).
d. Adjust the remaining valves, one cylinder at a
time,
in the same manner.
4.
Install distributor cap and spark plug wire assembly.
5.
Install rocker arm cover as outlined.
6. Adjust carburetor idle speed and mixture.
VALVE LIFTERS
Hydraulic valve lifters very seldom require attention.
The lifters are extremely simple in design readjustments
are not necessary, and servicing of the lifters requires
only that care and cleanliness be exercised in the han-
dling of parts.
Locating Noisy Lifters
Locate a noisy valve lifter by using a piece of garden
Fig.
2L - Valve Adjustment
hose approximately four feet in length. Place one end of
the hose near the end of each intake and exhaust valve
with the other end of the hose to the ear. In this manner,
the sound is localized making it easy to determine which
lifter is at fault.
Another method is to place a finger on the face of the
valve spring retainer. If the lifter is not functioning
properly, a distinct shock will be felt when the valve
returns to its seat.
The general types of valve lifter noise are as follows:
1.
Hard Rapping Noise--Usually caused by the plunger
becoming tight in the bore of the lifter body to such
an extent that the return spring can no longer push
the plunger back up to working position. Probable
causes are:
a. Excessive varnish or carbon deposit causing
abnormal stickiness.
b.
Galling or "pickup" between plunger and bore of
lifter body, usually caused by an abrasive piece
of dirt or metal wedging between plunger and
lifter body.
2.
Moderate Rapping Noise--Probable causes are:
a. Excessively high leakdown rate.
b.
Leaky check valve seat.
c. Improper adjustment.
3.
General Noise Throughout the Valve Train—This
will, in almost all cases, be a definite indication of
insufficient oil supply, or improper adjustment.
4.
Intermittent Clicking—Probable causes are:
a. A microscopic piece of dirt momentarily caught
between ball seat and check valve ball.
b.
In rare cases, the ball itself may be
out-of-
round or have a flat spot.
c. Improper adjustment.
In most cases where noise exists in one or more lifters
all lifter units should be removed, disasssmbled, cleaned
in a solvent, reassembled, and reinstalled in the engine.
If dirt, varnish, carbon, etc. is shown to exist in one unit,
it more than likely exists in all the units, thus it would
only be, a matter of time before all lifters caused trouble.
Removal
1.
Remove valve mechanism as outlined.
2.
Mark distributor housing, with chlak, at each cylin-
der position (plug wire) then disconnect plug wires at
spark plugs and coil and remove distributor cap and
plug wire assembly.
3.
Crank engine until distributor rotor points to number
one position, then disconnect distributor primary lead
at coil and remove distributor.
4.
Remove push rod covers (discard gaskets).
5.
Remove valve lifters.
NOTE: Place valve lifters in a rack so they
may be reinstalled in the same location.
Installation
1.
Install valve lifters.
NOTE:
Whenever new valve lifters are being
installed, coat foot of valve lifters with Molykote
or its equivalent.
2.
Install push rod covers, using new gaskets, and
torque bolts to specifications.
3.
Install distributor, positioning rotor to number one
cylinder position, then connect primary lead at coil.
4.
Install and adjust valve mechanism as outlined.
CHEVROLET CHASSIS SERVICE MANUAL
Page 281 of 659
ENGINE 6-16
5.
Adjust ignition timing and carburetor idle speed and
mixture.
VALVE STEM OIL SEAL AND/OR VALVE SPRING
Replacement
1.
Remove rocker arm cover as outlined.
2.
Remove spark plug, rocker arm and push rod on the
cylinder(s) to be serviced.
3.
Apply compressed air to the spark plug hole to hold
the valves in place.
NOTE: A tool to apply air to the cylinder is
available through local jobbers or may be manu-
factured. In manufacturing this Tool a AC-46N
Spark Plug or its equivalent is recommended.
This will make the Tool universal for all
Chevrolet engines. Chisel the spark plug as
shown, then drive the porcelain out of the plug
by tapping the center electrode against a hard
block. Using a 3/8" pipe tap, cut threads in the
remaining portion of the spark ^>lug and assem-
ble as shown (fig. 3L).
4.
Using Tool J-5892 to compress the valve spring, re-
move the valve locks, valve cap, valve shield and
valve spring and damper (fig. 4L).
5.
Remove the valve stem oil seal.
6. To replace, set the valve spring and damper, valve
shield and valve cap in place. The close coiled end
of the spring is installed against the cylinder head.
Compress the spring with
Too^
J-5892 and install oil
seal in the lower groove of the stem, making sure the
seal'is flat and not twisted.
NOTE: A light coat of oil on the seal will help
prevent twisting.
7.
Install the valve locks and release the compressor
tool, making sure the locks seat properly in the
upper groove of the valve stem.
NOTE: Grease may be used to hold the locks
in place while releasing the compressor tool.
8. Install spark plug, using a new gasket, and torque to
specifications.
9. Install and adjust valve mechanism as outlined.
CYLINDER HEAD ASSEMBLY
Removal
1.
Remove manifold assembly as. outlined.
2.
Remove valve mechanism as outlined.
3.
Drain cooling system (block).
4.
Remove fuel and vacuum line from retaining clip at
water outlet then disconnect wires from temperature
sending units.
5.
Disconnect upper radiator hose at water outlet hous-
ing and battery ground strap at cylinder head.
6. Remove coil (L6 engines only).
7.
Remove cylinder head bolts, cylinder head and gas-
ket. Place cylinder head on two blocks of wood to
prevent damage.
Installation
CAUTION: The gasket surfaces on both the
head and the block must be clean of any foreign
matter and free of nicks or heavy scratches.
Cylinder bolt threads in the block and threads
on the cylinder head bolt must be cleaned. (Dirt
will affect bolt torque.) Do not use gasket sealer
on composition steel asbestos gasket.
Fig. 3L -
AIF
Adapter Tool
1.
Place the gasket in position over the dowel pins with
the bead up.
2.
Carefully guide cylinder head into place over dowel
pins and gasket.
3.
Coat threads of cylinder head bolts with sealing com-
pound and install finger tight.
4.
Tighten cylinder head bolts a little at a time in the
sequence shown on the torque sequence chart until
the specified torque is reached.
5.
Install coil (if removed).
6. Connect upper radiator hose and engine ground strap.
7.
Connect temperature sending unit wires and install
fuel and vacuum lines in clip at water outlet.
8. Fill cooling system.
•
9. Install manifold assembly as outlined.
10.
Install and adjust valve mechanism as outlined.
Fig.
4L
- Compressing Valve Spring
CHEVROLET CHASSIS SERVICE MANUAL
Page 282 of 659
ENGINE 6-17
Fig.
5L
-
Engine Blocked for Pan Removal
NOTE: Do not install rocker arm cover.
11.
Start engine and allow warm up then retorque cylin-
der head
as
outlined in Step 4 and readjust valves as
outlined under Engine Tune Up.
OIL PAN
Removal
Chevrolet
and Camaro
1.
Disconnect battery positive cable.
2.
Remove through bolts from engine front mounts.
3.
Drain radiator, then disconnect upper and lower ra-
diator hoses at radiator.
4.
Remove fan blade as outlined in Section 6K.
5.
Raise vehicle then drain engine oil.
6. Disconnect and remove* starter.
7.
On
vehicles equipped with automatic transmission,
disconnect transmission cooler lines at transmission
and remove converter housing underpan.
8. Disconnect steering
rod at
idler lever then swing
steering linkage for oil pan clearance.
9. Rotate crankshaft until timing mark
on
torsional
damper is at 6:00 o'clock position.
10.
Using
a
suitable jack (and a block of wood to prevent
damaging oil pan), raise engine enough to insert 2"
x
4"
wood blocks under engine mounts (fig. 5L), then
lower engine onto blocks.
NOTE:
If
2"
x
4" wood blocks are cut 5-1/2"
long they can be used on all Chevrolet engines.
The 5-1/2" length up for in line engines and the
4"
side up for V8 engines.
11.
Remove oil pan and discard gaskets and seals.
Cfievel/e
1.
Remove enginfe from vehicle as outlined.
2.
Place engine on jack stands, one at each front mount
and one at transmission extension.
CAUTION: Leave engine lift attached
to
en-
gine.
Do not remove all weight
of
engine from
engine lift.
3.
On
vehicles equipped with automatic transmissions
remove converter housing underpan.
4.
Remove starter.
5.
Remove oil pan and discard gaskets and seals.
Chevy//
1.
Disconnect battery positive cable.
2.
Drain engine oil.
3.
Disconnect then remove starter.
4.
Disconnect-steering idler arm bracket at right hand
frame rail and swing steering linkage down for pan
clearance.
5.
On L6 engines, remove front crossmember.
NOTE:
On
station wagon
let
stabilizer
bar
hang while removing crossmember.
"
6. Remove oil pan and discard gaskets and seals.
Installation
1.
Thoroughly clean all gasket sealing surfaces.
NOTE: Use
a
new pan gasket set.
2.
Install rear seal in rear main bearing cap.
3.
Install front Seal on crankcase front cover pressing
tips into holes provided in cover.
4.
Install side gaskets on cylinder block (fig. 6L).
5.
Complete installation as follows:
Life
1
i
If ^
jfp^;.^3p
>\~^^ \s3^^r' -'••'•'-^^Hll
|^=-5p|:*iil^
mm
Fig.
6L
-
Pan Gaskets and Seals
CHEVROLET CHASSIS SERVICE MANUAL
Page 283 of 659
ENGINE 6-18
NOTE:
Bolts into crankcase cover should be
installed last. They are installed at an angle
and holes line up after rest of pan bolts are
snugged up.
Chevrolet and Camaro
a. If crankshaft was rotated while pan was off, place
timing mark at 6:00 o'clock position.
b.
Install oil pan and torque bolts to specifications.
c. Using a suitable jack (and a block of wood to prevent
damaging oil pan) raise engine enough to remove 2" x
4"
wood blocks, then lower engine.
d. On vehicles equipped with automatic transmission
install converter housing underpan, then connect
transmission cooler lines.
e. Install and connect starter.
f. Lower vehicle and install fan blades as outlined in
Section 6K.
g. Connect upper and lower radiator hoses.
h. Install through bolts in engine front mounts.
i. Connect battery positive cable.
j.
Fill radiator with coolant and fill engine with oil,
then start engine and check for leaks.
Chevelie
* a. Install oil pan and torque bolts to specifications.
b.
On vehicles equipped with automatic transmission,
install converter housing underpan.
c. Install starter.
d. Install engine as outlined.
Chevy II
a. Install oil pan and torque bolts to specifications.
Fig.
7L- Removing Oil Sea! (Lower Half)
Fig.
8L - Removing Oil Seal (Upper Half)
b.
On L6 engines, install front crossmember.
c. Connect steering idler arm.
d. Install starter and connect wires.
e. Connect battery cable, fill with oil, start engine and
check for leaks.
OIL PUMP
Removal
1.
Remove oil pan as outlined.
2.
Remove two flange mounting bolts, pickup pipe bolt,
then remove pump and screen as an assembly.
Installation
1.
Align oil pump drive shafts to match with distributor
tang, then install oil pump to block positioning flange
over distributor lower bushing. Use no gasket.
NOTE:
Oil pump should slide easily into place,
if not, remove and reposition slot to align with
distributor tang.
2.
Install oil pan using new gaskets and seals as
outlined.
CHEVROLET CHASSIS SERVICE MANUAL
Page 284 of 659
ENGINE 6-19
OIL SEAL (REAR MAIN)
Replacement
The rear main bearing oil seal can be replaced (both
halves) without removal of the crankshaft.
NOTE:
Always replace the upper and lower
seal as a unit. Install with the lip facing toward
the front of the engine.
1.
With the oil pan removed, remove the rear main
bearing cap.
2.
Remove oil seal from the groove by lifting the end
tab (fig. 7L) then clean seal groove.
3.
Lubricate the lip and O.D. of a new seal with engine
oil. Keep oil off the parting line surface. Insert
seal in cap and roll it into place with finger and
thumb,
using light pressure so beads on seal O.D.
are not cut by seal groove at cap parting line. Be
sure tabs on seal are properly located in cross
grooves.
4.
To remove the upper half of the seal, use a small
hammer to tap a brass pin punch on one end of seal
until it protrudes far enough to be removed with
pliers (fig. 8L).
NOTE:
Always clean crankshaft surface re-
moving all foreign deposits before installing a
new seal. Also clean seal groove.
5. Lubricate the lip and O.D. of a new seal with engine
oil. Keep oil off the parting line surface. Gradually
push with a hammer handle, while turning crank-
shaft, until seal is rolled into place. (Similar to in-
stalling a main bearing.) Be careful that seal bead
on O.D. is not cut. Compress seal towards crank-
shaft as much as possible.
6. Install the rear main bearing cap (with new seal) and
torque to specifications. Be sure cross seal tabs
are in place and properly seated.
CRANKSHAFT PULLEY AND HUB
(Chevy II with L4 Engine)
Removal
1.
Drain radiator and disconnect upper and lower radi-
ator hoses at radiator.
2.
Remove radiator core as outlined in Section 13.
3.
Remove fan belt. Remove crankshaft pulley from
pulley hub.
4.
Install puller Tool J-6978 to pulley hub with two
3/8"
x 2" and one 5/16" x 2" bolts and remove hub
then remove puller tool.
Installation
1.
Coat oil seal contact area on hub with engine oil
position hub over crankshaft and key and start hub
into position with a mallet. Using Tool J-5590 drive
onto crankshaft until it bottoms against crankshaft
gear.
NOTE:
Crankshaft extends slightly through hub
and a tool is necessary to drive hub completely
into bottomed position.
2.
Install pulley onto hub.
NOTE:
There are two 3/8" holes and one
5/16" hole that must be matched on hub in order
Fig.
9L - Removing Torsional Damper
to properly position timing mark.
3.
Install fan belt and adjust using strand tension gauge.
4.
Install radiator as outlined in Section 13.
TORSIONAL DAMPER
Removal
1.
Remove radiator core, as outlined in Section 13.
2.
Remove fan belt and (if so equipped) accessory drive
pulley and belt.
3.
Install Tool J-6978 to damper and turn puller screw
to remove damper (fig. 9L). Remove tool.
Installation
1.
Coat front cover oil seal contact area of damper with
engine oil.
CAUTION: It is necessary to use installer
Tool J-22197 to prevent the inertia weight sec-
Fig.
10L - Installing Torsional Damper
CHEVROLET CHASSIS SERVICE MANUAL