Superabrasive
User
Manual
Original
Language
Lavina®
20N
‐
X
6/2017
21
ATTENTION:
NEVER
“OVER”
TENSION
THE
BELT,
THE
BELT
WILL
BE
DAMAGED
AND
IT
WILL
NOT
RECOVER
ITS
ORIGINAL
TENSION
Reinstall
the
belt
around
the
planetary
pulley;
ensuring
the
belt
goes
around
the
driving
pulley
(Fig.
8.5.3).
Put
the
belt
around
the
left
roller
of
the
tensioner
(Fig.
8.5.4).
Put
the
tensioner
back
in
place
and
pull
the
belt
from
the
roller
on
the
right
side
(Fig.
8.5.5).
Put
the
belt
around
the
driving
pulley
(Fig.
8.5.6).
Begin
to
tension
until
the
10
cm
between
the
marks
stretches
to
10.2
cm(Fig.
8.5.7)
(Fig.
8.5.8).
Rotate
the
head
while
tensioning
to
allow
regular
tension
distribution
along
the
belt
.
Tighten
the
tensioner
by
turning
the
bolt.
Move
the
planetary
head
so
the
belt
has
freedom
to
move.
(Fig.8.5.8).
Do
not
forget
to
retighten
the
screws
on
the
tensioner
(Fig.8.5.9).
8.6
TENSIONING
USED
PLANETARY
BELT
If
there
is
a
loss
of
speed
in
the
planetary
motion,
it
is
possible
to
re
‐
tension
a
used
planetary
belt
by
following
the
instructions
in
8.5
‐
Mounting
and
tensioning
a
new
planetary
belt.
8.7
REPLACING
PULLEY
UNITS
See
previous
chapters
to
remove
the
tool
holders
and
top
cover.
Unscrew
the
screws
lining
the
edge
of
the
bottom
cover
(Fig.
8.7.1).
Set
the
bottom
cover
assembly
aside
(Fig.8.7.2).
Remove
the
O
‐
rings
to
avoid
losing
them
(Fig.8.7.3).
Only
the
two
idle
(non
‐
driving)
pulleys
can
be
removed
without
removing
the
motor
and
base
disc.
Loosen
the
nut
on
top
of
the
pulley
(Fig.8.7.4).
Carefully
eject
the
unit
with
crowbars,
but
do
not
use
excessive
force
(Fig.8.7.5)
(Fig.8.7.6).
Figure 8.7.1
Figure 8.7.3
Figure 8.7.2
Figure 8.7.4
Figure 8.7.6
Figure 8.7.5
Figure 8.5.10
