HUMMEL
®
01.01.2019
English / Englisch
MAINTENANCE WORK AND REPLACEMENT OF WEARING PARTS
5
If the sanding belt runs to the front (towards
A
in fig. 78) or
to the back (towards
B
in fig. 78) the setting of the sanding
belt regulation is necessary (
Section 7.3.2, Setting the
sanding belt tracking
). If the sanding belt tracking is alright,
mount the side cover (fig. 79).
7.3.2 SETTING THE SANDING BELT TRACKING
Should the setting of the sanding belt tracking be necessary,
proceed as follows:
1
Lift the sanding drum off the floor by turning the lowering
lever at the handle upwards (fig. 74)!
2
Switch off the machine!
3
Release the cover lock (fig. 75, 1) and remove the side cover
on the right of the machine housing (fig. 75, 2).
4
Check whether any soiling at the tensioning roller calls for
readjustment. If so, the tensioning roller must be cleaned
(
Section 7.1.2, Dismantling and cleaning of drive unit
)
and the sanding belt tracking must be checked again
(
Section 7.3.1, Checking the sanding belt tracking
).
5
Always set the sanding belt tracking using a sanding belt with
as fine a grit grade as possible (= flexible sanding belt). This
is because the more flexible the sanding belt, the precisely
it is possible to set the tensioning roller.
Mount the sanding belt
(
Section 5.3, Changing the sanding
belt
) and carry out a test run (
Section 7.3.1, Checking the
sanding belt tracking
).
If the sanding belt is running out of true (in direction of
A
or
B
in fig. 78), it must be turned around and another test
performed.
If the sanding belt runs to the front (in direction of
A
in fig. 78)
and after turning over runs to the back (in direction of
B
in
fig. 78) or vice versa, the sanding belt is of poor quality and
is
not usable
(conical sleeve)!
If the sanding belt runs in the same direction both times, the
tensioning roller requires readjustment.
Fig. 78
If the sanding belt runs in direction of
A
or
B
, the
setting of the sanding belt regulation is necessary.
Fig. 79
Mount the side cover.
7
43
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