Launch TWC-481, Installation And Parts Manual

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LAUNCH Tire Changer TWC-481
7
Mount/Demount Head (Old Style)
Checking calibration measurement
Mount a 15 or 16 inch diameter aluminum alloy rim
(preferably new) onto the turntable.
Lower the mount / demount head onto the rim and
lock.
By means of the appropriate gauge kit, check
measurements as indicated in Fig.12(for mount /
demount head with roller)and fig.13(mount /
demount head with insert).
If the measurements do not correspond proceed as
follows:
Calibration
Loosen all screws securing the mount / demount
head .
Lower the mount / demount head onto the rim and
lock it.
Finger-tighten screws A3-A4(figs.16 and 17) in
order to turn the mount / demount head and obtain
the correct measurements.
Tighten screws A1-A2 (figs.14,18 mount / demount head with roller;figs.15,19 mount / demount head with insert)
to tilt the mount / demount head and obtain the correct measurements and then finger-tighten screw B.
Unlock and raise the hexagonal column, then lower it onto the rim and lock again.
First tighten screws A1-A2-A3-A4 to tightening torque of 50Nm and check by means of gauges that the
measurements remain the same.
Lastly, tighten screw B to a torque of 50Nm and carry out checks once again with the gauges.
Periodic checks
After half a year of duty check measurements as stated in Checking . If they are incorrect proceed as follows:
Check that the screws(A1-A2-A3-A4-B) are tightened properly and repeat calibration as per Calibration.
If measurement 2 for the mount / demount head with roller (fig.12) or measurement 1 for mount / demount head
with insert (fig.13) are changed, the cause may be that adjusting nut (fig.10) has loosened.
Tighten or loosen the nut to increase or reduce lifting range.
Fig.12
Fig.13