
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

ENGINE 6-25
refer to Section 6 of the Chassis Overhaul Manual.
Because of the interchangeability and similarity of
many engines, engine sub-assemblies and engine parts,
regardless of which passenger vehicle they are used in,
typical illustrations and procedures are used except
where specific illustrations or procedures are necessary
to clarify the operation. Although illustrations showing
bench operations 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
battery.
3.
Remove hood as outlined in Section 11.
4.
Remove radiator and shroud as outlined in Sec-
tion 13.
5. Remove fan blade and pulley as outlined in Sec-
tion 6K.
6. Disconnect wires at:
• Starter solenoid
• Delcotron
• Temperature switch
• Oil pressure switch
• Coil
7. Disconnect:
• Accelerator linkage at pedal lever.
• Exhaust pipes at manifold flanges.
• Vacuum line to power brake unit at manifold (if
so equipped),
• Power steering pump lines at pump end (if so
equipped).
• Fuel line (from tank) at fuel pump.
• Engine cooler lines (if so equipped).
• Oil pressure gauge line (if so equipped).
8. Raise vehicle and place on jack stands.
9. Remove propeller shaft.
NOTE:
If plug for propeller shaft opening
in transmission is not available, drain
transmission.
10.
Disconnect:
• Shift linkage at transmission.
• Speedometer cable at transmission.
• Transmission cooler lines (if so equipped).
11.
On synchromesh equipped vehicles, disconnect clutch
linkage at cross-shaft then remove cross-shaft en-
gine bracket.
12.
Remove rocker arm covers as outlined, then attach
engine lifting adapter at the proper cylinder head bolt
locations.
13.
Remove front mount 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 re-
move crossmember.
NOTE:
On Chevrolets it will be necessary to
remove mount from transmission 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
plate.
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
a. 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
Transmissions
a. Position engine adjacent to the transmission and
align the converter with the flywheel.
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 bolts and torque to specifications.
5. Raise engine enough to install rear crossmember,
then install crossmember, install rear mount, lower
engine and torque rear mount to specifications.
CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH
AND
TRANSMISSIONS
7-23
Assembly (Fig.
4X)
1.
With detent spring tang projecting
up
over
the 3rd
and
4th
shifter shaft cover opening install
the
first
and second detent
cam
onto
the
detent
cam
pivot
pin.
With
the
detent spring tang projecting
up
over
the
first
and
second shifter shaft cover hole install
the
3rd
and 4th
detent
cam,
NOTE:
The 1-2
detent
cam has a
.090" greater
contour
on the
inside detent notch.
2.
3.
Install detent
cam
retaining
"C"
ring
to
pivot shaft,
and hook spring into detent
cam
notches.
Install
1-2 and 3-4
shifter shaft assemblies
in
cover
being careful
not to
damage seals. Install both shift
forks
to
shifter shaft assemblies, lifting
up on
detent
cam
to
allow forks
to
fully seat into position.
4.
Install reverse detent ball
and
spring
to
cover, then
install reverse shifter shaft assembly
to
cover.
5.
Install outer shifter levers, flat washers, lock wash-
ers
and
bolts.
Installation
1.
Shift shifter levers into neutral detent (center) posi-
tion. Position cover gasket
on
case.
2.
Carefully position side cover into place making sure
the shift forks
are
aligned with their respective
mainshaft clutch sliding sleeves.
Install cover attaching bolts
and
tighten evenly
to
specified torque.
Remove filler plug
and add
lubricant specified
in
Section
0, to
level
of
filler plug hole.
3.
4.
ALUMINUM POWERGLIDE
INDEX
Page
General
Description
7-23
Maintenance
and
Adjustments .............. 7—23
Oil
Level Check
7-23
Periodic
Oil
Change
7-24
Periodic
Low
Band Adjustment
7-24
Manual
Shift Linkage Check
and
Adjust
7-24
Floor
Shift Linkage
7-25
Floor
Mounted Control Lever
and
Bracket
Assembly
7-29
Throttle
Valve Linkage
.... 7-29
Neutral
Safety Switch
.. . 7-30
Throttle
Return Check Valve (Dashpot)
7-30
Component
Parts Replacement
7-30
Transmission
Replacement .............. 7—30
Page
Other
Service Operations
7-32
Diagnosis
7-32
Warming
Up
Transmission
7-32
Shop
Warm
Up , 7-32
Road
Warm
Up 7-32
Checking
Fluid Level
and
Condition
7-32
Manual
Linkage
7-32
Oil
Leaks
7-33
Basic
Pressure Checks
7-33
Wide
Open Throttle Upshift Pressure Check
.... 7-33
Idle
Pressure
in
Drive Range
7-33
Manual
"Low"
Range Pressure Check .......
7-33
Drive
Range Overrun (Coast) Pressure
.
.......
7-33
Powerglide
Shift Points
. . 7-35
GENERAL DESCRIPTION
The case
and
converter housing
of the two
speed alumi-
num Powerglide Transmission
is a
single case aluminum
unit. When
the
manual control
is
placed
in the
drive
po-
sition,
the
transmission automatically shifts
to low
gear
for initial vehicle movement.
As the car
gains speed
and
depending
on
load
and
throttle position,
an
automatic shift
is made
to
high gear.
A
forced downshift feature
pro-
vides
a
passing gear
by
returning
the
transmission
to low
range.
The
oil
pump assembly
is a
conventional gear type
and
the
oil
pump housing
is of the
large diameter type acting
as
the
front bulkhead
of the
transmission.
The
torque
converter
is a
conventional three element welded design
bolted
to the
engine flywheel which drives through
a
two-
speed planetary gearset.
The
high clutch assembly
is
typical
of the
designs used
in
this type transmission.
The
aluminum Powerglide uses
an
output shaft mounted
gov-
ernor which requires
a
hole through
the
output shaft.
The
reverse clutch assembly
is a
multiple disc type clutch.
The steel plates
are
splined directly
to the
case while
the
face plates
are
splined
to the
internal
or
ring gear.
The
clutch piston operates within
the
rear portion
of the
case.
The internal diameter
of the
pistoh
is
sealed to
an
integral
hub portion
of the
case rear bulkhead.
The
outside
dia-
meter
is
sealed
to a
machined portion
of the
case.
The
piston
is
hydraulically applied
and is
released
by
separate
coil springs.
The
valve body assembly
is
bolted
to the
bottom
of the
transmission case
and is
accessible
for
service
by
removing
the oil pan
assembly.
The
valve
body consists
of an
upper
and
lower body located
on
either
side
of a
transfer plate.
The
vacuum modulator
is lo-
cated
on the
left rear face
of the
transmission case.
The
modulator valve bore
is
located
in the
upper valve body.
MAINTENANCE
AND
ADJUSTMENTS
OIL LEVEL CHECK
The transmission
oil
level should
be
checked period-
ically
as
recommended
in
Section
0. Oil
should
be
added
only when level
is on or
below
the
"ADD" mark
on the dip
stick with
oil hot or at
operating temperature.
The oil
level
dip
stick
is
located
at the
right rear
of the
engine
compartment. Fill with
oil
specified
in
Section
0.
In order
to
check
oil
level accurately,
the
engine should
be idled with
the
transmission
oil hot and the
control
lever
in
neutral (N) position.
It
is
important that
the oil
level
be
maintained
no
higher than
the
"FULL" mark
on the
transmission
oil
level gauge.
DO NOT
OVERFILL,
for
when
the oil
level
CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-24
is at the full mark on the dip stick, it is just slightly be-
low the planetary gear unit. If additional oil is added,
bringing the oil level above the full mark, the planetary
unit will run in the oil, foaming and aerating the oil. This
aerated oil carried through the various oil pressure pas-
sages (low servo, reverse servo, clutch apply, converter,
etc.) may cause malfunction of the transmission assem-
bly, resulting in cavitation noise in the converter and
improper band or clutch application. Overheating may
also occur.
If the transmission is found consistently low on oil, a
thorough inspection should be made to find and correct
all external oil leaks.
PERIODIC OIL CHANGE
The transmission oil should be changed periodically as
recommended in Section 0, and whenever transmission is
to be removed from the vehicle for repairs.
1.
Run engine for one minute in neutral prior to chang-
ing.
2.
Be sure vehicle is level or raise from the rear only.
3.
Remove the oil pan drain plug and allow oil to drain
thoroughly into a pan or can.
Replace drain plug and refill with approximately two
quarts of oil specified in Section 0.
NOTE: To refill the transmission, remove dip
stick from oil filler tube and refill transmission
with oil specified in Section 0 using filler tube
and funnel J-4264. Then, after shifting into all
ranges at idle speed to fill all oil passages, the
engine should be run at 800-1000 rpm with the
transmission in Neutral until the oil warms up,
then add oil as required to raise the fluid level
to the full mark on the dip stick. Refill capacity
is approximately 2 qts.
4.
Fig.
1PG - Adjusting Low Band Using J-21848
PERIODIC LOW BAND ADJUSTMENT (Fig. 1PG)
Low band adjustment should be periodically performed
at 12,000 mile intervals, or sooner, as necessary if op-
erating performance indicates low band slippage.
1.
Raise vehicle and place selector lever in neutral.
2.
Remove protective cap from transmission adjusting
screw.
3.
a. On Corvette Models: Drop left exhaust pipe for
clearance.
b.
On Chevelle Models: To gain clearance between
underbody and transmission, it may be necessary
to remove rear mount bolts from crossmember,
and move transmission slightly toward passenger
side of vehicle. .
4.
Loosen adjusting screw lock nut 1/4 turn and hold in
this position with wrench.
5.
Using Special Tool J-21848 adjust band to 70 in. lbs.
and back off four (4) complete turns for a band which
has been in operation for 6,000 miles or more,.or
three (3) turns for one in use less than 6,000 miles.
CAUTION: Be sure to hold the adjusting screw
lock nut at 1/4 turn loose with a wrench during"
the.adjusting procedure.
6. Tighten the adjusting screw lock nut to specified
torque.
CAUTION: The amount of back-off is not an
approximate figure, it must be exact.
MANUAL SHIFT LINKAGE CHECK & ADJUST
(Column Type)
1.
The shift tube and lever assembly must be free in the
mast jacket. See Section 9 for alignment of steering
column assembly if necessary.
2.
To check for proper shift linkage adjustment, lift
the transmission selector lever towards the steering
wheel. Allow the selector lever to be positioned in
drive (D) by the transmission detent.
NOTE: Do not use the indicator pointer as a
reference to position the selected lever. When
performing linkage adjustment, pointer is ad-
justed last.
3.
Release the selector lever. The lever should be in-
hibited from engaging low range unless the lever is
lifted.
4.
Lift the selector lever towards the steering wheel,
and allow the lever to be positioned in neutral (N) by
the transmission detent.
5.
Release the selector lever. The lever should now
be inhibited from engaging reverse range unless the
lever is lifted.
6. A properly adjusted linkage will prevent the selector
lever from moving beyond both the neutral detent, and
the drive detent unless the lever is lifted to pass
over the mechanical stop in the steering column.
7.
In the event that an adjustment is required, place
the selector lever in drive (D) position as determined
by the transmission detent. See Steps 2 and 3.
8. Loosen the adjustment swivel at the cross-shaft,
and rotate the transmission lever so that it contacts
the drive stop in the steering column.
9. Tighten the swivel and recheck the adjustment. See
2 and 6.
CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-37
LI.
- LI Range can be selected at any vehicle speed,
and the transmission will shift to second gear
and remain in second until vehicle speed is re-
duced to approximately 40 MPH, .depending on
axle ratio. LI Range position prevents the trans-
mission from shifting out of first gear.
It is very important that any communication concerning
the Turbo Hydra-Matic always contain the transmission
serial number and that all transmission parts returned
to Chevrolet Motor Division always be tagged with the
transmission serial number.
MAINTENANCE AND ADJUSTMENTS
TRANSMISSION FLUID
Transmission fluid level should be checked with trans-
mission warm and selector lever in "P" Park position,
every time engine oil level is checked or as specified in
Section 0 when engine oil is changed.
CAUTION: Since the Turbo Hydra-Matic trans-
mission is very sensitive to oil level, special
precautions should be taken when checking the
oil level, to insure against an overfifE
Transmission fluid should be changed as specified in
Section 0.
FLUID LEVEL INDICATOR
The fluid level indicator is located in the filler pipe at
the right rear corner of the engine. To bring the fluid
level from the add mark to the full mark add 1 pint.
Fluid level should be to the full mark with transmission
at normal operating temperature. With cold fluid the
level should be at the add mark or slightly below.
SHIFT CONTROL LINKAGE ADJUSTMENT
Adjust linkage as shown below and in Figure 2.
1.
The shift tube and lever assembly must be free in the
mast jacket See Section 9 for alignment of steering
column assembly if necessary.
2.
To check for proper shift linkage adjustment, lift the
transmission selector lever towards the steering
wheel. Allow the selector lever to be positioned in
drive (D) by the transmission detent.
NOTE: Do not use the indicator pointer as a
reference to position the selector lever. When
performing linkage adjustment, pointer is ad-
justed last.
3.
Release the selector lever. The lever should be in-
hibited from engaging low range unless the lever is
lifted.
4.
Lift the selector lever towards the steering wheel,
and allow the lever to be positioned in neutral (N) by
the transmission detent.
5.
Release the selector lever. The lever should now be
inhibited from engaging reverse range unless the
lever is lifted.
6. A properly adjusted linkage will prevent the selector
lever from moving beyond both the neutral detent,
and the drive detent unless the lever is lifted to pass
over the mechanical stop in the steering column.
See schematic diagram.
7.
In the event that an adjustment is required, place the
selector lever in drive (D) position as determined by
the transmission detent. See Steps 2 and 3.
8. Loosen the adjustment swivel at the cross-shaft, and
rotate the transmission lever so that it contacts the
drive stop in the steering column.
9. Tighten the swivel and recheck the adjustment. See
Steps 2 and 6. -
l(h Readjust indicator needle if necessary to agree with
the transmission detent" positions. See Section 9.
11.
Readjust neutral safety switch if necessary to pro-
vide the correct relationship to the transmission de-
tent positions. See Section 12.
12.
When properly adjusted the following conditions must
be met by manual operation of the steering column
shift lever:
a. From reverse to drive position travel, the trans-
mission detent feel must be noted and related to
indicated position on dial.
b.
When in drive and reverse positions, pull lever
rearward (towards steering wheel) and then re-
lease. It must drop back into position with no
restrictions.
NEUTRAL SAFETY SWITCH ADJUSTMENT
The neutral safety switch must be adjusted so that the
car will start in the park or neutral position, but will not
start in the other positions. For replacement refer to
Section 12 of this Manual.
DRAINING AND REFILLING TRANSMISSION
Drain oil immediately after operation before it has had
an opportunity to cool.
To drain oil proceed as follows:
1.
Remove bottom pan attaching screws, pan, and gas-
ket.
2.
Remove oil strainer. Remove "O" ring seal from
pick-up pipe and discard.
3.
Discard strainer if dirty.
4.
Install new "O" ring seal on pick-up pipe and install
strainer and pipe assembly.
5.
Thoroughly clean bottom pan.
6.. Affix new gasket to bottom pan with petroleum jelly.
7.
Install bottom pan with attaching screws and torque
to specifications;
8. If only the pan has been removed, pour approximately
7-1/2 pints of fluid into the transmission. If the
valve body has also been removed use 9-1/2 pints.
After a complete overhaul approximately 19 pints
are required. Be sure container, spout, or funnel is
clean.
9. Start engine and let idle (carburetor off fast idle
step).
Place selector lever in P position and apply
hand brake.
10.
With transmission warm (approximately 150°F), add
fluid to bring level to full mark on indicator.
CAUTION: Do not overfill. Foaming will re-
sult.
CHEVROLET CHASSIS SERVICE MANUAL

SECTION
9
STEERING
CONTENTS
OF
THIS SECTION
Standard Steering
9-1
Power Steering
9-33
Special Tools
9-40
STANDARD STEERING
INDEX
Page
General Description 9.x
Maintenance and Adjustments 9.1
Adjustments
........................
9-2
Steering Gear 9-2
Steering Wheel Alignment and Higji
Point Centering. . . . 9-4
Toe-in Adjustment 9-4
Corvette Steering Ratio . . . . 9-4
Component Replacement and Repairs . . . . 9-4
Steering Wheel . . . 9-4
Regular Production 9-4
Simulated Wood . . . . 9-5
Corvette Telescoping 9-5
Steering Coupling . 9-6
Steering Gear . 9-9
Sector Shaft Seal Replacement 9-10
Steering Column 9-10
Removal 9-10
Disassembly—Syncromesh Column 9-12
Page
Assembly—Syncromesh Column . . 9-14
Disassembly—Column Mounted Powerglide
Lever or Floor Shift Column 9-16
Assembly-^Column Mounted Powerglide
Lever or Floor Shift Column g_x7
Disassembly—Tilt Column 9-19
Assembly—Tilt Column 9-21
Disassembly—Standard Corvette Column 9-23
Assembly—Standard Corvette Column 9-25
Disassembly—Corvette Telescoping Column .... 9.26
Assembly—Corvette Telescoping Column 9-27
Installation 9.27
Steering Linkage 9.29
Tie
Rods.
. 9-29
Relay Rod . . 9-31
Idler Arm . . . . 9-31
Pitman Arm. . 9-32
Steering Arms • • • • 9-32
Steering Damper 9-32
GENERAL DESCRIPTION
The regular production steering gear
is the
recirculat-
ing ball type. This gear provides
for
ease
of
handling
by
transmitting forces from worm
to
sector gear through
ball bearings.
The
steering linkage
is of
the relay type,
and extended interval lubrication design, with the pitman
arm connected
to one end of
the relay
rod. The
other
end
of
the
relay
rod is
connected
to an
idler
arm
which
is
connected
to the
frame side rail opposite
the
steering
gear.
Two
adjustable
tie
rods connect
the
relay
rod to
the steering arms.
All passenger
car
models
for 1967 are
equipped with
new energy absorbing steering columns.
The
mast jacket,
shift tube,
and
steering shaft
are
designed
to
collapse
under various front impact conditions.
All new
columns
are
of
this design, including
the
tilt option and telescope
option.
MAINTENANCE
AND
ADJUSTMENTS
The manual steering gear
is
filled
at the
factory with
a
water resistant grease. Seasonal change
of
this lubrica-
tion
is
unnecessary and
the
housing should
not be
drained.
The steering gear lubricant level should
be
checked every
36,000 miles. Whenever required, additions should
be
made using
a
water resistant
EP
chassis lubricant.
Check and fill steering gear
as
follows:
1.
Remove lower
and
outboard cover retaining screws
(fig.
1).
2.
Insert filling device
in
lower screw hole.
3.
Inject lubricant until
it
appears
in
outboard screw
hole; gear
is now
filled
to
correct level.
The steering linkage should
be
lubricated with water
resistant
EP
chassis lubricant every 6,000 miles
or six
months, whichever occurs first. Lubrication points
and
additional information
on the
chassis lubricant
to be
used
can
be
found
in
Section
0 --
General Information
and
Lubrication.
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 9-35
Fig.
66—Power Steering Diagnosis
shown in Figure 66. Gauge must be between shut-
off valve and pump. Open shut-off valve,
b.
Remove filler cap from pump reservoir and check
fluid level. Fill pump reservoir to full mark on
dip stick. Start engine and, holding steering
wheel against stop, check connections at Tool
J-5176 for leakage. Bleed system as outlined
under Maintenance and Adjustments. Insert ther-
mometer (Tool J-5421) in reservoir filler open-
ing. Move steering wheel from stop to stop
several times until thermometer indicates that
hydraulic fluid in reservoir has reached tempera-
ture of 150° to 170°F.
CAUTION: To prevent scrubbing flat spots on
tires,
do not turn steering wheel more than five
times without rolling car to change tire-to-floor
contact area.
c. Hold steering wheel against a stop momentarily
and read pressure gauge. If the maximum pres-
sure is below specifications, a faulty hydraulic
circuit is indicated. To determine which part is
faulty, proceed with test number two.
Test Number Two—Oil Circuit Closed
a. Slowly turn shut-off valve on J-5176 to closed
position and read pressure indicated on gauge.
Quickly reopen valve to avoid pump damage, if
indicated pressure is less than specification,
pump output is below requirement and pump may
be considered faulty. If pressure indicated is
within specifications, it may be safely assumed
that the external hoses, connections, valve and
adapter or steering gear is at fault.
NOTE:
If pump proves faulty in test number
two,
test should be repeated after pump is re-
paired and installed in vehicle. This will provide
a means of checking the repairs made to the
pump and the condition of the steering gear or
valve and adapter which may also be faulty.
COMPONENT REPLACEMENT AND REPAIRS
POWER STEERING PUMP
Removal (Fig. 67)
1.
Disconnect hoses at pump. When hoses are discon-
nected, secure ends in raised position to prevent
drainage of oil. Cap or tape the ends of the hoses to
prevent entrance of dirt.
NOTE:
Chevelle with 396 engine uses a remote
reservoir. It is necessary to disconnect the
reservoir to pump hose before removing the
pump.
Hold a 1 qt. container under the reservoir
when the hose is removed to catch the fluid.
2.
Install two caps at pump fittings to prevent drainage
of oil from pump.
3.
Remove pump belt.
4.
On Corvette with 427 engine, loosen alternator ad-
justment and remove pump to alternator belt.
5. Remove pump from attaching parts and remove pump
from vehicle.
NOTE:
On Chevrolet and Chevy II equipped with
283 and 327 engine it may be necessary to re-
move pump brace.
6. Remove drive pulley attaching nut.
7. Remove pulley from shaft with Tool J-21239 (for
stamped pulleys) or Tool J-8433-1 with J-8433-2
adapter (for cast iron pulleys). Do not hammer
pulley off shaft as this will damage the pump.
Fig.
67—Power Steering Pump Mounting
CHEVROLET CHASSIS SERVICE MANUAL