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4.3 Beading the tires
Beading
means the initial grip of the tire bead on the
rim, in order to allow the infl ation operations and subse-
quent settling in the seat on the rim.
Safety Precautions:
WARNING:
DO NOT USE THE TIRE CHANGER TO
INFLATE TIRES.
COMPRESSED AIR DEVICES ON THE TIRE CHANG-
ER ARE ONLY DESIGNED TO FACILITATE THE
TUBELESS TIRE BEADING OPERATION.
NEVER EXCEED THE MAXIMUM PRESSURE AL-
LOWED BY THE TIRE MANUFACTURER.
THE OPERATOR MUST STAND CLEAR FROM THE
WHEEL WHEN BEADING THE TIRE, AND PRESSURE
MUST BE MONITORED FREQUENTLY TO AVOID EX-
CESSIVE PRESSURE.
BEFORE BEADING, CHECK THE CONDITION OF TIRE
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 THE BEAD ON THE RIM IS A
VERY DANGEROUS STAGE OF THE TIRE MOUNTING
PROCEDURE.
TO COMPLETE THE BEADING OPERATION AND
INFLATE THE TIRE CORRECTLY, PLACE IT IN AN AP-
PROPRIATE TYPE APPROVED CAGE.
A TIRE BURST, WHATEVER ITS CAUSE, CAN RESULT
IN SERIOUS INJURY OR DEATH.
AVOID MOUNTING TIRES THAT ARE 1/2” SMALLER
IN DIAMETER THAN THE RIM, DOING SO FAILS TO
ENSURE THAT THE BEADS ARE SEALED PROPER-
LY IN THEIR SEATS: THIS COULD BE A SOURCE OF
DANGER WHEN DRIVING.
•
Place the wheel in a type approved device to fi nish infl ating
and completely settle the beads in their seats on the rim.
Beading tubeless tires is sometimes diffi cult because the
beads may be very close together (e.g. owing to incorrect
stacking) and so fail to seal against the rim properly.In this
event it may be helpful to place the wheel on the fl oor in a
vertical position and ‘bounce’ it while introducing air with
the pedal control or with the Infl ator Gauge (
Figura 4.3-1
).
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