1967 CHEVROLET CAMARO oil pressure

CLUTCH AND TRANSMISSIONS 7-42

c. Converter
—•
leak in weld.

d. Pump tfO" ring seal — damaged. (Also check

pump groove and case bore.)

e. Porous casting (pump or case).

5. OIL COMES OUT VENT PIPE

a. Transmission over-filled.

b.
Water in oil.

c. Pump to case gasket mispositioned.

d. Foreign material between pump and case, or be-

tween pump cover and body.

e. Case — porous, pump face improperly machined.

f. Pump — shy of stock on mounting faces, porous

casting.

CASE POROSITY-REPAIR

Transmission leaks caused by aluminum case porosity

have been successfully repaired with the transmission in

the vehicle by using the following procedure.

1.
Road test and bring the transmission to operating

temperature.

2.
Raise the car and, with the engine running, locate the

source of the oil leak. Check for leaks in all operat-

ing positions.

NOTE:
The use of a mirror will be helpful in

finding leaks.

3.
Shut off engine and thoroughly clean area with a sol-

vent and air dry.

4.
Using the instruction of the manufacturer, mix a suf-

ficient amount of epoxy cement, part #1360016, to

make the repair.

5. While the transmission is still hot, apply the epoxy

to the area, making certain that the area is fully

covered.
6. Allow epoxy cement to dry for three hours and re-

test for leaks, as outlined in Steps 1 and 2.

OIL PRESSURE CHECK

With Car Stationary

Transmission oil pressure gauge and engine tachome-

ter should be connected and the oil pressures should

check as follows:

1.
Pressures indicated below are at 0 output speed with

the vacuum modulator tube disconnected and with en-

gine at 1200 rpm.

Approximate

Altitude of Check

(Ft. above sea level)

0

2,000

4,000

6,000

8,000

10,000

12,000

14,000
Drive

Neutral

Park

150

150

145

138

132

126

121

116
LI

or

L2

150

150

150

150'

150

150

150

150
Reverse

244

233

222

212

203

194

186

178

2.
Pressures indicated below are with the vacuum tube

connected for normal modulator operation, and with

the engine at 1200 rpm.

NOTE:
Pressures are not significantly affected

by altitude or barometric pressure when the

vacuum tube is connected.

Drive, Neutral, Park Ll or L2 Reverse

70 150 107

TURBO HYDRA-MATIC SHIFT POINTS

Engine

Throttle

Position

Closed

Detent

Touch

Thru

Detent
V327 (L30)

2.73 Axle - 8.25 - 14 Tire

•1-2 Up

7.7-11.5

36.4-50.1
2-1 Dn

10.9-6.9

74.8-91.4
2-3 Up

17.5-22.6

85.1-67.6
3-2 Dn

19.5-14.6

43.3-26.6
Chevrolet Models
(MPH)

V396 (L35)

2.73 Axle - 8.25 - 14 Tire

1-2 Up

8.0-12.9

38.4-55.9
2-1 Dn

10.3-4.3

45.6-25.2
2-3 Up

17.2-27.8

/

74.8-91.7
3-2 Dn

18.3-12.6

83.7-65.0
V427 (L36)

2.73 Axle - 8.25 - 14 Tire

1-2 Up

8.6-12,6

44.1-58.5
2-1 Dn

1-1.7-6.6

45.8-27.2
2-3 Up

17.5-30.7

81.1-99.4
3-2 Dn

18.9-14.3

92.6-73.4

Chevelle Models (MPH)

Throttle

Position

Closed

Detent

Touch

Thru

Detent
V396(L34)

3.07 Axle - F70 - 14 Tire

1-2 Up

7.4-10.9

38.1-50.4
2-1 Dn

9.6-5.7

39.5-23.5
2-3 Up

15.1-26.4

69.9-85.7
3-2 Dn

16.3-12.4

79.8-63.3

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-45

23

Fig.
5T - Aluminum Powerglide Special Tools

1. J-9506

2.
J-3289-01

3.
J-9549

4.
J-21867

5.
J-4264

6. J-3387

7.
J-9539

8. J-6839

9. J-9546

10.
J-7782

11.
J-5133

12.
J-4599

13.
J-9542

14.
J-9557
Holding Fixture Adapters

Holding Fixture (Use with J-3289-20 Base)

Converter Safety Strap

Transmission Pressure Gauge and Hose

Oil Filler Tube and Funnel

Pilot Stud Set

Front Pump Puller Bolts (Use with weights

from Slide Hammers J-6585)

Front Pump Seal Driver

Clutch Drum Bushing Remover and Installer

Clutch Spring Compressor Adapter Plate

Clutch Spring Compressor

Planet Pinion Assembly Tool Set

Reverse Piston Spring Compressor

Transmission Case Rear Bushing Remover and

Installer and Rear Pump Bushing Remover
15.
J-7079

16.
J-6582

17.
J-9543

18.
J-5778

19.
J-5154

20.
J-5403

21.
J-5814

22.
J-5853

23.
J-8039

24.
J-21848

J-8001

J-5492

J-6585

J-6585-3

J-9534
Handle

Rear Pump Bushing Installer

Vacuum
Modu
lator Wrench

Extension Bushing Remover and Installer

Extension Oil Seal Installer

Snap Ring Pliers

Speedometer Drive Gear Remover and

Installer

Torque Wrench

Snap Ring Pliers

Low Band Adjusting Tool

Dial Indicator (Not Illustrated)

Dial Indicator Support Strap (Not Illustrated)

Slide Hammers (Not Illustrated)

Slide Hammer Adapters (Not Illustrated)

Bushing Remover (Not Illustrated)

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-46

17 18 19 20 21 22

Fig.
6T - Turbo Hydra-Matic Special Tools

1.
J-6116-01

2.
J-8092

3. J-21359

4.
J-21364

5. J-2619

6. J-5154

7. J-6585

8. J-9539

9.
J-5590

10.
J-21867

11.
J-21370-6

12.
J-21370-5

13.
J-21795-1

14.
J-21795-2
Rear Unit Holding Fixture

Driver Handle

Pump Oil Seal Installer

Holding Fixture Adapter (Used with

J-6116-01 Fixture)

Slide Hammer (Used with 2619-4 Adapter and

Remover Tools J-21465-01)

Extension Oil Seal Installer

Slide Hammer Weights

Slide Hammer Bolts (3/8 - 16 Threads)

Speedo Gear Installer

Pressure Gauge and Hose

Rear Band Apply Fixture

Rear Band Apply Pin

Gear Unit Assembly Holding Tool

Part of Above Holding Tool
]5. J-5384

16.
J-21465-01

17.
J-21465-5

18.
J-21465-3

19.
J-21465-2

20.
J-21465-1

21.
J-21465-17

22.
J-21465-8

23.
J-21465-13

24.
J-2.1465-6

25.
J-21465-15

26.
J-21465-16

27.
J-21465-9

28.
J-21465-10

29.
J-22182
Converter Holding Strap

Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Part of Bushing Tool Set

Extension Bushing Remover &

Installer (Not Illustrated)

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

WHEELS AND TIRES 10-4

the road and it slips, grinding off the tread on the inside

half of the tire at an excessive rate. This type of tire

shows much the same appearance of tread wear as tire

wear caused by negative camber.

Second, the transfer of weight may also over-load the

outside tires so much that they are laterally distorted

resulting in excessive wear on the outside half of the

tire producing a type of wear like that caused by ex-

cessive positive camber.

Cornering wear can be most easily distinguished from

abnormal camber wear by the rounding of the outside

shoulder or edge of the tire and by the roughening of the

tread surface which denotes abrasion.

Cornering wear often produces a fin or raised portion

along the inside edge of each row in the tread pattern.

In some cases this fin is almost as pronounced as a

toe-in fin, and in others, it tapers into a row of tread

blocks to such an extent that the tire has a definite step

wear appearance.

The only remedy for cornering wear is proper in-

struction of owners.

Fig.
5 - Tire Rotatidh

Rotation

To minimize the possibility of tire noise and to equal-

ize tire wear, it is recommended that tires be inter-

changed every 6000 miles as shown in Figure 5 or more

frequently in the case of extremely heavy wear.

NOTE:
Rotate Corvette tires at 4000 miles or

sooner.

Interchanging tires will effectively prevent undue wear

on any particular tire. II tire interchanging is followed

as recommended above, all tires will have the same

number of miles in each wheel position at the end of the

fourth change. When interchanging tires, inspect for

signs of abnormal wear, bulging, etc., stones, glass, and

nails should be removed before reinstallation.

Noise

Noise caused by the normal action of tire treads on

various road surfaces is often confused with rear axle
gears or other noises in the car.

The determination of whether tires are causing the

noise complained of is relatively simple. The car should

be driven at various speeds and note taken of part

throttle, and sudden acceleration and deceleration. Axle

and exhaust noises show definite variations under these

conditions, while tire noise will remain constant. Tire

noise is, however, most pronounced at speeds of approx-

imately twenty or thirty miles per hour.

The tires may be further checked by driving the ear

over smooth pavement with the tires at normal pressure

and again over the same stretch of pavement when the

tires have been inflated to fifty pounds pressure. Reduce

the tires to normal pressure one at a time to determine

the faulty tire or tires. This high inflation pressure

should immediately be reduced to normal after test. If

the noise for which the test is being made is caused by

tires,.
it will noticeably decrease when the tire pressure

is increased, whereas axle noise should show no change

in volume.

If, on inspection, the tires on the front wheels are

found to be creating most of the noise the alignment of

the front wheels should be checked. Excessive tire noise

usually results from lower than recommended tire pres-

sure, incorrect alignment, uneven tire wear, or defective

(thumper) tire.

Cleaning

A great deal of ordinary road dirt which collects on

white sidewall tires may be sponged off with clear water

or a mild soap solution.

A good brand of whitewall tire cleaner, however, is

a quicker and more effective cleaner for removing dirt

and stains from whitewall tires and in many cases it

will remove stains and discoloration that the simpler

method of soap and water will not remove.

Under no circumstances should gasoline, kerosene or

any cleaning fluid containing a solvent derived from oil

be used to clean whitewall tires. Oil in any form is

detrimental to tire rubber and a cleaner with an oil base

will discolor or injure whitewall tires.

Change (W/Wheels)

To change the road wheels using the jack that comes

with the car, observe the following procedure:

1.
Set hand brake and block front wheels if rear wheel

is being changed.

2.
Remove hub cap or wheel disc and break wheel

mounting nuts loose.

3.
Place the jack as directed tinder, General Informa-

tion,
Section 0 and raise car until wheel clears

ground.

4.
Remove wheel mounting nuts and remove wheel from

hub or drum.

5. To replace road wheel, reverse the above instrue-

. tions. Proper torque on nuts is 55-75 ft. lbs.

torque (70-85 ft. lbs. for Corvette aluminum wheel

nuts).

CAUTION: On models equipped with discs, in-

dex the pilot hole in the disc on the valve stem.

(To insure that the anti-rotation notches in wheel

disc register on lugs in wheel rim.)

CHEVROLET CHASSIS SERVICE MANUAL

WHEELS AND TIRES
10-6

lifted on the rim to force the top tire bead

against the top rim flange. The weight of the

tire will seat the bottom bead.

Repair

When a tire loses all or most of its air pressure,

particularly when driving at high legal speeds on today1 s

super-highways, recommended procedure is to remove it

from the wheel for complete inspection to be sure no

tire damage has occurred. Punctured tires should be

removed from the wheel and permanently repaired from

the inside.

Externally applied plug type repairs should be con-?

sidered temporary and the tire should be permanently

repaired as soon as possible.

Hot Patch Method

It is essential to thoroughly clean and remove all

foreign matter from the hole left by the puncturing-object

without enlarging the injury and then follow the manu-

facturer's instructions for vulcanizing the patch.

Rubber Plug Methods

There are several types of rubber plugs--some are

inserted from the inside of the tire; others are inserted

from the outside of the tire without demounting the tire

from the rim.

When using the plug method be sure to clean and

lubricate the hole with repair cement before inserting

the plug. Your tire supplier has available complete kits

containing materials, tools and detailed instructions for

making repairs with plugs. Follow instructions in the kit

you use.

Cold Patch Method

(Self Vulcanizing Type)

In this method it is essential to thoroughly clean and

remove all foreign matter from the hole left by the

puncturing object without enlarging the injury; also on

the inside of the tire, buff an area large enough for the

patch. Follow the manufacturer1 s instructions for appli-

cation of the special cement and self-vulcanizing cold

patch.
Pressure Gun Method

Several types of pressure guns are available. Consult

your tire supplier for materials and instructions.

Tire Installation Safety Precautions

When tires are mounted on dirty or corroded rims, or

when they are not properly centered on rims, the tire

bead may "bind" on the rim, and refuse to seat. Allowing

pressure to continue to build up within the assembly in

an attempt to seat the tire bead is a DANGEROUS PRAC-

TICE which can result in a broken tire bead, and serious

injury to the serviceman.

1.
Make sure that rim flanges and bead ledge (espe-

cially hump and radius) areas are smooth and clean.

Remove any oxidized rubber, dried soap solution,

rust, heavy paint, etc. with a wire brush, or, in ex-

treme cases, a file.

2.
Lubricate tire beads, rim flanges, and bead ledge

areas with a liberal amount of thin vegetable oil

soap solution, or approved rubber lubricant,

3.
Insure that air pressure build-up during the bead

seating process is not allowed to exceed 40 pounds

pressure. If beads have not seated by the time pres-

sure reaches 40 pounds, assembly should be deflated,

re-positioned on rim, re-lubricated and re-inflated.

4.
Make sure valve core is inserted in valve stem

prior to inflating.

5.
Use an extension gauge with clip on chuck so air

pressure build-up can be closely watched and so

that you can stand well back from the assembly

during the bead seating process.

WHEELS

Valve Assembly

Replace

NOTE: Always use new valve assembly when

replacing.

1.
Cut or drive old valve assembly out of rim.

2.
Clean valve hole and surrounding area on inside of

flange with steel wool.

Fig. 6 - Installing Valve
Fig. 7 - Rim Inspection

CHEVROLET CHASSIS SERVICE MANUAL