EEWH312A Tire Changer Operation Manual
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4.0 MOUNTING AND DEMOUNTING PRECAUTIONS
IMPORTANT!
BEFORE MOUNTING A TIRE ON A RIM, PAY ATTENTION
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 CLEAN AND 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 defl ate the tire (Fig.11).
535a
Fig.11
B. Break both beads.
Hold open 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
soon as the bead dislodges from the rim, release the 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 mis-
takenly keep your foot on the bead breaking pedal too long.
This could potentially result in bead or rim damage (Fig.12)
536
Fig.12
NOTICE !
ON RUN FLAT DESIGN TIRES WITH THE OPTIONAL LOW
PRESSURE SENSOR INSTALLED, BREAK THE BEAD AT
90 DEGREES OFFSET FROM THE VALVE STEM. DAM-
AGE TO THE WHEEL AND/OR SENSOR WILL RESULT
IF THE BEAD IS BROKEN AT ANY OTHER 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.
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