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P33b
P34
THRESHING CYLINDER VARIATOR BELT
The TS Threshing Mechanism
To tension the belt, tighten anchor bolts A and B (on the
housing) and connecting bolt C (between the variator
arms),
¿
g. P33b. The connecting bolt must be turned
two turns per each turn of the anchor bolts, to retain the
transmission ratio of the variator.
When tensioning the belt, operate the pulleys by hand to
allow the belt to move evenly on the pulleys. Belt tension
is checked with the variator midway within the adjust-
ment range. The tension is correct when bushing (A) can
be rotated by hand, but it must not roll loosely.
Check the tension of the bushing daily.
After the adjustment, check that the variator arms do not
touch the outer shell of the variator pulley in their mini-
mum or maximum positions. There must be a clearance
of at least 1 mm. If necessary, adjust the arms using
screws A-C or B-C.
PRE-CYLINDER BELT
The belt is tensioned by a spring-loaded jockey pulley.
The tension is correct, when spring length A,
¿
g. P34, is
76+2 mm.
Содержание Comia c4
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