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6.3 MOUNTING THE TYRE
WARNING: This checking of tyre and rim is of th utmost importance to prevent tyre explosion during the inflating opera-
tions. Before beginning mounting operation make sure that:
The tyre and the cord fabric are not damaged. If you note defects DO NOT mount the tyre.
The rim is without dents and is not warped. Attention with alloy rims, dents cause internal micro-cracks not visible to
naked eye. This can compromise the rim and can also be a source of danger especially during inflation.
The diameter of the rim and tyre are exactly the same. NEVER try to mount a tyre on a rim if you cannot identify the diame-
ters of both.
Lubricate the tyre beads with the special grease in order to avoid damaging them and to facilitate the mounting operations.
During rim locking NEVER keep your hands under the tyre. For a correct locking operation set the tyre
exactly in the middle of turntable.
During arm tilting make sure that nobody stays behind the tyre-changer
Note: when working with rims of the same size it is not necessary always to lock and unlock the mounting bar; you only need to tilt and
return the arm (P) with the arm and the bar locked in their working positions.
Never keep your hands onto the wheel: the arm recovery to "working position" could set the operator
at risk of hand crushing between rim and mounting tool.
move the tyre so that the bead passes below the front section of the mounting head and is brought up against the edge of the rear section
of the mounting head itself.
Keeping the tyre bead pressed down into the wheel rim channel with your hands, press down on the pedal (Z) to rotate the turntable
clockwise. continue until you have covered the entire circumference of the wheel rim (fig. 19).
To prevent industrial accidents, keep hands and other parts of the body as far as possible from the
tool arm when the table top is turning.
•insert the inner tube (if there is one) and repeat the same operations to mount the upper side of the tyre.
NOTE: Demounting and mounting are always done with the clockwise turntable rotation. Anticlockwise rotation
is used only to correct operator's errors or if the turntable stalls.
Fig. 18
34
Fig. 19
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