SP4012 SERVICING BEARINGS
43
Replacing Jackshaft Bearings
• Remove old bearings and shaft and
replace with new bearings and shaft. Be
sure to turn jackshaft with the longest
keyway pocket toward the Poly Chain®
belt side of the boom and make sure that
the locking collars on the bearings are
facing inward. Bolt new bearings and
jackshaft back into place. Just snug
bolts down, do not tighten all the way
down, you will need to move them later
to adjust belt tension.
NOTE: To make shaft installation easier, place shaft in a freezer for approximately
one hour or overnight if possible. This will shrink the shaft and make installation
into the new bearings much easier.
• Place Poly Chain® sprocket and tapered
bushing back onto jackshaft and tighten
bolts. Replace Poly Chain
® belt.
Alignment is very important, use a
straight edge from the jackshaft
sprocket down to the cutter wheel
sprocket to line up sprockets.
To Next Page
Loading...