Page 1
1601 J. P. Hennessy Drive, LaVergne, TN USA 37086-3565 615/641-7533 800/688-6359 Manual Part No.: 8183762 00
HENNESSY INDUSTRIES INC. Manufacturer of AMMCO
®
, COATS®and BADA®Automotive Service Equipment and Tools. Revision: 09/98
Safety Instructions
Operating Instructions
Installation Instructions
Maintenance Instructions
READ these instructions before placing unit in
service. KEEP these and other materials delivered
with the unit in a binder near the machine for
ease of reference by supervisors and operators.
®
7660 AX/EX
7665 AX/EX
Rim Clamp
®
Tire Changer
For servicing single piece
automotive and most light
truck tire/wheel assemblies
Page 2
Table of Contents
Definitions of Hazard Levels ................................1
Owner’s Responsibility ........................................1
Principal Operating Parts .....................................2
Operating Instructions .........................................3
Bead Loosening and Demounting ....................3
Mounting ...........................................................6
Inflation ..................................................................7
Bead Sealing ....................................................7
Bead Seating ....................................................8
Inflation .............................................................8
Performance, Custom, and Aluminum Wheels ..9
Aluminum and Custom Wheels ........................9
Performance Tires and Wheels • Demounting .9
Performance Tires and Wheels • Mounting ....11
Custom and Special Wheels ..............................12
Tube Type Tires ..................................................12
Stages of Inflation ...............................................13
Bead Seal .......................................................13
Bead Seat .......................................................13
Inflation ...........................................................13
Mis-Matched Tires and Wheels ..........................13
Maintenance Instructions ...................................14
Installation Instructions .....................................15
Critical Safety Instructions .................Back Cover
Operator Protective Equipment
Personal protective equipment helps make tire
changing safer. However, equipment does not take
the place of safe operating practices. Always wear
durable work clothing during tire service activity.
Shop aprons or shop coats may also be worn, however loose fitting clothing should be avoided. Tight
fitting leather gloves are recommended to protect
operator’s hands when handling worn tires and
wheels. Sturdy leather work shoes with steel toes
and oil resistant soles should be used by tire service personnel to help prevent injury in typical shop
activities. Eye protection is essential during tire service activity. Safety glasses with side shields, goggles, or face shields are acceptable. Back belts
provide support during lifting activities and are also
helpful in providing operator protection.
Consideration should also be given to the use of
hearing protection if tire service activity is performed in an enclosed area, or if noise levels are
high.
Failure to follow danger,
warning, and caution
instructions may lead to
serious personal injury or death to operator or
bystander or damage to property. Do not operate this machine until you read and understand
all the dangers, warnings and cautions in this
manual. Download a copy of the manual from
our website at www.ammcoats.com, or for further information, contact:
Hennessy Industries, Inc.
1601 J.P. Hennessy Drive
LaVergne, TN 37086-3565
(615) 641-7533 or (800) 688-6359
www.ammcoats.com
WARNING
For additonal tire, wheel, and/or inflation information
contact the following:
RUBBER MANUFACTURERS ASSOCIATION
1400 K Street N.W.
Washington, DC 20005
(202) 682-4800
www.rma.com
TIRE GUIDES, INC.
The Tire Information Center
1101-6 South Rogers Circle
Boca Raton, FL 33487-2795
(561) 997-9229
www.tireguides.com
Page 3
Definitions of Hazard Levels
Identify the hazard levels used in this manual with
the following definitions and signal words:
DANGER
Watch for this symbol:
It Means: Immediate hazards which will result in
severe personal injury or death.
WARNING
Watch for this symbol:
It Means: Hazards or unsafe practices which could
result in severe personal injury or death.
CAUTION
Watch for this symbol:
It Means: Hazards or unsafe practices which may
result in minor personal injury or product or property
damage.
Watch for this symbol! It means BE ALERT!
Your safety, or the safety of others, is involved!
Owner’s Responsibility
To maintain machine and user safety, the
responsibility of the owner is to read and follow these instructions:
• Follow all installation instructions.
• Make sure installation conforms to all
applicable Local, State, and Federal
Codes, Rules, and Regulations; such as
State and Federal OSHA Regulations and
Electrical Codes.
• Carefully check the unit for correct initial
function.
• Read and follow the safety instructions.
Keep them readily available for machine
operators.
• Make certain all operators are properly
trained, know how to safely and correctly
operate the unit, and are properly supervised.
• Allow unit operation only with all parts in
place and operating safely.
• Carefully inspect the unit on a regular
basis and perform all maintenance as
required.
• Service and maintain the unit only with
authorized or approved replacement
parts.
• Keep all instructions permanently with the
unit and all decals on the unit clean and
visible.
DANGER
CAUTION
WARNING
Explosion Hazard
Never inflate
tire above
manufacturer's recommended pressure
after bead is seated.
DANGER
DANGER
Explosion Hazard
Never exceed 40 PSI
while seating beads.
7650/7655AX/EX Rim Clamp Tire Changer •
1
Page 4
Principal Operating Parts
Know Your Unit
Compare this illustration with the unit before placing
it into service. Maximum performance and safety will
be obtained only when all persons using the unit are
fully trained in its parts and operation. Each user
should learn the function and location of all controls.
Prevent accidents and injuries by ensuring the unit is
properly installed, operated, and maintained.
Inflation Guard — Tubular structure to help
protect operator from physical danger during
inflation process.
Inflation Control Panel — Inflation of tire is controlled by these two levers. Both levers must be
actuated from behind the barrier tubes to inflate tire.
Inflation Pedal — Three position pedal that
allows inflation of tires through air hose and clip-
on chuck.
Clamp Control Pedal — Three position pedal
that opens and closes rim clamps.
Table Top Pedal — Three position pedal that
controls rotation of table top.
Bead Loosener Shoe — Pivoting shoe for
loosening tire beads.
Bead Loosener Handle/Button — Controls
operation of bead loosener shoe.
Combination Mount/Demount Head —
Mounts and demounts tire from wheel.
Swing Arm Adjustment Knob — Adjusts
swing arm/vertical slide assembly for proper
horizontal positioning of mount/demount head.
Air Inflation Gauge — Registers tire pressure
when clip-on chuck is attached to valve stem
and inflation petal is released.
Release Valve — Allows the manual release of
air pressure from tire.
Robotic Arm Control Valve — Controls
Vertical Movement of Robotic Arm Cylinder.
Table Top — Rotating chuck for tire changing.
Clamps — Secures wheel to table top for tire
changing.
Bead Sealing Nozzles — Expands tire sidewall to bead seat area of rim to seal and allow
inflation.
Lube Bottle
— Dispenser for rubber lubricant.
Oil Check Dipstick — For transmission oil
level.
Bead Lifting Tool — Used to lift and position
tire bead correctly on mount/demount head.
Pressure Safety Valve — The high pressure
safety valve is set to exhaust at line pressures
above 185 PSI.
Vertical Slide Locking Handle — Locks and
unlocks vertical slide and sets correct vertical
position to maintain head/wheel clearance.
Bead Roller Tool — Used to apply pressure
against sidewall of tire.
2
• 7660/7665AX/EX Rim Clamp Tire Changer
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6
5
4
3
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10
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14
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17
18
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2
3
4
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Page 5
OPERATING INSTRUCTIONS
The unit must be properly operated and properly
maintained to help avoid accidents that could damage the unit and injure the operator or bystanders.
This section of the Operating Instructions manual
review basic operations and use of controls. These
instructions should be reviewed with all employees
before they are allowed to work with the machine.
Keep these instructions near the machine for easy
reference.
BEAD LOOSENING AND DEMOUNTING
This machine may operate
differently from machines
you have previously operated. Practice with a regular steel wheel and tire
combination to familiarize yourself with the
machine’s operation and function.
A. Remember to remove all weights from both sides
of the wheel. Weights left on back side of wheel may
cause the wheel to be clamped unlevel. This may
result in the combination mount/demount head contacting the rim causing scratches. On alloy wheels,
always rotate the wheel one turn after setting the
head to insure proper wheel chucking.
B. Always review nicks and scratches with owners of
expensive wheel and tire combinations prior to servicing.
C. Review the performance wheel section of this
manual prior to servicing performance tire/wheel
combinations.
1. Deflate tire completely by removing the valve
core from the valve stem (Figure 1).
Figure 1 – Remove Valve Core to Deflate Tire
NOTE: Loosening the beads on a partially or
fully inflated tire is unsafe and causes excess movement and friction against the bumper pads and
excessive wear on pivots. Deflate the tire completely
to prolong the life of your machine.
D. Always loosen the bead on the narrow side of the
wheel’s drop center first. See Figure 4 for more
information on the drop center.
E. The clamps on the table top may extend beyond
the table top itself. To avoid damaging the clamps,
move them to their full inward position before positioning a tire for bead loosening.
F. Use extra care in positioning the bead loosener
shoe on larger wheels/tires, and on alloy wheels.
Make sure the shoe rests next to but not on the rim,
and not on the tire sidewall.
2. Pull the bead loosener shoe away from the
machine and roll wheel into position. The valve
stem should be in the 2 o’clock position.
Position the bead loosener shoe against the tire
next to, but not on, the rim. Press the button on
the bead loosener shoe handle to actuate the
shoe and loosen the bead. It may be necessary
to loosen the bead in multiple locations around
the tire (Figure 2).
Figure 2 – Position Tire and Bead Loosener Shoe
3. Turn wheel around and repeat loosening procedure on the other side of the wheel. This
should be the long side of the drop center (see
Figure 4).
G. It will be easier to clamp the wheel to the table
top if the lower bead is loosened last.
4. Apply tire manufacturer’s approved rubber lubricant liberally to entire circumference of both tire
beads after loosening (Figure 3).
Figure 3 – Apply Rubber Lubricant to Tire Beads
7660/7665AX/EX Rim Clamp Tire Changer •
3
CAUTION
Valve Stem
Page 6
5. Determine the mounting side of the wheel. The
mounting side is the narrow side of the drop
center. (Tire removed in Figure 4 for clarity.)
Figure 4 – Determining Mounting Side of Wheel
6. Place tire/wheel assembly on table top with
mounting side up (Figure 5). Use the clamp control pedal to move the clamps inward (push
pedal down) or outward (toggle pedal up).
Clamp steel wheels from the inside (clamps
push outward against wheel). Clamp mag and
custom wheels from the outside (clamps push
inward against the outside rim edge). Refer to
the Performance Tires and Wheels section.
Figure 5 – Place Tire/Wheel Assembly on Table Top
7. Move the swing arm into position. Pull the locking handle forward to release the slide. Push
down on the top of the vertical slide to move
the demount head into contact with the rim
edge. Push locking handle back to lock slide
into place. As the slide is locked, the mount/demount head will move upward approximately
1/8 inch from rim edge (Figure 6).
Figure 6 - Position
Mount/Demount Tool
8. The mount /
demount head roller
should be in contact
with the rim edge.
Turn the swing arm
adjusting knob to
move the roller away
from the rim 1/8 to 1/4
inch (Figure 7).
Figure 7 - Adjust Swing Arm to Position Head Roller
9. Check metal head positioning. Mount/demount
metal head should be positioned with 1/8 to 3/16
inch clearance between the top of the rim edge
and the bottom of the head, and 1/8 to 1/4 inch
clearance between the rim edge and the head
roller. This clearance will be maintained as long
as the locking handle and adjustment knob are
not changed. The operator may swing the arm
out of the way and back into place again without
needing to reposition the head (when changing
a like set of wheels) (Figure 8).
Figure 8 - Proper (Metal) Mount/Demount Head Position
10. Check plastic head positioning. Mount/demount
plastic head should be positioned with 1/16 to
1/8 inch clearance between the top of the rim
edge and the bottom of the head, and 1/16 to
1/8 inch clearance between the rim edge and
the inside surface of the head. This clearance
will be maintained as long as the locking handle
and adjustment knob are not changed. The
operator may swing the arm out of the way and
back into place again
without needing to
reposition the head
when changing a like
set of wheels (Figure
9).
Figure 9 - Proper (Plastic)
Mount/Demount Head
Position
Narrow Side
Long Side
Drop Center
1/8" to 1/4"
3/16" to 1/8"
1/16" to 1/8"
1/16" to 1/8"
4
• 7050/7055/7060/7065 AX/EX Rim Clamp Tire Changer
Page 7
H. The vertical tool clearance may change with
machine use and should be inspected often. Failure
to maintain the proper clearance may result in damage to the wheel rim and/or tire.
Figure 10 - Insert Bead Lifting Tool
11. Insert the smooth curved end of the bead lifting
tool over the forward end of the demount head
and below the top bead of the tire. Use your free
hand to press down on the tire opposite the head
to help with tool insertion (Figure 10).
Figure 11 - Lift Bead Over Demount Head
12. Push the bead lifting tool down towards the
wheel to lift the tire bead up and over the knob
portion of the demount head. Hold the tool and
bead in this position (Figure 11).
13. Depress the table top pedal to rotate the wheel
clockwise. The demount head will guide the
upper bead up and over the edge of the wheel.
J. Push down on the tire across from demount head
during table top rotation to utilize the drop center
area of the wheel. This reduces the tensional force
on the top or first bead during demount (Figure 10).
Figure 12 - Demounting Lower Bead
14. Lift and hold the tire at an angle so that the lower
bead is resting in the drop center directly across
from the demount head, and is loose below the
demount head (Figure 12). Insert the smooth
curved end of the bead lifting tool down over the
forward end of the mount/demount tool and
below the lower bead. Lift the bead up and over
the knob on the demount head (Figure 13).
Figure 13 - Guide Lower Bead Over Tool Head
15. Depress the table top pedal to rotate the wheel.
The demount head will guide the bead up and
over the edge of the wheel. Continue rotation
until lower bead is demounted.
K. With tube-type tires, demount the upper bead and
remove the tube before demounting the lower bead.
L. Table top rotation can be stopped at any time by
removing your foot from the rotation pedal.
M. Normal table top rotation for demounting is clockwise. Depress the table top pedal to rotate this direction. To rotate the table top counterclockwise, lift the
pedal up with your toe.
At times during the mounting and demounting proce-
dure, the bead lifting tool
may encounter resistance or come under load.
Keep one hand firmly on the tool to avoid possible
tool disconnect. Use the reversing feature to back
out of jam ups.
After successfully completing the demount
process, proceed to Mounting (page 6).
CAUTION
✓
77050/7055/7060/7065 X/EX Rim Clamp Tire Changer •
5
Page 8
MOUNTING
This information must be read and followed carefully
to prevent accidents and injuries during mounting.
Check tire and wheel
carefully before mounting.
Make sure the tire bead
diameter and wheel diameter match exactly.
Consult the
Rubber Manufacturer's Association
for approved rim widths for tire sizes.
Attempts to force a bead
seat on mis-matched tires
and wheels can cause the
tire to violently explode, causing serious personal injury or death to operator and/or bystanders.
Never mount a tire and
wheel handed to you by
anyone without checking
both tire and wheel for damage and compatibility. Be extra cautious of persons without knowledge of tire service. Keep by-standers out of service area.
Never mount a damaged
tire. Never mount a tire on
a rusty or damaged wheel.
Damaged tires and/or wheels may explode.
If you damage the tire bead
during mounting, STOP!,
remove the tire and mark it
as damaged. Do not mount a damaged tire.
1. Inspect the wheel closely for damage. Clean the
wheel and remove any light corrosion or rubber
residue (Figure 14). Do not attempt to service
heavily corroded wheels.
Figure 14 - Inspect and Clean the Wheel
2. Inspect tire for damage, paying close attention
to the beads. Verify size match between tire and
wheel (Figure 14).
3. Lubricate tire beads liberally with tire manufac-
turer’s approved lubricant (Figure 15).
Figure 15 - Lubricate Beads
4. Place tire over wheel and move swing arm into
position making sure the value stem is at the 6
o’clock position. Position tire so that the lower bead
is above the rear extension of the mount/demount
head and below the front knob (Figure 16).
Figure 16 - Position Tire Against Mount/Demount Head
5. Depress table top pedal and rotate the wheel to
mount the lower bead. Use the drop center of
the wheel to reduce the tensional force on the
bead by pressing down on the tire directly
across from the mount head. Rotate table top
until lower bead is fully mounted.
Figure 17 - Mounting Top Bead
6. For top bead, rotate the table top until the valve
stem is at the 6 o’clock position . Lift the upper
bead up and over the rear of the mount head.
With your left hand press down on the tire
between the mount head and the valve stem to
hold the tire in the drop center. Depress table
top pedal and rotate tire until the bead is mounted. Continue to press down on tire during the
remaining mounting process (Figure 17).
Do not force the tire onto
the rim. Bead damage
could result making the
tire unsafe and/or creating the risk of injury.
N. If table top rotation stalls, reverse the table top
momentarily until the tire bead is again loose on the
wheel. Reposition the tire on the mount head, make
sure the bead is correctly positioned in the drop center of the wheel, then attempt mounting again.
P. For low profile or stiff sidewall tires, use the
helper tool to initially hold the upper bead down in
the drop center, as shown in Figure 33, page 11.
R. For tube type tires, mount the lower bead first,
move swing arm out, install the tube, and then
mount the upper bead.
6
• 7660/7665AX/EX Rim Clamp Tire Changer
WARNING
CAUTION
WARNING
CAUTION
WARNING
DANGER
Page 9
INFLATION
Tire inflation is performed in three steps: bead seal,
bead seat, and inflation. These steps are explained
in detail on page 13. Read the explanation of each
step and understand them thoroughly before proceeding.
Check for proper inflation
gauge operation. Accurate
pressure readings are
important to safe tire inflation. Refer to the
Operating Maintenance section of this manual for
instructions.
If the rim has been
clamped from the outside
for tire mounting, release
the clamps, lift the tire, and move the clamps to
the center of the table top.
If the wheel/tire has a
diameter larger than 14
inches and is difficult to
bead seal, the clamps should be moved to the
center of the table top for the bead seal operation.
Tire failure under pressure is hazardous. This
tire changer is not intended to be a safety device to contain exploding
tires, tubes, wheels, or supplemental bead sealing equipment that may be attached to the
tire/wheel assembly. Inspect tire and wheel carefully for match, wear, or defects before mounting. Always use approved tire bead lubricant
during mounting and inflation.
The inflation pedal, located at the
rear of the left side of the machine,
controls the flow of air through the
bead sealing jets and the inflation
hose to achieve bead seal.
The bead seating/inflation hand
control valves are located on the
back side of the Inflation Guard.
These valves control
air pressure flow
through the inflation
hose.
NOTE: The clip-on
chuck on the end
of the hose should
always be an open
style with all parts in proper working order. On
open style chuck is on that allows air flow when
not attached to a valve, and will flow air when
the foot valve or hand valves are actuated.
Use the bead seal pedal
for bead sealing only. Do
not use this control to
bead seat or inflate the tire. Inflating the tire with
this feature bypasses the pressure liminting features and could lead to over inflation and possible tire explosion. Do not use this pedal without
a tire and wheel positioned on the table top. Dirt
and debris could be blown into the air with
enough force to injure the operator or
bystanders.
S. The unit is equipped with a pressure limiter to
assist the operator with proper tire inflation. When
the inflation valves are pushed open simultaneously
and held, the pressure limiter cycles the air flow on
and off, checking the tire pressure during the off
cycle. This cycling helps to prevent over inflation of
the tire. Tires can still be over inflated and explode
with the use of this pressure limiter if all of the
instructions in this manual are not followed completely. The pressure limiter will keep most car and
light truck tires from inflating beyond 60 PSI (smaller
tires may reach higher pressures). It is the operator's responsibility to follow all instructions and to
control inflation pressure as specified in these
instructions. Check the function of the pressure limiter regularly and maintain it according to the instructions provided in this manual for safe and proper
operation. Do not tamper with or attempt to adjust
the pressure limiter. Tires requiring inflation beyond
60 PSI should be inflated in an inflation
chamber/safety cage, or securely mounted on the
vehicle if such a device is not available.
Bead Sealing
1. Position valve stem in front of operator and con-
nect the inflation hose. Hold tire up against
upper edge of the wheel. Be sure tire’s top bead
is over the bottom of the valve stem (Figure 18).
Figure 18 - Lift Tire Upwards for Bead Sealing
2. Depress the bead seal pedal and hold for about
2 seconds. The blast of air from the jets will
expand the tire and seal the beads to the rim.
3. Release the bead seal pedal. Verify that both
beads are completely sealed to the wheel. Repeat
these steps if beads have not sealed. It may be
necessary to wait a few seconds for the air storage tank to recover before attempting again.
Bead Sealing
7660/7665AX/EX Rim Clamp Tire Changer •
7
CAUTION
CAUTION
CAUTION
DANGER
CAUTION
Page 10
Explosion Hazard
Never inflate
tire above
manufacturer's recommended pressure
after bead is seated.
T. If tire and wheel are properly lubricated and operator cannot achieve bead seal after 3 or 4 attempts,
the valve core may be removed from the valve stem
to allow more air flow into the tire to assist with bead
seal. After bead seal is achieved, remove the chuck
and reinstall the valve core.
Bead Seating
Operator should always stand
behind Inflation Guard and keep
hands, arms, and entire body
away from the tire during the remaining bead seat and inflation procedures. Do not permit anyone to stand over the tire
as personal injury could result.
Operating a tire changer with a
defective, improperly adjusted,
or by-passed pressure limiter
could cause an operator to accidentally over-pressurize a
tire, resulting in a tire explosion with severe injury or death
to the operator or bystanders. Always be sure that the pressure limiter is present and is operating properly on the
machine at all times.
NEVER increase air pressure to
exceed 40 PSI when attempting
bead seat. If operator is unable
to obtain bead seat, something is wrong. Deflate tire completely, inspect the tire and wheel for defects and make sure
that the tire and wheel size match. Correct any problems
found, relubricate both tire beads, and reattempt bead seal
and seating procedures.
1. Once the tire is sealed to the rim, move to the
area behind the Inflation Guard and push the
inflation valves simultaneously. Both valves
must be actuated to inject air into the tire.
Continue to inject air into the tire in short intervals, checking the pressure frequently. Stand
behind Inflation Gaurd during bead seat. Keep
hands, arms, and entire body away from tire
during this procedure.
Tire beads should move outward and "pop" into
their bead seat position as pressure inside the
tire increases. If this does not happen, a problem exists. Investigate carefully for defects and
make sure the tire and wheel sizes match.
Check tire pressure frequently.
Never exceed 40 PSI while seat-
ing beads. Once seated, never
exceed tire manufacturer's recommended air pressure. Tires
can explode, especially if they are inflated beyond their limits. At all pressure levels when inflating through the valve
stem, stay behind the Inflation Guard and keep hands, arms,
and entire body away from inflating tire. An exploding tire,
wheel, or bead sealing equipment may propel upward and
outward with sufficient force to cause serious injury or death
to operator or bystander.
Inflation
NEVER exceed tire manufactur-
er's recommended air pressure.
Tires can explode, especially if
inflated beyond these limits. Stay behind Inflation Guard and
keep hands, arms, and entire body back from inflating tire.
Avoid distraction during inflation. Check tire pressure frequently to avoid over inflation. Excessive pressure can
cause tires to explode, causing serious injury or death to
operator or bystander.
1. Make sure both beads are seated. When both
beads are seated, the tire is ready for inflation.
2. Replace the valve core if it was removed.
3. Depress inflation valves simultaneously and
hold to inflate tire. Pressure limiter will cycle the
air flow as described earlier. On most passenger
car tires, the pressure limiter will cease air flow
at approximately 60 PSI. On smaller volume
tires the pressure may be higher.
U. Release air pressure from tire by pressing the
manual release valve button (inflation hose must be
attached to the valve stem, Figure 19).
8
• 7660/7665AX/EX Rim Clamp Tire Changer
DANGER
DANGER
Explosion Hazard
Never exceed 40 PSI
while seating beads.
WARNING
WARNING
DANGER
DANGER
DANGER
IMPORTANT: When inflating tires that require more than 60 PSI, always use a safety cage and an air hose with
a clip-on air chuck and an in-line valve. The hose must have enough length between the chuck and the operator/in-line valve to allow the operator to stand outside the trajectory.
Page 11
Figure 19 - Location of Manual Release Valve
PERFORMANCE, CUSTOM, AND ALUMINUM WHEELS
Only tire technicians with
experience and training
on custom wheels should
attempt to service expensive custom alloy or
aluminum wheels and high-performance lowprofile tires.
Pre-Operation Notes:
• Ensure all weights have been removed.
• Clamp wheel from the outside.
• Use ample lubricant for mount and demounting
• Always review wheel nicks and/or scratches
with the owner before servicing.
Performance Tires and Wheels • Demounting
Follow these instructions for performance type tires
and wheels, including run-flat tires and their associated wheels, and asymmetrical hump wheels.
1. Remove valve core and completely deflate tire.
2. Pull the bead loosener shoe away from the
machine and roll the tire into position against the
bumper pads. Position the tire with the valve
stem in the 2 o'clock position (in direct line with
the bead loosener shoe). Always loosen the
bead on the narrow/mounting side of the wheel
first (Figures 4 and 20).
Figure 20 - Position Tire for Bead Loosening
AA: Wheels with an asymmetrical hump have a
larger “ledge” type hump around the wheel except
at the valve hole making them more difficult to
mount and demount (Figure 21). Always loosen the
beads near the valve stem on both sides of rim.
Figure 21 - Asymmetrical Hump Wheel
AB: Some wheels/tires have a low pressure
sensor/transmitter strapped to the wheel (Figure 22).
This is especially true on run-flat tire/wheel systems.
The sensor is positioned directly opposite from the
valve stem. Other low pressure warning systems
have the sensor as part of the valve. To avoid damaging the sensor, always loosen the top bead with
the valve stem at the 2 o’clock position first, then
loosen the bottom bead with the valve stem at the 2
o’clock position, and then continue to loosen the
remaining circumference of the beads as necessary.
Avoid loosening at 180 deg. (opposite) the valve.
Figure 22 - Wheel with Low Pressure Sensor/Transmitter
3. Loosen bottom bead, starting with valve stem at
2 o’clock position next to the loosener shoe
(Figure 23).
Figure 23 - Loosen Bottom Bead
77050/7055/7060/7065 X/EX Rim Clamp Tire Changer •
9
Manual Release Valve
CAUTION
Valve Stem
Smooth
Hump At
Valve
Hole
Ledge
Hump Rest of
Wheel
Valve Stem
Sensor
Valve Stem
Page 12
Aluminum and Custom Wheels
Follow instructions provided for standard steel
wheels, except:
AC. After loosening and lubricating both beads,
rotate the table top until the clamps are in the 12, 3,
6, and 9 o'clock positions (Figure 24).
AD. Clamp wheel from the outside. Position rim
edge into clamp at 12 o'clock position. Lower the
wheel and depress the clamp control pedal. Slowly
move the clamps inward until they securely contact
the outside edge of the rim.
TIP: This is usually accomplished by crouching
down in front of the tire changer, holding the wheel
with the right hand, and operating the clamp control
pedal with the left hand. This allows the operator to
watch the clamps as they move to ensure proper,
damage-free clamping.
4. Clamp the wheel to the table top as described in
item AB on page 9. Always clamp custom wheels
from the outside.
Figure 24 - Rotate Table Top to 12 O'clock
5. Depress the tire sidewall downward with the aid of
the helper foot providing clearance for the mount/demount head to be positioned (Figure 25). Move swing
arm into place. Increase the horizontal distance
between the demount head and the wheel an additional 1/16 to 1/8 inch with the adjustment knob.
Figure 25 - Helper Foot Depressing Sidewall of Tire
6. Lubricate upper bead liberally. Use the bead
roller tool to help push the tire bead down so
bead area is easier to reach for lubrication
(Figure 26).
Figure 26 - Lubricate Upper Bead
7. Locate the valve stem just before the demount
head before proceeding (Figure 27).
Figure 27 - Position Valve Stem Under Demount Head
8. Place the helper foot opposite the demount
head and push the bead into drop center. Insert
bead lifting tool between knob on demount tool
and tire bead Figure 28). Use roller tool to provide clearance.
Figure 28 - Insert Bead Lifting Tool
9. Rotate lifting tool down over wheel to lift bead
up and over the knob and at the same time
remove helper foot (Figure 29).
Figure 29 - Rotate Lifting Tool Down for Demount
Demount Head
Valve Stem
10
• 7050/7055/7060/7065 AX/EX Rim Clamp Tire Changer
Page 13
10. Hold lifting tool in place, depress the table top
rotation pedal momentarily to jog the wheel a
short distance. Check the wheel and tire to verify
that operation is not causing damage. The lifting
tool can usually be removed after jogging the
wheel a short distance. Continue to jog the wheel
to allow the tire sidewall to flex as it crosses the
rim edge. Continue short rotations until top bead is
completely demounted (Figure 30).
Figure 30 - Holding Lifting Tool in Place and Rotate Wheel
11. Demount lower bead. In most cases when
demounting performance tires, the lower bead
will be less difficult. Pay close attention to sensor/transmitter location, and position it just
before the demount tool when starting the lower
bead demount procedure (Figure 31).
Figure 31 - Sensor/ Transmitter Location
12. Use the upper side of the helper foot to hold the
bead in drop center while lifting the lower bead
over the demount tool (Figure 32). Hold the lifting tool in place and remove the helper foot.
Depress the table top rotation pedal momentarily to jog the wheel short distances to complete
the demounting process.
Figure 32 - Helper Holding the Lower Bead in Drop Center
Performance Tires and Wheels - Mounting
1. Lubricate both tire beads liberally. Performance
tires will require more lubrication than standard
passenger car tires.
2. Mount the lower bead. In most cases, the lower
bead will mount easily.
AF: Mounting the top bead can be very difficult when
mounting new tires on performance and custom
wheels. Proceed slowly and cautiously.
3. Position the valve stem 90 degrees clockwise in
front of the mount/demount tool for top bead
mounting. Lift the bead over the rear of the
mounting head. Use the helper tool to hold the
bead in the drop center (Figure 33). Rotate the
wheel in short steps and apply extra lubricant to
mount upper bead.
Figure 33 - Mount Upper Bead, Use Helper
4. On extremely tight tire and wheel combinations,
it may be necessary to use the bottom of the
helper foot to flip the tire bead over the rim
flange (Figure 34)
Figure 34 - Helper Foot to Flip Bead Over Rim Flange
Sensor
77050/7055/7060/7065 X/EX Rim Clamp Tire Changer •
11
Page 14
CUSTOM AND SPECIAL WHEELS
If a custom wheel is damaged in mounting or dis-
mounting, STOP, and
avoid damaging the other wheels. Continue only
when the cause is identified and corrected.
Alloy Wheels
Some manufacturers offer wheels with little or no
drop center. These are not DOT approved. The tire
or wheel - or both - can be damaged and the tire
could explode under pressure, resulting in serious
injury or death. If you attempt to mount/demount this
type of wheel, use extreme caution (Figure 35).
Figure 35 - No Drop Center
European Performance Wheels (Asymmetrical Hump)
Some European wheels have very large humps
except near the valve hole. On these wheels, the
beads should be loosened at the valve hole on both
the upper and lower sides first (Figure 36).
Figure 36 - Asymmetrical Hump on European Wheels
Wheels with Low Pressure Warning Sensors
Performance wheels on some vehicles (including
Corvette, BMW, Lamborghini Diablo) have a pressure sensor strapped to the rim opposite the valve
hole. On these wheels, the beads should be loosened at the valve hole on both upper and lower
sides first (Figure 37).
Figure 37 - Wheels with Low Pressure Sensor
TUBE TYPE TIRES
Mounting
1. Avoid pinching or forcing the tube.
2. Apply rubber lubricant to the beads of the tire.
3. Mount the bottom bead.
4. Round out the tube with a small amount of air.
5. Apply rubber lubricant to the tube.
6. Insert the tube into the tire.
7. Mount the top bead.
Demounting
1. After tire beads are loosened, lubricate the
beads and rim liberally.
2. Position demount head and bead lifting tool as
described in steps 7 through 11 on pages 4 and
5. Depress table top pedal and rotate only a
short distance at a time. This allows you to stop
the process should the tube get pinched.
3. After upper bead is demounted, remove tube
and demount lower bead.
Do it Now
Make sure the instruction and warning
decal is clean and clearly visible to operator.
No Drop
Center
Slight
Hump
Large
Hump
Valve Hole
Transmitter
Mounting
Strap
Valve Hole
✓
CAUTION
12
• 7660/7665AX/EX Rim Clamp Tire Changer
Page 15
Bead Sealing
A 140 PSI air blast from the table jets creates an air
curtain to aid in bead sealing. Never exceed 10 PSI
in the tire during bead sealing. The tire will contain
about 2 PSI when bead seal is obtained.
STAGES OF INFLATION
Review these descriptions and diagrams carefully. Refer to them as necessary during bead sealing, bead seating, and inflation to verify that you are proceeding properly and safely.
Bead Seating
Bead seating usually occurs on the long tapered
side of the wheel first and the shorter side last.
Bead seating will usually require at least 7 PSI in
the tire. 40 PSI is the maximum safe pressure at
this stage regardless of operating pressure.
Most European import cars and many aftermarket
alloy wheels are very tight and may be difficult to
bead seat. Also note that asymmetric hump and
run-flat tires are extremely difficult to bead seat.
Follow tire manufacturer's recommended procedure
for bead seating.
Inflation
After the beads are seated, the tire is inflated. Do
not inflate the tire above the manufacturer's recom-
mended pressure as stamped on the tire sidewall.
The typical inflation pressure for automobile tires is
between 24 and 45 PSI. Light truck inflation pressure typically covers a wider range.
MIS-MATCHED TIRES AND WHEELS
Never attempt to mount and inflate mis-matched
tires and wheels.
Requires rubber lubricant on
both upper and lower beads.
Air flow through valve
requires about 140
PSI air pressure drop
to ensure sufficient
flow on difficult tires.
Lift tire up to assist
seal on top side.
Usually last to "pop" is top side
Requires visual conformation of bead seat
Do not stand
over tire during
bead seat and
inflation.
Table top jets
Do not stand over tire
during inflation.
Mis-matched tire and
wheel combinations
explode, causing personal injury or death to operator and
bystanders. For safety, do not attempt to mount
and inflate mis-matched tires and wheels.
Half Size Tire
14.5, 15.5, 16.5, 17.5, etc.
Even Size Wheels
14.0, 15.0, 16.0, 17.0, etc.
15°
Even Size Tires
14.0,15.0,16.0,17.0, etc.
5°
Note the gap in this area
Note 15° bead seat
Half Size Wheels
14.5, 15.5, 16.5, 17.5, etc.
Bead will not seat properly
DANGER
7660/7665AX/EX Rim Clamp Tire Changer •
13
Page 16
MAINTENANCE INSTRUCTIONS
Read and follow all the maintenance instructions
provided in this manual to keep the machine in good
operating condition. Refer to the other materials
received with the unit and to the service bulletins
from the manufacturer for additional instructions on
proper maintenance and service. Regular inspections and proper maintenance are essential to preventing accidents and injuries.
Before making any
inspection, adjustment, or
repair, disconnect the
power source and block out all moving parts to
prevent injury.
Keep the machine and the
immediate work area
clean. Do not use compressed air to remove dirt and debris from the
machine. Foreign material may be propelled into
the air and into operator or bystander causing
personal injury.
Wear protective clothing
and use eye protection
when making any adjustments or repairs to the machine.
A. The vertical slide should be cleaned with a
vaporizing solvent and then lubricated with
chassis grease once a month.
B. Check the adjustment of the mount/demount
head once a month. See instructions this page.
C. Check the fluid level in the table top transmis-
sion once every 3 months. If fluid shows on dipstick, level is satisfactory. If no fluid shows, add
an SAE 80 gear lubricant until fluid shows on
dipstick.
D. The table top, clamps, mount/demount head,
and other working surfaces should be cleaned
with a vaporizing solvent every month.
E. The clamps should be inspected and metal
chips and dirt removed from the serrations with
a wire brush once a month.
F. Check the tire pressure gauge function daily,
and check the accuracy monthly. Use a pressurized tire and a high quality stick-type pressure
gauge. If necessary, adjust the dial of the
machine gauge. If the gauge is defective,
replace it immediately (part number 107985).
Contact COATS at (615) 641-7533. Check function of the pressure limiter weekly. Always reinstall the lens after adjusting the gauge.
G. Make sure all fasteners are securely tightened.
H. Make certain that all guards and covers are in
place.
I. Check for worn, damaged or missing parts
including grips and protective covers. Replace
them before allowing the unit to be used.
J. On a daily basis, inspect the unit and check to
be certain that all systems are operating normally. Detailed inspection and testing procedures
are specified for various components at regular
intervals. Set up a chart and assign responsibility for these items.
Replace any damaged or
missing safety decals.
They are available from
COATS, (615) 641-7533.
IMPORTANT: These instructions will help you service the unit. Instructions are for a person with some
mechanical ability and training. No attempt has been
made to describe all basic steps. For example, how
to loosen or tighten fasteners. Also basic procedures
such as cycling systems and checking operation of
the equipment are not fully described since they are
known to anyone who does mechanical and service
work. Do not attempt to perform work beyond your
ability or at which you have no experience. If you
need assistance, call an authorized service center or
contact COATS directly.
Mount/Demount Tool Head Adjustment
To Adjust Tool Head Lift
Loosen jam nut (ref. 1) and adjust screw (ref. 2) until
lift clearance is obtained.
To Adjust Lock Tightness
With lock handle unlocked, loosen jam nut (ref. 3)
and adjust pin (ref. 4) until a slight firmness is
obtained, then tighten jam nut and check. Also
recheck tool head lift at this time.
14
• 7660/7665AX/EX Rim Clamp Tire Changer
WARNING
WARNING
CAUTION
CAUTION
Page 17
Separator/Lubricator Maintenance
Check oil and water levels regularly, and perform
these maintenance items weekly:
A. Disconnect air supply to machine.
B. Drain water from the separator by unscrewing
the petcock on the bottom of bowl. Allow water
to drain and tighten petcock securely by hand.
C. Add oil to the lubricator if the fluid level is more
than 1/4” from the top of the gauge. Remove the
filler plug on top of the lubricator and add SAE
10W non-detergent oil or an air tool oil to bring
the level up to 1/4” from the top of the gauge.
Replace filler plug and clean up any spilled oil.
D. Adjust the oil flow by pulling the red flow adjust-
ment ring up and turning it to increase or
decrease the flow. Push the ring down to lock.
Watch the formation of oil drops in the seethrough oil chamber. Reconnect the air supply
and continually cycle the bead loosener through
full strokes and count the drips during the
cycles. The delivery of oil to the air line should
be about 1 drop per 10 cylinder cycles. Adjust
flow as required.
Mount/Demount Head Cleaning
Clean dirt and debris from the mount/demount tool
(duckhead) roller with small screw driver or pick.
Pressure Limiter Maintenance
The pressure limiter helps prevent inflation of standard size of larger tires or tubes beyond 60 PSI to
minimize risk of explosion. This device is for the
safety of the operator and bystanders. Proper operation of the pressure limiter is essential to safe operation of the machine.
Check operation of the pressure limiter as shown
and described below at least monthly:
1. Remove tires and/or wheels from the machine.
2. Connect the inflation hose to an empty service
tank with a pressure gauge (gauge should read
0). Use a tank with a 250 PSI pressure rating.
3. Depress inflation pedal to position 1 to start air
flow through the hose and into the tank.
Maintain a steady pressure for constant flow.
4. Watch the rising pressure on the tank gauge
and the gauge on the machine. Machine gauge
should cycle between check and inflation pressures while tank gauge climbs steadily. As tank
pressure reaches 60 PSI, the pressure limiter
should stop the air flow automatically. Both
gauges should read 60 PSI ± 5 PSI.
5. Release inflation pedal. Check manual release
valve function by pressing the button and
releasing pressure from the tank until it reaches
50 PSI. Disconnect inflation hose, and release
air inside tank.
6. Replace pressure limiter if it fails to cycle properly during inflation, if it fails to shut air supply
off at 60 PSI, or if it malfunctions in any other
way. Do not operate machine with a faulty pressure limiter.
Operating a tire changer
with a defective, improp-
erly adjusted, or bypassed pressure limiter could cause an operator
to accidentally over-pressurize a tire, resulting in
a tire explosion with severe injury or death to the
operator or bystanders. Always be sure that the
pressure limiter is present and is operating
properly on the machine at all times.
Never inflate tire above
manufacturer’s recom-
mended pressure after
bead is seated. Pressure limiter is set at 60 PSI.
Any required inflation above 60 PSI should be
performed in an inflation chamber/safety cage or
securely mounted on the vehicle if an inflation
chamber is not available. A tire explosion may
cause personal injury or death to operator or
bystanders may occur.
77050/7055/7060/7065 X/EX Rim Clamp Tire Changer •
15
Drain
Petcock
Air In
Air Out
Oil Fill
Oil Flow
Adjust
Lubricator
Separator
250 PSI Tank
with Gauge
Watch Pressure
on Both Gauges
Tire Changer
Inflation Hose
Connected to Tank
DANGER
DANGER
Page 18
Robotic Arm Maintenance
A. Grease the robotic arm to maintain smooth rotation. Grease fittings have been provided at the pivot
joints.
B. Check bolt torque periodically at pivot joints.
Proper Torque is 200 ft. lbs.
INSTALLATION INSTRUCTIONS
Proper unit installation is
necessary for safe use
and efficient operation.
Proper installation also helps protect the unit
from damage and makes service easier. Always
place safety poster and instructions near the unit.
Location
Select a location using the drawings below. The
area should provide the operator with enough space
to use the equipment in a safe manner. The area
selected should be well lit, easy to clean and should
be away from oil, grease, brake lathe chips, etc.
Avoid areas where bystanders and customers may
be present.
Workspace Requirements
Air Source
The all-air models require a 14 to 15 CFM air source
at 150 PSI. The air/electric models require a 5 CFM
air source at 150 PSI. The safe operating pressure
range for all models is between 110 PSI and 175
PSI at the machine.
The unit is furnished with a 1/4" pipe thread male fitting for easy connection. This connection is located
on the right side of the rear of the machine. A 1/4"
ID hose (or pipe) for connection to the machine is
satisfactory. Sufficient air pressure assures good
performance.
Electrical Source
The electric models require power from a 15 amp
electrical circuit. Refer to the serial tag located on
the lower part of the machine for specific electrical
requirements for the unit. Have a licensed electrical
technician perform any necessary changes to the
power source before plugging in the unit. The electrical source must have a solid connection (less than
1 ohm) between ground and building ground.
Floor Mounting
The machine should be securely bolted to the floor
with suitable anchors using the hole at each corner
of the machine base.
16
• 7660/7665AX/EX Rim Clamp Tire Changer
88"
66"
72"
CAUTION
Maintain Bolt Torque
at 200 Ft. lbs.
Grease Fittings
Page 19
77050/7055/7060/7065 X/EX Rim Clamp Tire Changer •
17
Page 20
8183762 09/98 © Copyright 2001 Hennessy Industries and COATS
®
All Rights Reserved Printed in USA
FAILURE TO READ AND FOLLOW ALL WARNINGS AND INSTRUCTIONS IN THIS MANUAL
CAN LEAD TO SERIOUS PERSONAL INJURY OR
DEATH TO OPERATOR OR BYSTANDER.
THE OWNER IS RESPONSIBLE FOR MAINTAINING THE OPERATION INSTRUCTIONS AND
DECALS FOR OPERATOR REFERENCE. FOR
ADDITIONAL COPIES, CONTACT THE COATS
®
COMPANY, 1601 J.P. HENNESSY DRIVE,
LAVERGNE, TENNESSEE, 37086 - (800) 688-6359.
TIRE FAILURE UNDER PRESSURE IS HAZARDOUS! This tire changer Will Not Restrain
Exploding Tires, rims or other related equipment.
TIRES CAN EXPLODE, ESPECIALLY IF INFLATED
BEYOND SPECIFIED LIMITS. DO NOT EXCEED
TIRE MANUFACTURERS RECOMMENDED AIR
PRESSURE.
AN EXPLODING TIRE, RIM, OR BEAD SEATING
EQUIPMENT MAY PROPEL UPWARD AND OUTWARD WITH SUFFICIENT ENERGY TO CAUSE
SERIOUS INJURY
OR DEATH TO OPERATOR
AND/OR BYSTANDERS.
DANGER
READ…
Mounting and inflating the
wrong size tire can get
you hurt.
Read
the size on
the tire and make sure it
matches the rim. Be especially careful about putting
a smaller tire on a larger
rim, such as a 16-inch tire
on a 16.5-inch rim.
Inflation of a mismatched
tire and rim can cause an
explosion.
INSPECT…
Before you put any tire on
a rim,
inspect
the rim for
rust, tough spots, bent
edges, or cracks that
could prevent the tire from
seating right. If you spot
any of these problems,
don’t mount the tire until
the rim has been checked
by your shop foreman.
Inspect
the tire for bead
damage.
MOUNT…
Once you’ve made sure the tire is OK
and the right size and the rim is OK,
mount
the tire safely. NEVER, ever
lean over the tire when you’re inflating
it. If a tire does explode, it will go
straight up. You don’t want to be over
the tire if that happens. Also, never
over-inflate the tire, even if the bead
doesn’t seat. Never inflate over 40
PSI. If the tire hasn’t seated, something is wrong. Deflate the tire and
check it and the rim again. If it doesn’t
work the second time, try another tire.
1. Damaged Bead
or Beads.
2. Rusty Wheels.
(particularly in the
bead seat area)
3. Bent or
Cracked
Wheels.
4 A. Mismatched.
(A mis-match of a 16inch tire to a 16.5inch rim causing an
explosion)
4 B. Mismatched.
(16.5-inch tire on a
16-inch rim)
5. Walk-In Tire
and Rim.
6. Back Injuries.
7. Hand or Finger
Injuries.
(Hands or fingers too
close to inflating tire
or bead seats which
may cause injury.)
8. Standing Clear.
(Never put any part of
your body over the
tire changer during
inflation.)
9. Beads will not
Seat at 40 PSI.
10. Improper
Inflation.
Remember R.I.M.
(Read, Inspect, Mount)
for every tire.
BE CAREFUL OF THESE SITUATIONS:
O
NE
W
ORD
F
OR
S
AFETY
R.I.M.
READ
INSPECT MOUNT
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