John Bean EEWH553A Series User manual

High Performance Tire Changer
Operation Instructions
Form ZEEWH553AE

(BLANK PAGE)

COPYRIGHT NOTICE
The information contained in this document is property of Snap-on
Equipment division of Snap-on Incorporated. It or any of the informa-
tion contained within shall not be used, copied, or reproduced without
express written consent of Snap-on Equipment or its holding com-
pany.

(BLANK PAGE)

- Page 5 -
Operation Instructions
SAFETY INFORMATION
For your safety, read this manual thoroughly
before operating the EEWH553A Tire Changer
TheEEWH553ASeriesTireChangersareintendedforusebyproperlytrainedautomo-
tive technicians. The safety messages presented in this section and throughout the
manual are reminders to the operator to exercise extreme care when changing tires
with these products.
There are many variations in procedures, techniques, tools, and parts for changing
tires, as well as the skill of the individual doing the work. Because of the vast number
of wheel and tire applications and potential uses of the product, the manufacturer can-
not possibly anticipate or provide advice or safety messages to cover every situation.
It is the automotive technician’s responsibility to be knowledgeable of the wheels and
tires being changed. It is essential to use proper service methods and change tires in
an appropriate and acceptable manner that does not endanger your safety, the safety
of others in the work area or the equipment or vehicle being serviced.
It is assumed that, prior to using the EEWH553A Series Tire Changers, the operator
has a thorough understanding of the wheels and tires being changed. In addition, it is
assumedhehasathoroughknowledge of the operation and safety features of the rack,
lift, or floor jack being utilized, and has the proper hand and power tools necessary to
service the vehicle in a safe manner.
Before using the EEWH553A Series Tire Changers, always refer to and follow the
safety messages and service procedures provided by the manufacturers of the equip-
ment being used and the vehicle being serviced.
IMPORTANT !! SAVE THESE INSTRUCTIONS -- DO NOT DISCARD !!

- Page 6 -
Overinflated tires or rims mounted on the wrong sized rims can explode produc-
ing hazardous flying debris.
 Read Operator’s Manual before using this Tire Changer.
 Never mount tire on rim with different sized diameter.
 Never exceed maximum inflation pressure listed on tire sidewall.
 Always use safety restraint arm to hold wheel in place while
inflating.
 Always use attached air hose to inflate tires.
Exploding tires can cause death or serious injury.
Risk of electrical shock.
 Do not operate equipment with a damaged power cord or if the
equipment has been dropped or damaged, until it has been
examined by a qualified service person.
 If an extension cord is necessary, a cord with a current rating equal
to or greater than that of the equipment should be used. Cords
rated for less current than the equipment can overheat.
 Unplug equipment from electrical outlet when not in use. Never
use the cord to pull the plug from the outlet. Grasp plug and pull to
disconnect.
 Do not expose the equipment to rain. Do not use on wet surfaces.
 Plug unit into correct power supply.
 Do not remove or bypass grounding pin.
Contact with high voltages can cause death or serious injury.
Risk of electrical shock. High voltages are present within the base unit.
 There are no user serviceable items within the unit.
 Service on the unit must be performed by qualified personnel.
 Do not open any part of the base cabinet.
 Turn power switch off and unplug the unit before servicing.
Contact with high voltages can cause death or serious injury.
Risk of crushing. Stand clear of bead breaker arm during operation.
SAFETY INSTRUCTIONS
IMPORTANT!! SAVE THESE INSTRUCTIONS

- Page 7 -
Operation Instructions
 Read and understand the operation instructions before using this
tire changer.
 Become familiar with all controls before proceeding with operation.
 Stand away from the bead breaker arm when in operation.
 Apply air to breaker in bursts if necessary to control arm depth.
 Keep all persons clear of tire changer.
Contact with moving parts could cause injury.
Risk of pinching or crushing hands and fingers when mounting and demounting.
 Read and understand the operation instructions before using this
tire changer.
 Keep hands and fingers clear of rim edge during demounting and
mounting process.
 Keep hands and fingers clear of mount/demount head during opera-
tion.
 Keep hands and other body parts away from moving surfaces.
 Do not use tools other than those supplied with tire changer.
 Do not bypass any safety features.
 Use proper tire lubricate to prevent tire binding.
Contact with moving parts could cause injury.
Risk of eye injury. Flying debris, dirt, and fluids may be discharged during bead
seating and inflation process.
 Remove any debris from tire tread, wheel surfaces.
 Remove excess tire lubricant before inflating.
 Wear approved safety glasses during mount and demount
procedures.
Debris, dirt, and fluids can cause serious eye injury.
Risk of injury. Tools may break or slip if improperly used or maintained.
 Read and understand the operation instructions before using this
tire changer.
 Use only the mount-demount tire tool supplied with the tire changer.
 Frequently inspect, clean, and lubricate (if recommended) where
designated.
 Follow procedures when instructed in this manual.
Tools that break or slip can cause injury.
IMPORTANT !! SAVE THESE INSTRUCTIONS -- DO NOT DISCARD !!
Warning !
Warning !

- Page 8 -
Tires and Rims that are not the same diameter are mismatched.
 NEVER attempt to mount or inflate any tire and rim that are mismatched.
 ALWAYS check to see that tire and rim diameters are the same.
A mismatched tire and rim will explode causing death or serious personal injury
Over-pressurized tires can explode causing flying debris.
 Read and understand Operator’s Manual before operating.
 Keep bystanders away from work area.
 ALWAYS wear Safety Goggles.
 ALWAYS check to see that Tire and Rim diameters are the same.
 NEVER attempt to mount or inflate any Tire and Rim with different
diameters.
 Inspect tires, NEVER inflate tires that are damaged, rotten or worn.
 NEVER inflate ‘Split Rim Wheels’ on this tire changer, remove them and
use only an approved safety inflation cage designed for this purpose.
 Lock turntable Clamp on inside of rim before attempting to inflate tire.
 Use approved tire bead lubricant before removing or installing tire on
rim.
 ALWAYS position the “Safety Restraint Arm” over the wheel to hold it
to the turntable while inflating if so equipped.
 If a tire explodes on this tire changer, STOP using it until the "Safety
Restraint Arm" has been replaced, which must be done even if no
damage is seen.
 NEVER place head or body over a tire during inflation process.
 Use short bursts of air to seat tire beads, check tire air pressure
frequently. NEVER exceed tire manufacturer’s pressure limits.
 NEVER attempt to bypass or alter the built in air pressure limiter. Only
inflate tire with air hose supplied with tire changer. NEVER use shop
inflation hose to inflate a tire.
 Tire Changer must be anchored to concrete floor if equipped with a
“Safety Restraint Arm”
Exploding Tires can cause serious injury.

- Page 9 -
Operation Instructions
TABLE OF CONTENTS
SAFETY STATEMENTS Page 5-8
TABLE OF CONTENTS Page 9
1.0 Introduction Page 10
1.1 Specifications and Features Page 10
1.2 Nomenclature Page 10
1.3 Dimensions of the Machine Page 12
1.4 Standard Accessories Page 12
1.5 Optional Accessories Page 13
1.6 General Precautions Page 14
2.0 Installation Page 14
2.1 Electric Installation Page 14
2.2 Bead Breaker Installation Page 15
2.3 Air Installation Page 15
3.0 Controls Page 16
4.0 Mounting and Demounting-precautions Page 17
4.1 Demounting Tubeless Tires Page 17
4.2 Mounting Tubeless Tires Page 20
4.3 Inflating Tubeless Tires Page 21
5.0 Demounting Tube Type Tires Page 23
5.1 Mounting Tube Type Tires Page 23
5.2 Inflating Tube Type Tires Page 24
6.0 Mounting/Demounting Motorcycle Tires Page 24
7.0 Maintenance Page 25
8.0 Optional Bead Assist Attachment Page 26

- Page 10 -
1.0 INTRODUCTION
Congratulations on purchasing the JBC EEWH553A elec-
tric/air tire changer. This tire changer is designed for ease
of operation, safe handling of rims, reliability and speed.
This combination of features means more profit and added
versatility for your shop, enabling you to work with aluminum
or magnesium alloy wheels without damaging customer’s
rims. With a minimum of maintenance and care your JBC
EEWH553ATireChanger willprovide manyyears of trouble-
free operation.
Pleaseread this manualthoroughly before operating the unit.
Instructions on use, maintenance and operational require-
ments of the machine are covered in this manual.
1.1 SPECIFICATIONS
Operation temperature range +41/+122 F (+5/50 C)
Tirechangersfor car, lightcommercial vehicleand motorcycle
tires designed for one-piece rims.
EEWH553A Series
Shipping Weight - EEWH553A 517 lbs.
Rim Clamping Capacity-outside: 10” to 20”(254-508mm)
Rim Clamping Capacity-inside: 12” to 22”(305-559mm)
Maximum Rim Width: 15” (381mm)
Maximum Tire Diameter: 40” (1016mm)
Turn Table Operation Dual Speed with Reverse
Turn Table Torque (lb - ft) 885
Turn Table Speed (RPM) 7 and 14 CW / 7 CCW
Bead Breaker Force: 3,300 lbs. @ 150 PSI
Bead Breaker Opening:* ADJ. (2.5”-12.5”) or (3” - 15”)
Air Pressure Required: 110 to 170 psi (8-12bar)
Electrical Requirements: 230V 60Hz 1 ph 12A
*Tire profile may effect machines ability to completely break
bead. Specification given is opening between breaker pad
and breaker blade only.
1.2 NOMENCLATURE
Beforeinstalling andusing theJBC EEWH553ATireChanger
itissuggested thatyoubecome familiarwith thenomenclature
of the machine’s components.
1 Vertical slide
2 Diameter Slide
3 Diameter Lock Button
4 Diameter Slide Handle
5 Mount/demount head
6 Tower or column
7 Turntable
8 Clamping Jaws
9 Bead breaker arm
10 Bead breaker blade
11 Bead breaker pads
12 Foot pedal controls
13 Inflation gauge
14 Bead seater/inflator pedal
15 Inflation jets
16 Safety restraint arm
(Optional)
17 Safety restraint positioning knob
(Optional)
18 Inflation hose
19 Lube bottle
20 Mount/Demount Tool
21 Safety Restraint Arm Anti-rotation Lock
Jaw and Air
Jet Detail
7
8
15
827a
Figure 1

- Page 11 -
Operation Instructions
TURNTABLE & CABINET FEATURES
EEWH553A Series
TURNTABLE AND CABINET FEATURES
* ROUND OVERSIZED 22” TURNTABLE PLATFORM -
Provides superior support and capacity to change up to 22” high
performance tires.
* INTEGRATED BEAD SEATING JETS - Air inflation jets are
integrated into the turntable clamping jaws to insure full bead seating
force directly into the tire cavity regardless of tire diameter.
* TWIN CYLINDER CLAMPING POWER - Two 3” clamping
cylinders provide uniform clamping pressure throughout the stroke
(regardless of rim sizes) as well as providing 25% more clamping
power than most single clamping cylinder tire changers. Additionally
two smaller cylinders reduce the critical turntable to cabinet distance,
reducing the stress on the transmission.
2-Speed Turntable with Reverse - Forward speed of 14 RPM
provides faster throughput when mounting the initial bead, with a 7
RPM standard speed providing precise control and minimizes tearing
of tires. In the event the bead becomes jammed up on lower profile
performance tires, the 7 RPM reverse mode quickly relieves the
mount/dismount head to minimize wheel damage from using a prybar.
* WHEEL CLAMPS
UNIQUE SIX POINT CONTACT CLAMPS
Provide better gripping capability regardless of dirt and
moisture.
REDUCED ANGLE CLAMPS
Increases clamping contact area with rim insuring no
slippage when clamping from outside.
NYLON INSERT SOFT TOUCH CLAMPS
Single sided nylon insert in the clamping jaws provides non-
metal touch in critical customer visible areas.
* WATER SEPARATOR AND AUTOMATIC OILER
Lubricates all air used for machine operation, does not lubricate air
used for tire inflation, as do some competitive models.
* INCOMING AIR PRESSURE GAUGE
Ergonomically located air gauge allows easy monitoring of incoming
air pressure
* INTEGRATED PRESSURE LIMITER
Integrated safety pressure limiter stops air flow once pressure has
reached 55 PSI preventing accidental tire over-inflation.
MOUNT/DEMOUNT ARM ASSEMBLY
* PNEUMATIC TOWER TILT - Mount/Demount tower automati-
cally tilts back with the single push of a foot operated pedal.
* ADJUSTABLE SLIDEWAY - Unique adjustable mount/demount
shaft slideway allows for easy operator adjustment to compensate for
any cumulative wear in the slideway causing mount/demount head
movement.
* NON-SCRATCH NYLON INSERT - Integrated into the mount/
demount head is a scratch resistant nylon insert protecting against
accidental rim contact.
RACING/HIGH PERFORMANCE MODIFICATIONS
* HIGH TORQUE 1HP MOTOR -
Industrial strength high torque turntable drive motor ensures
smooth, quiet operation.
* PNEUMATIC OPERATED DOUBLE LOCK - Unique design
provides the ultimate in mount/demount head rigidity by pneumati-
cally locking the arm at two separate points, with the push of a thumb
activated button.
* INCREASED TOWER STRENGTH - Square Mount/Demount
tower has increased steel thickness (.24”), increased horizontal arm
(2”x2 3/4”) to minimize any flex while mounting high performance
tires.
SAFETY RESTRAINT ARM
* TIRE/RIM ASSEMBLY RESTRAINT - Safety Restraint Arm
positively restrains tire and rim assembly to the tire machine during
the inflation process reducing potential for injury caused by the
unlikely event of catastrophic tire or rim failure.
* SIMPLE SWING ARM DESIGN - SRA arm easily swings to
the left when not in use allowing the technician to quickly and safely
perform the inflation process without disrupting the tire changing
procedure.
* GRAVITY LOCK - SRA lock mechanism operates without any
mechanical cam system eliminating the possibility of system deterio-
ration or mis-adjustment from mechanical wear.
* POSITIONING SAFETY INTERLOCK SWITCH - Integrated
switch insures that SRA arm is centered on the tire/rim assembly
before the inflation process can begin.
* ANTI-ROTATION LOCK - Prevents SRA from rotating during
inflation process.
CONSTRUCTION DESIGNED FOR DURABILITY
* RUST PROOF VALVES AND CYLINDERS - Critical bead
breaking cylinder is lined with rustproof polyfiber liner for years of rust
free operation.
* LIFETIME LUBRICATED POLYMER VALVES - Critical foot-
valves fabricated from glass/fiber self lubricating material providing
years of maintenance free operation.

- Page 12 -
1.3 MACHINE DIMENSIONS
827
Figure 2
1.4 STANDARD ACCESSORIES
87111 - Mount /Demount Tool (Fig.3)
294
Figure 3
Inflation Gauge is mounted on the Inflation Column.
(Not shown)
Air Filter and Air Lubricator, (Fig.4)
539
Figure 4
Incoming Air Pressure Gauge
Located on the air filter and the air lubricator
Lubrication Bottle
Lubrication Applicator
Replacement Mount/Demount Head Inserts (4)

- Page 13 -
Operation Instructions
1.5 OPTIONAL ACCESSORIES
87435 - Motorcycle Adapter (Fig.5)
320
Figure 5
87436 - 8” Wheel Adapter (Fig.6)
316
Figure 6
66735 - Bead Holding Clamp (Fig.7)
315
Figure 7
Figure 5a
87434 - Mount/Demount Assisant (Fig 5a)

- Page 14 -
1.6 GENERAL CAUTIONS
A. DURING THE USE AND MAINTENANCE OF THE MA-
CHINE IT IS MANDATORY TO COMPLY WITHALL LAWS
AND REGULATIONS FOR ACCIDENT PREVENTION.
B. THE ELECTRICAL POWER SOURCE MUST HAVE A
GROUND CABLE AND THE GROUND CABLE OF THE
MACHINE MUST BE CONNECTED TO THE GROUND
CABLE OF THE POWER SOURCE.
C. BEFORE ANY MAINTENANCE OR REPAIRS ARE AC-
COMPLISHED THEMACHINE MUSTBE DISCONNECTED
FROM THE AIR AND ELECTRICAL SUPPLY.
D. NEVER WEAR TIES, CHAINS OR OTHER LOOSE
ARTICLES WHEN USING, MAINTAINING OR REPAIR-
ING THE MACHINE. LONG HAIR IS ALSO DANGEROUS
AND SHOULD BE KEPT UNDERA HAT. THE USER MUST
WEAR PROPER SAFETY ATTIRE - GLOVES, SAFETY
SHOES AND GLASSES.
2.0 INSTALLATION
Your new JBC EEWH553A Tire Changer requires a simple
installation procedure requiring only a few moments. Fol-
low these instructions carefully to insure proper and safe
operation.
The Tire Changer is delivered mounted to a wooden skid.
Remove tire changer from its mounts carefully, taking care
to avoid any back strain.
Place Changer where proper operation will be unobstructed
to all sides. Install the machine in a covered and dry place.
2.0.1 Models with SRA attached (Optional)
Onceplaced in the desired location the tire changer must be
bolted to the floor using only the rear two mounting holes.
Mounting anchors are provided with those machines with a
Safety RestraintArm. Concrete must be a minimum of four
inches commercial grade, 3500-4000 PSI, with a cure time
of at least 28 days. Steel mesh reinforced.
Tire Changer must be anchored to concrete floor
if equipped with a “Safety Restraint Arm”
2.1 ELECTRICAL INSTALLATION
BUILDING ELECTRICAL INSTALLATION MUST BE
MADE BY A LICENSED ELECTRICIAN.
Check that the electrical specifications of the power source
are the same of the machine. The machine uses 230v, 60
hz, single phase 12 amp source. Electric specifications are
clearly marked on a label at the rear of the machine.
FAILURETOPROVIDEPROPERELECTRICALSUP-
PLY AND GROUNDING WILL CREATE A SHOCK
HAZARD TO THE OPERATOR.
540

- Page 15 -
Operation Instructions
2.2 AIR INSTALLATION
THEAIR INSTALLATION MUST BE MADE ONLY BY
QUALIFIED PERSONNEL.
EXCESSIVE AIR PRESSURE CAN SERIOUSLY IN-
JURE PERSONNELAND DAMAGE THE MACHINE.
Ensure that the line pressure is within the limits required by
the machine. If the pressure exceeds 170 psi (12 bar) it is
mandatory to install a pressure regulator before the air inlet
of the machine.
If the air pressure is lower than the minimum required of
110 psi (8 bar) the clamping power of the turntable and the
bead breaker power may be insufficient for certain tires and
substantially reduces tire changer performance.
It is suggested that the air supply be equipped with a water
separator/dryertype modificationfor maximum performance.
After ensuring all the above proceed as follows:
A. Connect the machine to the air sup-
ply with a rubber hose (rated for the
pressure) with an internal diameter of
no less than 1/2” (12.5mm).
WARNING!
BEFORE CONNECTING THEMACHINE TOTHEAIR
SUPPLY BE SURE ALL PERSONNEL ARE CLEAR
OF THE MACHINE AND NO ITEMS ARE LEFT ON
THE TURNTABLE.
B. It is recommended that an air valve shut-off be installed
between the shop air supply and the tire changer in case of
air line or filter failure.
C. Should you install any optional accessories, please refer
to the relevant instructions.
D. Ensure the functional ability of the air lubricator by ensur-
ing that the glass site bowl is filled with air lubricant.

- Page 16 -
3.0 CONTROLS
554
Figure 8
Before operating the machine, take time to familiarize your-
self with the operation and function of all controls.
APress down the first pedal from the left, the tower will
pneumatically move into position. Press again to make
the tower move back.
B Press down and release the second pedal (1) from the
left: the jaws of the turntable will retract. Do it again:
the jaws will expand. If you press the pedal prior to the
end of the stroke and release, the jaws may be stopped
in any position.
COpen the bead breaker arm. Press down and hold the
secondpedal (2) from theleft: by doing this you operate
the bead breaker blade and the arm will move towards
themachine. Releasethe pedal:the beadbreaker blade
will retract.
DPress down and hold the second pedal from the right:
the turntable turns clockwise.
1. 3/4 down approximately, the turntable rotates at the
minimum speed (7 RPM). The torque is maximum in
this condition.
2. All the way down the turntable rotates at the maximum
speed (14 RPM).
Placing your foot under the pedal and lift, the turntable
turns counterclockwise.
E Pressthe diameterlock buttonto lockthe diameterslide,
press again to release the diameter slide.
541a 542a
WARNING!
WATCH YOUR FINGERS AND LEGS!
E
A
B
C
D

- Page 17 -
Operation Instructions
FPress bead-seater pedal on left side of the machine (6
)half way down: air will come out from inflation hose
end.
GPressbead-seater pedal (6) all the way down swiftly to
get air blast from the inflator jets in the clamping jaws.
Air simultaneously comes out of inflator hose.
ATTENTION!
WHEN OPERATING THE BEAD SEATER IT IS MANDA-
TORY TO WEAR SAFETYGLASSES TO PROTECT EYES.
Standard Model with SRA
HSafetyRestraintArm(7) swingstocenter oftheturntable.
I Lift upward on the restraint positioning knob (8) to posi-
tion over tire/wheel assembly for inflation, at the same
timepush down ontheAnti-rotationLockArm to release
lock. (9) You may now swing the safety restraint arm to
position on the center of the wheel. Lower the restraint
until the rubber pad on the restraint disc is resting on
the rim center. The SRA is a gravity lock which will
automatically lock if any force other than the restraint
positionknob is lifted. Youare now readyfor the inflation
process.
NOTE: the air supply will not function until the safety
arm is centered over the turntable.

- Page 18 -
4.0 MOUNTING AND DEMOUNTING PRECAUTIONS
IMPORTANT!
BEFORE MOUNTINGATIRE ONA RIM, PAYATTENTION
TO THE FOLLOWING:
A. THE RIM MUST BE CLEAN AND IN GOOD CONDI-
TION: IF NECESSARY CLEAN IT AFTER REMOVING
ALL WHEEL-WEIGHTS INCLUDING ‘TAPE WEIGHTS’
INSIDE THE RIM.
B. THE TIRE MUST BE CLEANAND DRY, WITHOUT ANY
DAMAGE TO THE BEAD.
C. REPLACE THE RUBBER VALVE STEM WITH A NEW
ONE OR REPLACE THE ‘O’ RING IF THE VALVE STEM
IS MADE OF METAL.
D. IF THE TIRE REQUIRES A TUBE, MAKE SURE THE
TUBE IS DRY AND IN GOOD CONDITION.
E. LUBRICATION IS NECESSARY TO MOUNT THE TIRE
CORRECTLY AND GET A PROPER CENTERING. BE
SURE YOU ARE USING APPROVED LUBRICANT ONLY.
F. MAKE SURE THE TIRE IS THE CORRECT SIZE FOR
THE RIM.
4.1 DEMOUNTING TUBELESS TIRES
A. Remove all wheel-weights from the rim. Remove the
valve stem or valve stem core and deflate the tire (Fig.11).
535a
Fig.11
B. Break both beads.
Holdopen the Bead Breaker, roll the tire/rim into the Breaker
area (Fig. 12). Ensure that the Tire/rim assembly is against
the rubber breaker pads on the side of the machine. Make
certain that the bead breaker blade is not over the top of any
portion of the rim. Now activate the bead breaker pedal. As
soonas the beaddislodges from the rim, releasethe breaker
foot pedal. It may be necessary to rotate the tire 90 degrees
and repeat the above procedure to dislodge all beads.
Pay extra attention during this operation as
it is easy to mistakenly keep your foot on the
bead breaking pedal too long. This could po-
tentially result in bead or rim damage (Fig.12)
536
Fig.12
NOTICE !
ON CHEVROLET CORVETTE WHEELS WITH THE OP-
TIONAL LOW PRESSURE SENSOR INSTALLED, BREAK
THE BEADAT 90 DEGREES OFFSET FROM THE VALVE
STEM.DAMAGETOTHEWHEELAND/ORSENSOR WILL
RESULT IF THE BEADIS BROKENAT ANYOTHER POINT
ON THE RIM.
C. Set the rim clamps to the proper position: retract clamps
to clamp the wheel from the outside and expand clamps to
clamp from the inside.
When clamping small wheels (14” or smaller) from the out-
side, set the clamps at a diameter nearly equal to the rim
diameter, before placing the wheel on the clamps. This will
help avoid the possibility of pinching the tire as the clamps
retract.
NOTICE !
TO MINIMIZE THE RISK OF SCRATCHING ALLOY OR
CLEAR COATED RIMS, THESE RIMS SHOULD BE
CLAMPED FROM THE OUTSIDE.
1/16”

- Page 19 -
Operation Instructions
D. Liberally lubricate both beads. Place the wheel WITH
DROP CENTER UP (Fig.13a) on the turntable, and clamp
in position. Hold the tire and wheel down while clamping.
331
Fig.13 Fig. 13a
E. Gently position the mount/demount head in contact with
rim edge, now manually push the lock button and lock it into
place. The tool automatically moves vertically up and away
from the rim edge. See Figure 14.
332
Fig.14
NOTE:
EVERY MACHINE IS EQUIPPED WITH SEVERAL RE-
PLACEMENT PLASTIC INSERTS (INSIDE STANDARD
EQUIPMENT PACK). THE PLASTIC INSERTS WILL
HELP AVOID DAMAGE FROM ACCIDENTAL CONTACT
BETWEEN THE MOUNT/DEMOUNT HEADAND THE RIM.
THE PLASTIC INSERTS WILL NEED TO BE PERIODI-
CALLY REPLACED.
MAINTENANCE NOTE:
IF THE MOUNT/DEMOUNT HEAD NYLON INSERTSARE
WEARING OUT PREMATURELY, THE CAUSE IS THE
OPERATORS FAILURE TOCORRECTLY SET THESWING
ARM ADJUSTMENT KNOB, CAUSING THE INSERT TO
INCORRECTLY CONTACT THE RIM.
NOTE:
ONCE THE MOUNT/DEMOUNT HEAD IS POSITIONED
PROPERLY, IDENTICAL WHEELS MAY BE CHANGED
WITHOUT HAVING TO RESET THE HEAD.
F. Insert the mount/demount tool under the bead and over
the support of the mount/demount head. Lift the bead onto
the mount/demount head. To make this operation easier,
insurethatthe beadof thetire,directly acrossfrom themount/
demount head, is in the drop center of the wheel. Push the
tire into the drop center with your hand or bead depressor
tool if necessary.
If desired, the mount/demount tool can be removed after
lifting the bead onto the mount/demount head (Fig.15), or
you may remove the tool after the bead has been removed.

- Page 20 -
333
Fig.16
G. Rotate the turntable clockwise (pedal down) and, at the
same time, push down on the tire sidewall to move the bead
into the drop center of the rim (Fig.16).
334
Fig.17
H. Repeat the process for removing the lower bead.
This time, lift the bead opposite to the mount/demount head
to keep it in the drop center (Fig.17).
Move the swing arm aside and remove the tire.
335
DANGER!! Keep hands
and fingers clear of
mount-demount head
during operation.