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Bead breaking • Clamping the wheels
1
2
8
20
4.2
Bead breaking
Remove the valve insert of the wheel valve.
We would recommend to demount the tyre from the wide
rim shoulder in the first place.
Adjust the chuck so that no component (cylinder, pneu-
matic unions, etc.) is in contact with the tyre. If necess-
ary, move the jaws inside. Lean the deflated wheel on the
side against the special rubber pads provided at the ma-
chine housing.
Position the bead breaker blade (Fig. 8, Item 1) on the
outside of the tyre approximately 1 cm away from the
edge of the rim using the adjustable handle for accurate
positioning.
Depress pedal (Fig. 8, Item 2). The blade moves in be-
tween tyre and rim. Release the pedal, continue to rotate
the wheel and repeat the breaking procedure until the
tyre has been unseated completely.
Proceed analogously with the second tyre bead.
In order to facilitate subsequent demounting of tyre and to
preserve tyre and rim, it is most useful to apply a commercial
lubricant on tyre and rim at the place where the bead break-
ing blade has just penetrated into the rim base. Never use
other agents only supposed to lubricate!
Operation manual monty 3300/2-speed/GP
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