BRAILLO
l
B 650 SF
90
4.14 Eccentrics adjustment - Belt tension
After removing the belt, it is necessary to align the eccentrics.
Put the belt back on, tighten it with the belt tensioner (2), and check that the arrows at the end of the
shafts (1) are pointing towards each other. See gure below.
If the marks are not aligned like in the gure, it might be necessary to move the belt a notch or two on
one of the wheels. This is done by loosening the belt tensioner (2) again, and then lift the belt up from
the big wheel and move it a notch on the wheel. Then tighten the belt.
2
1
Hold away
from belt
When pushing in by hand,
the distance should be
approx. 10 - 15 mm.
The belt tension is controlled/adjusted like
this:
Remove the exible tensioner from the belt.
Now the xed tensioner (2) should be adjusted
so that it is possible to press the belt inwards
about 10 - 15 mm. Then adjust the exible
tensioner so the belt runs without vibration.
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