INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB
Page 24 of 98
12.5 Functioning of tool holder arm
During the working phases, the tool holder arm can
maintain two firm positions, that is:
1) “Working” position;
2) “Out of work” position.
In “working” position (
Fig. 19 ref. 1
) the tool holder
arm is lowered towards the mandrel and from this
position it executes the various tyre bead breaking,
demounting and mounting operations.
1
Fig. 19
In “out of work” position (
Fig. 20 ref. 1
): the tool
holder arm is in vertical position and has to be brought
in this position every time it is not in use and in order
to be shifted from one tyre bead side to another, dur-
ing working phase.
1
Fig. 20
The tool holder arm, shifts from “off-work” position to
“working” position and vice versa manually.
IN WORK POSITION, THE SAFETY
JACKS (FIG. 2, 3 AND 4 REF. 8)
MUST BE HOOKED TO THE TOOL
CARRIAGE (FIG. 2, 3 AND 4 REF.
13).
Fig. 18
Locking with extensions
Whenever the rim exceeds the 43” in the locking point,
use the appropriate extensions supplied with the tyre-
changer. To avoid damages or scratches on light alloy
rims, the special jaws supplied with the tyre changer
as an optional should be used.
AFTER COMPLETION OF TYRE
MOUNT/DEMOUNT OPERATIONS
DO NOT LEAVE THE WHEEL
CLAMPED ON THE SELF-CEN-
TRING CHUCK AND NEVER LEAVE
IT UNATTENDED ANYWAY.
DURING ALL TYRES MOUNTING AND DE-
MOUNTING OPERATIONS, THE SELF-CEN-
TRING CHUCK ROTATION SPEED CAN BE
DOUBLED BY ROTATING THE SELECTOR (FIG.
10A-10B-10C-10D REF. C). LOW SPEED IS
RECOMMENDED FOR WHEELS WITH GREAT
DIAMETER AND WEIGHT.
THE CAREFUL LUBRICATION OF THE TYRES
BEADS IS RECOMMENDED, IN ORDER TO PRO-
TECT THEM FROM POSSIBLE DAMAGES AND
TO FACILITATE MOUNTING AND DEMOUNTING
OPERATIONS.
7505-M002-4_B
NAV41.11N - NAV41T.11N - NAV41.13N - NAV41T.13N -
NAV41.13EI - NAV41T.13EI - NAV41.13SA - NAV41T.13SA
