Nussbaum TC 450 Manual De Instrucciones página 39

ENGLISH • Instructions manual
When working on self-supporting UHP or Run Flat tyres, using locking from outside
the rim is always recommended.
ATTENTION: In order to avoid marking the rim, alloy rims
should be locked exclusively from the outside after having
mounted the specially-provided protection on the clamps.
WARNING!
When clamping a tyre, NEVER have your hands under the tyre.
To clamp the tyre correctly, position the wheel exactly at the
centre of the turntable (2, Fig. E).
Check to be certain that the wheel is correctly clamped by all
four grippers.
RIM CLAMPED FROM THE OUTSIDE (wheels from 12-24")
Press the pedal (5, Fig. E) to the middle position to position the 4 sliding clamps
(6, Fig. E) so that the reference on the turntable is more or less in line with the
tyre diameter stamped on the sliding clamp.
Place the wheel on the turntable and push down on the wheel while depressing the
pedal (5, Fig. E) all the way to clamp the wheel.
RIM CLAMPED FROM THE INSIDE (wheels from 14-27")
Press the pedal (5, Fig. E) all the way down to close the 4 sliding clamps (6, Fig. E) completely.
Put the wheel on the turntable and depress pedal (5, Fig. E) all the way down. The 4 sliding clamps will open and clamp the wheel.
EXTERNAL LOCKING USING THE RIM PRESSING CONE
When working on self-supporting UHP or Run Flat tyres, using locking from outside the rim is always recommended but, because of
the increased hardness of the side, the locking operations previously described may be difficult to perform.
To make them easier, the PT device can be used as follows:
1- free the chuck by moving both the tyre changer tool arm and the PT device to the re-
tracted position.
N.B.: Before starting, adjust the height of the PT arm to suit the width of the rim.
2- preset the chuck aperture so that when the tyre is placed on it, the clamps are touching
the tyre as close as possible to the edge of the rim (see Fig. I/1).
3- bring the PT arm (19, Fig. E) into the working position; it will lock in place automati-
cally at the centre of the chuck.
WARNING!
To prevent the risks arising from accidental movement, the
mobile arm (29, Fig. E) MUST be turned clockwise to the limit
stop position.
4- fit the rim pressing cone (2, Fig. I/2) onto the arm (1, Fig. I/2), pushing up to snap
it into place.
N.B.: choose the correct cone (from the two supplied) for the size of the hole in the
centre of the rim.
1
1
39
1
2
TC 450 - Liga C 270
H/1
H/2
I/1
I/2