Removing The Tires; Head Positioning - Hofmann monty 1620 Manual Del Operador

32
monty 1620 - 1625
S
5.1-4
5.1-5
5.1-6
5.1-7

5.1.1 Removing the tires

B E F O R E P R O C E E D I N G W I T H T H E T Y R E
EXTRACTION, CHECK THAT BOTH BEADS ARE
COMPLETELY BROKEN.

5.1.1.1 Head Positioning

Procedure:
· Position the mount/demount head in contact with the
rim edge and lock it into place: the tool automatically
moves away from the rim edge vertically. Turn the
adjustment knob until the mount/demount head
clears from the rim fl ange about 1/25" (1 mm): this
is necessary to avoid rim damage (S, Fig 5.1-4).
Note: once the mount/demount head is
positioned properly, matching wheels may
be changed without having to reset the
head.
Note: the plastic insert inside the mount/demount
tool must be periodically replaced. every
machine is equipped with several plastic
inserts (inside standard equipment box).
if desired, the plastic insert may be
replaced by a steel roller also included in
the standard equipment box. follow the
instructions included with the replacement
parts.
· Insert the bead lifting tool under the bead and
over the support of the mount/demount tool. Lift
the bead onto the mounting fi nger. To facilitate
this operation, press with left hand on the bead in
position diametrically opposite to that of the tool. If
desired, the bead lifting tool can be removed after
lifting the bead onto the fi nger (Fig. 5.1-5).
· Rotate the turntable clockwise and at the same time
push down on the tire sidewall to move the bead
into the drop-center of the rim (Fig.5.1-6).
· Repeat the process for removing the lower bead.
With left hand, lift the bead in position diametrically
opposite the tool to keep it in the drop center (Fig.
5.1-7). Move the swing arm aside and remove the
tire.
Operator's Manual