Specifications

7500 SERVICING BELTS
50
Replacing Poly Chain® Belt
• Remove old belt and replace with new one.
• Replace the belt over the jackshaft sprocket
first. Put the cutter wheel sprocket and the Poly
Chain® belt on the cutter wheel shaft at the
same time, with the sprocket inside the belt.
• Put the cutter wheel tapered bushing on the
cutter wheel shaft and inside the sprocket. Push
the bushing as close to the position you marked
earlier as possible. Replace and tighten the
screws. Torque screws to 67 ft. lbs.
• Tighten the belt by sliding the jackshaft
bearings back into the place that you had
marked on the jackshaft plate earlier. If the old
Poly Chain® belt had the tension adjusted, you
may not be able to get the bearing to move back
to the position marked earlier. Don’t try to
force the bearings back into that position or you
may damage the new belt.
• Tighten the jam bolts.
• Check belt alignment using a straight edge.
Adjust belt alignment by loosening one
jackshaft bearing jam bolt and tightening the
other bearings jam bolt. Make only slight
adjustments and recheck alignment. The
alignment and tension of the V-belt will also
need to be checked after changing and
adjusting the Poly Chain® belt.