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52
Mounting and demounting
5.3 Beading the tyres
Beading means the initial grip of the tyre bead on
the rim, in order to allow the infl ation operations and
subsequent settling in the seat on the rim.
Safety Precautions:
For safety reasons a quick-infl ating valve preset to 4,5
bar is fi tted upstream of the pressure gauge for the
pedal-operated infl ating device.
CAUTION: DO NOT USE THE TYRE CHANGER TO INFLATE
TYRES.
COMPRESSED AIR DEVICES ON THE TYRE CHANGER ARE
ONLY DESIGNED TO FACILITATE THE TUBELESS TYRE
BEADING OPERATION.
NEVER EXCEED THE MAXIMUM PRESSURE SPECIFIED BY
THE TYRE MANUFACTURER.
THE OPERATOR MUST STAND SAFELY CLEAR FROM
THE WHEEL WHEN BEADING THE TYRE, AND PRESSURE
MUST BE CHECKED FREQUENTLY TO AVOID EXCESSIVE
PRESSURE.
BEFORE BEADING, CHECK THE CONDITION OF TYRE
AND RIM.
CHECK FOR CORRECT SEALING BETWEEN THE VALVE
AND THE FITTING AT THE END OF THE AIR HOSE. AN AIR
LEAK CAN GIVE INCORRECT PRESSURE READINGS AND
CREATE SAFETY HAZARDS.
CHECK THAT THE READING ON THE PRESSURE GAUGE
IS "ZERO" WHEN IT IS NOT IN USE.
THE COMPLETE SEATING OF THE BEAD ON THE RIM IS
A VERY DANGEROUS STAGE OF THE TYRE MOUNTING
PROCEDURE.
TO COMPLETE THE BEADING OPERATION AND INFLATE
THE TYRE CORRECTLY, PLACE IT IN AN APPROPRIATE
TYPE-APPROVED CAGE.
A TYRE BURST, WHATEVER ITS CAUSE, CAN RESULT IN
SERIOUS INJURY OR DEATH.
AVOID MOUNTING TYRES THAT ARE 1/2" SMALLER IN
DIAMETER THAN THE RIM, BECAUSE OTHERWISE IT IS
NOT POSSIBLE TO ENSURE THAT THE BEADS ARE SEALED
PROPERLY IN THEIR SEATS: THIS COULD BE A SOURCE OF
DANGER WHEN DRIVING.
Beading Tubeless tyres:
Perform the beading with the wheel locked on the tyre
changer.
•
Ensure that both the beads and the inside of the
rim are thoroughly lubricated.
•
Screw the valve insert.
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