steering CHEVROLET CAMARO 1967 1.G Chassis Manual PDF

STEERING
9-26

Fig.
54—Corvette Telescoping Column—Exploded View

1.
Wiring Protector

2.
Screw

3. Screw

4. Turn Signal Switch

5. Upper Bearing

Housing

6. Signal Switch Cover

7. Escutcheon
8

9

10

11

12

13

14
8.
Mast Jacket

9. Bumper

Key

Bumper

Bumper Key Strap

Steering Wheel Nut

Upper Bearing Preload

Spring
15.
Cancelling Cam

16.
Retaining Ring

17.
Thrust Washer

18.
Wave Washer

19.
Retainer

20.
Bearing

21.
Spring

22.
Washer
23. Retaining Ring

24.
Lower Steering

Shaft

25.
Upper Steering

Shaft

26.
Locking
Rod

27.
Wedge

Disassembly—Corvette Telescoping Column (Fig. 54).

1.
Place column on a suitable work bench.,

2.
Remove upper bearing preload spring and cancelling

cam from end of shaft.

3.
Remove turn signal lever retaining screw and re-

move lever. Push hazard warning knob in; unscrew

and remove knob.

4.
Remove upper retaining ring from upper steering

shaft using a screwdriver. Remove thrust washer

and wave washer. -

5. Remove three- screws from the lower bearing

retainer.
6. Carefully slide steering shaft assembly out of lower

end of mast jacket.

7. Remove flange bolt and flange from lower end of

shaft. -

CAUTION: Use caution when removing the low-

er retaining ring in the following step. The lower

bearing washer is under load from the com-

pressed spring and could cause injury when the

lower retaining ring is removed.

8. Carefully remove lower retaining ring as shown in

Figure 55. Remove washer* spring, packing, and

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-27

Fig.
55— Removing Lower Bearing Retaining Ring

bearing assembly from lower end of shaft.

9. Push upper steering shaft section into lower section

until spring pin is visible at pin access hole in lower

section. Drive out spring pin.

10.
Remove upper shaft section from lower section. If

necessary, replace locking wedge and locking rod at

this time.

11.
Remove bumper key strap (fig. 56). Remove keys and

bumper assembly.

12.
Remove screws securing bottom of wiring protector

to column.

13.
Slide inner jacket section, switch cover, switch,

upper bearing housing, wiring protector, and es-

cutcheon off top end of jacket.

14.
If necessary, remove three turn signal switch mount-

ing screws and remove switch and upper bearing

housing.

15.
If necessary, remove seals from I.D. of mast jacket.

16.
If necessary, unwrap mesh cover from jacket.

Assembly—Corvette Telescoping Column (Fig. 54)

1.
Apply a thin coating of lithium soap grease to all

friction surfaces.

2.
If seals were removed from I.D. of mast jacket,

cement new seals in positions where old seals were

removed.

3.
Place locking wedge and locking rod into upper shaft

and slide upper shaft into lower shaft.

4.
Align upper and lower shafts and insert spring pin

into access hole.

5. Install bearing, packing, spring, washer, and retain-

ing ring on bottom of steering shaft. Seat the re-

taining ring into the steering shaft groove with a

screwdriver.

6. Carefully slide steering shaft into lower end of mast

jacket.

7. Install bearing retainer over lower end of shaft and

lower end of jacket. Secure retainer with three

screws.

8. Install flange and flange bolt on lower end of steering

shaft.

9. Feed wires of turn signal switch through turn signal

switch cover and escutcheon, and place switch and

upper bearing housing in cover. Secure switch to

cover with three mounting screws.
10.
Place wiring protector inside escutcheon.

11.
Start escutcheon and wiring protector, with signal

switch wires, over end of outer jacket.

12.
Slide inner jacket section into outer jacket section.

13.
Secure switch cover to flange of inner jacket section

by tightening the signal switch mounting screws.

14.
Secure the bottom of the wiring protector to the col-

umn with two screws.

15.
Assemble keys and bumper and place the entire as-

sembly in position in the jacket. Install bumper key

strap.

16.
Slide wave washer, thrust washer, and upper retain-

ing ring into place at top of shaft. Seat retaining ring

in steering shaft groove with a screwdriver.

17.
Place turn signal switch lever in position and secure

with screw. Screw hazard warning knob into position.

18.
If mesh cover was removed, wrap mesh cover around

mesh section of jacket and secure with electricians

or friction tape.

19.
Slide cancelling cam and upper bearing preload

spring over top end of shaft.

Installation

NOTE:
Before placing column in position in

vehicle, refer to figures 19 through 23 and slide

dash panel seals, covers, plates, and clamps

loosely into position on column for later

installation.

1.
Move front seat back as far as possible to provide

Fig.
56—Removing Bumper Key Strap

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-28

WEDGE SHIM

2.
Fig.
57—Instrument Panel Mounting Bracket—Chevrolet

maximum clearance. Carefully work column into po-

sition in vehicle and at steering gear. If column is

equipped with lower shift levers, mechanic at engine

can pilot levers through dash panel opening as col-

umn is lowered into position.

NOTE:
Install instrument panel column mount-

ing bracket loosely as instructed in applicable

step below. Bracket is not to be tightened se-

curely until after steering coupling is connected.

Chevrolet only (fig. 57):

Lay retainers and wedge shims in position on in-

strument panel column mounting bracket and place

bracket in correct position on underside of instru-
3.

4.
Fig.
59—Instrument Panel Mounting Bracket—Chevy

ment panel. Loosely install.bracket using bracket to

column mounting screws and bracket nuts.

Chevelle only (fig. 58):

Lay wedge shim in position on instrument

column mounting bracket and place bracket

rect position on underside of instrument

Loosely install bracket using bracket to

mounting bolts, bracket nuts, and bracket to

ment panel washer and bolt as shown in

Chevy n only (fig. 59):

Lay wedge shims in position on instrument

Fig.
58—Instrument Panel Mounting Bracket—Chevelle
Fig.
60—Instrument Panel Mounting Bracket—Comoro

CHEVROLET CHASSIS SERVICE MANUAL
panel

in cor-

panel.

column

instru-

58.

Figure

panel

STEERING 9-29

column mounting bracket, and place bracket in cor-

rect position on underside of instrument panel.

Loosely install bracket using bracket to column

mounting screws and bracket to instrument panel

washers and bolts.

NOTE: Steering shaft to gear clamp must be

tightened before column attaching bolts are

torqued. Refer to "Steering Gear-Chevy n",

installation procedure, for correct Chevy II

steering column alignment procedure.

5.
Camaro only (fig. 60):

Lay wedge shim in position on instrument panel

column mounting bracket and place bracket in cor-

rect position on underside of instrument panel.

Loosely install bracket using bracket to column

mounting screws, nuts, and washer and bolt as shown

in Figure 60.

6. Corvette only (fig. 61):

Loosely secure column mounting bracket to sup-

port plate and instrument panel with washers and

bolts.

7.
Secure flanged end of column to steering coupling

with lockwashers and nuts. On Chevy n, connect col-

umn to steering gear with clamp, clamp bolt, and

nut. On Corvette, slide steering shaft flange into

lower coupling
half,
and install upper clamp bolt

loosely; also secure support, seal and clamp loosely

at dash on engine side.

8. Tighten instrument panel mounting bracket bolts and

nuts.
Refer to torque specifications at rear of manual

for correct torque values.

9. Chevrolet only (fig. 15):

Place upper and lower mast jacket covers in po-

sition and secure covers together and to instrument

panel using nuts and screws as shown in Figure 15.

10.
Chevy H only (fig. 18):

Place lower mast jacket cover in position under

mast jacket and secure to upper cover with screws.

11.
CheveUe only (fig. 15):

Place mast jacket trim cover in position over col-

Fig.
61—Instrument Panel Mounting Bracket and

Support Plqte—Corvette
umn on underside of instrument panel and secure

with screws.

12.
Corvette only (fig. 14):

Slide escutcheon into position at instrument panel

and secure with screws. Place upper end lower

covers in position and secure with screws.

13.
On Chevrolet and CheveUe models with column

mounted powerglide controls, secure transmission

shift indicator pointer into position with set screw

(fig. 15). ,

14.
Chevrolet only (fig. 19):

a. Secure seal and cover to dash panel with screws.

b.
Place clamp assembly in position and install

clamp screw.

c. Install dash panel trim cover with mounting

screws.

15.
Chevelle only (fig. 20):

a. Secure seal and inner and outer covers to dash

panel with screws.

b.
Secure inner and outer covers together with

screws.

c. Install trim cover to dash panel with two

retainers.

16.
Chevy H only (fig. 21):

a. Secure seal, retainer, and clamp to dash panel

with screws.

b.
Install clamp screw.

c. Slide collar into position. Pinch and staple upper

tabs together.

17.
Camaro only (fig. 22):

a. Secure seal, upper cover, and lower cover to

dash panel with screws.

b.
Secure upper and lower cover together with

screws.

c. Fold rubber boot over securely against dash panel

to conceal covers.

18.
Corvette only (fig. 23):

a. Secure seal and support assembly to dash panel

on engine compartment side.

b.
Tighten clamp, washer, and clamp bolt on engine

compartment side.

19.
Connect transmission linkage to lower shift tube

levers in engine compartment, if column is so

equipped. Adjust levers as outlined in Section 7.

20.
Install steering wheel as outlined in this section.

21.
Connect directional signal, horn, back-up lamp, and

neutral start switch at wiring harness plugs. Adjust

back-up lamp, neutral start switch as outlined in

Section 12.

22.
Adjust steering gear and align and center steering

wheel as outlined in this section.

STEERING LINKAGE (Fig. 62)

TIE RODS

There are two tie rod assemblies used on all models.

Each assembly is of three piece construction, consisting

of a sleeve and two tie rod ends. The ends are threaded

into the sleeve and locked with clamps. Right and left

hand threads are provided to facilitate toe-in adjustment

and steering gear centering.

The tie rod ends are self-adjusting for wear and re-

quire no attention in service other than periodic lubrica-

tion and occasional inspection to see that ball studs are

tight. Replacement of tie rod ends should be made when

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-30

CHEVROLET
CHEVELLE

CHEVII
CAMARO

CORVETTE

Fig.
62—Steering Linkage

excessive up and down motion is evident or if any lost

motion or end play at ball end of stud exists.

Removal

1.
Remove cotter pins from ball studs and remove

castellated nuts.

2.
To remove outer ball stud, tap on steering arm at

tie rod end with a hammer while using a heavy

hammer or similar tool as a backing (Fig. 63). If
necessary pull downward on tie rod to remove from

steering arm.

3.
Remove inner ball stud from relay rod using same

procedure as described in Step 2.

4.
To remove tie rod ends from tie rods loosen clamp

bolts and unscrew end assemblies.

Installation

1.
If the tie rod ends were removed, lubricate the tie

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-31

Fig.
63—Freeing Ball Stud

rod threads with EP Chassis lube and install ends on

tie rod making sure both ends are threaded ah equal

distance from the tie rod.

2.
Make sure that threads on ball stud and in ball stud

nuts are perfectly clean and smooth. Install neoprene

seals on ball studs.

NOTE: If threads are not clean and smooth,

ball studs may turn in tie rod ends when at-

tempting to tighten nut.

3.
Install ball studs in steering arms and relay rod.

4.
Install ball stud nut, and install cotter pins. Lubri-

cate tie rod ends.

5.
Adjust toe-in as described in Section 3.

NOTE: Before locking clamp bolts on the rods,

make sure that the tie rod ends are in alignment

with their ball studs (each ball joint is in the

center of its travel). If the tie rod is not in

alignment with the studs, binding will result.

RELAY ROD-ALL MODELS EXCEPT CORVETTE

Removal

1.
Remove inner ends of tie rods from relay rod as

described under Tie Rod - Removal.

2.
Remove cotter pin and nut from relay rod ball stud

attachment at pitman arm.

3.
Detach relay rod from pitman arm. Shift steering

linkage as required to free pitman arm from relay

rod.

4.
Remove cotter pin and nut from idler arm and re-

move relay rod from idler arm.

Installation

1.
Install relay rod to idler arm, making certain idler

stud seal is in place, then install and tighten nut.

Advance nut just enough to align castellation with

cotter pin hole and install pin.

2.
Raise end of rod and install on pitman arm. Secure

with nut and cotter pin.
3.
Install tie rod ends to relay rod as previously

described under Tie Rods. Lubricate tie rod ends.

4.
Adjust toe-in (see Section 3) and align steering wheel

as described previously in this section under Steer-

ing Wheel Alignment and High Point Centering.

RELAY ROD-CORVETTE

Removal

1.
Remove steering damper from relay rod as outlined

under Steering Damper-Removal. Remove anchor

bracket from relay rod by disconnecting two mount-

ing bolts.

2.
Remove inner ends of tie rods from relay rod as

described under Tie Rod--Removal.

3.
Remove cotter pin from end of relay rod at pitman

arm ball stud attachment, and remove stud nut.

4.
Tap brJl stud out of pitman arm and lower relay rod.

5.
Remove cotter key and nut from idler arm and re-

move relay rod from idler arm. Remove washer and

seal from idler arm.

Installation

1.
Place relay rod on idler arm stud, making certain

idler stud seal and washer are in place, then install

and tighten nut. Advance nut just enough to align

castellation with cotter pin hole and install pin.

2.
Install new seal and clamp over ball at end of pitman

arm.

3.
Install inner spring seat and spring to relay rod.

4.
Raise end of rod and install on pitman arm.

5.
Install spring seat, spring, and end plug.

6. Tighten end plug until springs are compressed and

plug bottoms, then back off 3/4 turn plug amount

necessary to insert cotter pin. Insert cotter pin to

lock adjustment.

7.
Install tie rod ends to relay rod as previously de-

scribed under Tie Rods.

8. Lubricate tie rod ends and pitman arm to relay rod

ball joint.

9. Install steering damper bracket and tighten bolts.

Install damper as outlined under Steering Damper--

Installation.

10.
Adjust toe-in and align steering wheel as described

previously in this section.

IDLER ARM

Chevrolet, Chevelle, Comoro, and Corvette (Fig. 62)

Removal

1.
Remove idler arm to frame nut, washer, and bolt.

No washer is used on Corvette.

2.
Remove cotter pin and nut from idler arm to relay

rod ball stud.

3.
Remove relay rod from idler arm by tapping relay

rod with a hammer using a heavy hammer as a

backing.

4.
Remove idler arm.

Installation

1.
On Chevrolet, place seal in position on idler arm

stud; position stud up through frame, and secure with

lock washer and nut.

2.
On Chevelle, Camaro, and Corvette, position idler

CHEVROLET CHASSIS SERVICE MANUAL

STEERING
9-32

arm on frame and install mounting bolts, washers

and nuts. No washer is used on Corvette.

Install relay rod to idler arm, ^making certain seal

is on stud. Install and tighten nut.

Install cotter pin.

Refer to torque specifications at rear of manual for'

correct torque values.

Chevy II (Fig. 62}

Removal

1.
Remove cotter pin, nut and washer securing idler

arm to relay rod.

2.
Remove relay rod from idler arm.

3.
If equipped with power steering disconnect power

cylinder shaft from idler arm bracket.

4.
Remove three idler bracket to frame bolts and nuts

and remove bracket and idler arm assembly.

5.
Remove cotter pin, nut, washer and bolt securing the

idler arm to the bracket.

6. Press out the idler arm bushing for replacement.

Installation

NOTE: Installation must be done with front

wheels straight ahead or the car will lead to one

side.

1.
Install idler arm bushing, if previously removed.

NOTE: Make certain the outer sleeve of the

bushing does not protrude above surface of idler

arm.

2.
Reverse removal procedure and torque all nuts ac-

cording to specifications.

PITMAN ARM

Removal

1.
Remove cotter pin from pitman arm ball stud and

remove nut.

2.
Remove relay rod from pitman arm by tapping on

side of rod or arm in which the stud mounts with a

hammer while using a heavy hammer or similar tool

as a backing. Pull down on relay rod to remove

from stud.

3.
Remove pitman arm nut from sector shaft and mark

relation of arm position to shaft.

4.
Remove pitman arm with Tool J-6632 as shown in

Figure 2.

Installation

1.
Install pitman arm on sector shaft, lining up the

• marks made upon removal.

2.
Install sector shaft nut.

3.
Position relay rod on to pitman arm. Install nut.

Continue to tighten arm enough to align castellation

with hole in stud and install cotter pin.
STEERING ARM

If, through collision or other damage, it becomes nec-

essary to remove and replace either steering arm, pro-

ceed as follows:

Removal

1.
Remove tie rod from steering arm as outlined in this

section.

2.
Remove front wheel, hub and brake drum as a unit

by removing hub cap and dust cap, cotter pin from

spindle nut and the spindle nut. Pull assembly to-

ward outside of vehicle. If removal is difficult, it

may be necessary to back off brake adjustment to

increase brake shoe-to-drum clearance; see Hy-

draulic Brake Adjustment, Section 5. On models

with disc brakes, remove caliper and disc.

3.
With wheel and drum assembly or caliper and disc

removed, steering arm retaining bolt heads are ac-

cessible and removal of steering arm from vehicle

may be accomplished by removing retaining nuts.

Installation

1.
Place steering arm in position on vehicle and install

retaining bolts*

2.
Install nuts. Use only the special locknut listed for

this use in the Chevrolet Parts Catalog.

3.
Pack wheel bearings using a high quality wheel

bearing lubricant. Install bearings and wheel-hub-

brake drum assembly removed previously. On disc

brake models, install disc and caliper.

4.
Install keyed washer and spindle nut. Proceed as out-

lined under t{ Front Wheel Bearing Adjustment" in

Section 3.

5.
Install tie rod ball stud in steering arm. Be sure that

the dust cover is in place on ball stud.

6. Install castellated nut on ball stud, tighten securely

and install cotter pin.

7.
Following directions given in Section 3 to check cor-

nering wheel relationship and toe-in; correct as

required.

STEERING DAMPER-CORVETTE

Removal

1.
Remove bolt from damper pivot bracket at relay rod.

2.
Remove nut from damper pivot at frame bracket and

withdraw damper assembly.

Damper is serviced as a unit. Replace damper if
3.

damaged or excessively worn.

Installation

1.
Place piston rod end into frame bracket and install

retainers, bushings, and nut.

2.
Insert cylinder end pivot into relay rod bracket and

install through bolt.

CHEVROLET CHASSIS SERVICE MANUAL

STEERING
9-33

POWER STEERING

INDEX

Page

General Description
. 9-33

Maintenance
and
Adjustments
9-33

Bleeding Hydraulic System
9-33

Fluid Level
. 9-33

Adjustments
. 9-34

Power Steering Gear
. . 9-34

Pump Belt Tension
9-34
Hydraulic System Checks
9-34

Component Replacement
and
Repairs
. 9-35

Power Steering Pump.
. 9-35

Power Steering Gear
9-36

Control Valve
and
Adapter Assembly
9.35

Power Cylinder
9.37

Power Steering Hoses
9.39

GENERAL DESCRIPTION

Two types
of
power steering
are
used
for 1967.
One
is

the conventional linkage type
for
Chevy
n and
Corvette

vehicles
and the
other
is the
integral gear type
for

Chevrolet, Chevelle,
and
Camaro.
For
both types
the

hydraulic pressure
is
provided
by an
engine-driven vane-

type pump.

On
the
Chevy
n and
Corvette linkage type power steer-

ing, hydraulic pressure
is
delivered through
a
hose from

the pump
to a
valve which senses
the
requirement
for

power assistance
and
supplies
the
power cylinder
ac-

cordingly.
The
steering gear used with this power steer-

ing
is the
same basic unit used
on
manually steered

vehicles;
it is
serviced
as
outlined
in the
manual steering

part
of
this section except
for
adjustment, which
is

covered
in the
following pages.
The
steering linkage also

is serviced the same
as
manual counterparts.

The Chevrolet, Chevelle
and
Camaro integral gear type

power steering
has the
hydraulic pressure delivered

from
the
pump through two hoses
to the
steering gear.
In
the power steering gear
the
steering shaft, hydraulic

valve, worm, and rack-piston
nut are all in
line making
a

compact
and
space saving assembly.
All oil
passages
are

internal within
the
gear except
the
pressure
and
return

hoses.

The steering gear
is a
recirculating ball system
in

which steel balls
act as a
rolling thread between
the

steering worm
and
rack-piston
nut. The
rack-piston
nut

is
all one
piece
and is
geared
to the
sector
of
the piston

shaft.
The
valve
is
contained
in the
gear housing elimi-

nating
the
need
of
bolts
or
seals
to
attach
a
separate

valve housing.

The valve
is an
open-center, rotary-type three
way

valve.
The
spool
is
held
in
neutral position by means
of a

torsion
bar. The
spool
is
attached
by
means
of
the stub

shaft
to one end of the
torsion
bar
and
to the
valve body

on
the
other
end.
Twisting
of the
torsion bar allows
the

spool
to
move
in
relation
to the
valve body thereby oper-

ating
the
valve.

MAINTENANCE
AND
ADJUSTMENTS

BLEEDING HYDRAULIC SYSTEM

1.
Fill
oil
reservoir
to
proper level and
let oil
remain

undistrubed
for at
least two minutes.

2.
Start engine
and run
only
for
about
two
seconds.

3.
Add
oil if
necessary.

4.
Repeat above procedure until
oil
level remains
con-

stant after running engine.

5. Raise front
end of
vehicle
so
that wheels
are off
the

ground.

6. Increase engine speed
to
approximately
1500 rpm.

7. Turn
the
wheels
(off
ground) right
and
left, lightly

contacting
the
wheel stops.

8. Add
oil if
necessary.

9. Lower
the car and
turn wheels right and left
on the

ground.

10.
Check
oil
level and refill
as
required.

11.
If oil is
extremely foamy, allow vehicle
to
stand
a

few minutes with engine
off and
repeat above

procedure.
,

a.
Check belt tightness
and
check
for a
bent
or
loose

pulley. (Pulley should
not
wobble with engine

running.)
b.
Check
to
make sure hoses
are not
touching
any

other parts
of the car,
particularly sheet metal.

c. Check
oil
level, filling
to
proper level
if
neces-

sary, following operations
1
through
10.
This

step
and
Step
"D" are
extremely important
as

low
oil
level and/or
air in the oil are the
most

frequent causes
of
objectionable pump noise.

d. Check
the
presence
of air in the oil. If air is

present, attempt
to
bleed system
as
described
in

operations
1
through
10. If it
becomes obvious

that
the
pump will
not
bleed after
a few
trials,

proceed
as
outlined under Hydraulic System

Checks.

FLUID
LEVEL

1.
Check
oil
level
in the
reservoir
by
checking
the dip

stick when
oil is at
operating temperature.
On

Chevelle models equipped with remote reservoir,

the reservoir should
be
maintained approximately

3/4 full when
oil is at
operating temperature.

2.
Fill,
if
necessary,
to
proper level with
GM
Power

Steering Fluid
or, if
this
is not
available, automatic

CHEVROLET CHASSIS SERVICE MANUAL

STEERING 9-34

Fig.
64-Over Center Adjustment

transmission fluid "Type A" bearing the mark

"AQ-ATF" followed by a number and the suffix

letter "A".

ADJUSTMENTS

POWER STEERING GEAR

Chevrolet, Chevelle, and Camaro

The over-center adjustment (fig. 64) is the only power

steering gear adjustment which can be made on the car.

However, in order to make this adjustment, it is also

necessary to check the combined ball and thrust bearing

preload.

If the vehicle is equipped with a tilt column it will be

necessary to disconnect the steering coupling to obtain a

torque reading of the column. This torque should then be

subtracted from any reading taken on the gear.

1.
Disconnect the pitman arm from the relay rod.

2.
Loosen the pitman shaft adjusting screw loeknut and

thread the adjusting screw out to the limit of its

travel through the side cover. '. •

3.
Disconnect steering column harness at chassis wir-

ing connector plug.

4.
Remove horn button.

5.
Turn the steering wheel through its full travel, then

locate the wheel at its center of travel.

6. Gheck the combined ball and thrust bearing preload

with an inch-pound torque wrench on the steering

shaft nut by rotating through the center of travel

(approximately 1/4 turn in each direction). Note the

highest reading.

7.
Tighten the pitman shaft adjusting screw and check

torque at steering shaft nut until over center preload

and total steering gear preload falls within speci-

fications. Refer to torque specifications at rear of

manual for correct torque values.

8. Install horn button. Connect steering column harness

at wiring connector plug.
Chevy II and Corvette

The steering gear used with power steering is adjusted

in the same manner as the manual steering gear.

PUMP BELT TENSION

1.
Loosen nut on pivot bolt and pump brace adjusting

nut.

CAUTION: Do not move pump by prying against

reservoir or by pulling on filler neck.

2.
Move pump, with belt in place until belt is tensioned

to specifications as indicated by Tool J-7316 (Fig-.

65).

3.
Tighten pump brace adjusting nut. Then tighten pivot

bolt nut.

HYDRAULIC SYSTEM CHECKS

The following procedure outlines methods to identify

and isolate power steering hydraulic circuit difficulties.

This test is divided into two parts. Test number one

provides means of determining whether power steering

system hydraulic parts are actually faulty. If test number

one results in readings indicating faulty hydraulic opera-

tion, test number two will identify the faulty part. Be-

fore performing hydraulic circuit test, carefully check

belt tension and condition of driving pulley. Strand

tension of belt should be 125 lbs. on new belts and 75 lbs.

on old belts, as indicated by Tool J-7316 (Fig. 65).

Test Number One—Oil Circuit Open

Engine must be at normal operating temperature. In-

flate front, tires to correct pressure. All tests are made

with engine idling, so adjust engine idle speed to correct

specifications listed in Section 6 and proceed as follows:

a. With engine not running, disconnect flexible pres-

sure line from pump and install Tool J-5176 as

Fig.
65— Checking Belt Tension with Tool J-7316

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