Snap-On EEWH329A, Operation Instructions Manual

Page: 15 / 78

15
Snap-On EEWH329A
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. 4.1-1).
535a
Fig. 4.1-1
B.
Break both beads.
Hold open the Bead Breaker, roll the tire/rim into the
Breaker area (Fig. 4.1-2). Ensure that the tire/rim
assembly is fl at 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
mistakenly keep your foot on the bead-breaking pedal
too long. This could potentially result in bead or rim
damage (Fig. 4.1-2)
536
Fig. 4.1-2
NOTICE !
ON RUN FLAT TIRES WITH THE OPTIONAL LOW
PRESSURE SENSOR INSTALLED, BREAK THE
BEAD AT 90 DEGREES OFFSET FROM THE VALVE
STEM. DAMAGE TO THE WHEEL AND/OR SENSOR
MAY RESULT IF THE BEAD IS BROKEN AT ANY
OTHER POINT ON THE RIM.
4 . 0 M O U N T I N G A N D
DEMOUNTING PRECAUTIONS
IMPORTANT! BEFORE MOUNTING A TIRE ON A
RIM, PAY ATTENTION TO THE FOLLOWING:
A. THE RIM MUST BE CLEAN AND IN GOOD
CONDITION: 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.