Carlton 3500D, Owner'S Manual, Page: 80 / 129

3500D SERVICING BEARINGS
58
Replacing Jackshaft Bearings
•
Line the jackshaft pulley up with the engine
pulley using a straight edge.
•
When the pulleys are aligned, tighten the screws
in the jackshaft pulley. Recheck the alignment
to be sure nothing changed. Torque the screws
in the jackshaft pulley to 30 ft. lbs
•
Once the sprockets are lined up, tighten Poly
Chain
®
belt by adjusting jam bolts on the
jackshaft bearings. Remember at this point
everything is lined up, so when you adjust one
bearing forward, adjust the other bearing the
same amount.
•
Make only slight adjustments at a time and
recheck tension; repeat as necessary until
tension is correct. Then once the belt is
adjusted, retighten the bolts on the other side of
the bearings. Recheck belt alignment after
tightening all bolts and nuts to make sure the
belt is sill aligned.
•
DO NOT OVER TIGHTEN BELT; OVERLY
TIGHT BELTS WILL CAUSE BEARING
AND ENGINE DAMAGE. To loosen the
tension on a belt, loosen the jam bolts and
tighten the bolts on the other side of the bearing.
Always make slight adjustments and recheck
tension. Also make equal adjustments on both
bearings.
•
Replace belts when worn or when repeated
adjustments are necessary. Belts should never
get so loose that all of the adjustment capability
is used.
•
Tighten bearings down and recheck Poly
Chain
®
sprocket alignment and tension. Use
two wrenches to tighten the bolts in the bearings
as shown in the picture to the right.