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units mainframe, this will allow the mounting frame to
slide. Loosen the jam nut on the pusher/puller bolt and turn
the pusher bolt to slide the rear drive assembly to tension
the main drive chain. As long as the chain doesn’t touch the
deck you are fine. Lock down the jam nut on the
pusher/puller bolt, the bolts holding down the rear drive
assembly and replace the guards and you will be ready to
go.
C. Belt tension, there are two belt systems which are typical to the 20”, 30”, 40”
& 60” shaving mills.
a. Cutter head to engine belt system.
i. First remove the guards. This will make it much easier to tension
these belts properly. Start at the cutter shaft and work towards the
engine.
ii. (Note: Use the following procedure for each of the jackshaft
assemblies.) Loosen the jam nuts and pusher bolts on the engine
side; loosen the bearing mounting bolts so the jackshaft assembly
can slide. Now, use the pusher bolts on the cutter shaft side to slide
the jackshaft to tension the belt using the 3/8 rule. Lock down the
cutter shaft side jam nuts and pusher bolts, bearing bolts and
engine side pusher bolts and jam nuts.
iii. Now that you have tensioned all of the belts from the cutter shaft
up towards the engine, tension the last belt that runs from the last
jack shaft to the engine by sliding the engine. Loosen the engine
mounting bolts, the jam nuts and the pull/push bolts on the front of
the engine mounting area to slide the engine and tension the belt.
Be sure to use the 3/8 rule when tensioning this belt.
Note: While these guards are off check the tension of the
blower drive system.
iv. IT IS IMPERATIVE THAT YOU REPLACE AND SECURE
ALL GUARDS PRIOR TO OPERATION OF THIS UNIT.
RUNNING THIS UNIT WITH OUT GUARDS IN PLACE
CAN CAUSE SERIOUS INJURY OR DEATH.
b. Blower assembly belt tensioning.
i. First you need to remove the guards. This will make it possible to
tension the belts properly.
ii. On the back of the actual blower loosen the bolts holding it to the
drop out trough. Loosen the pusher bolt on the top right corner of
the blower. This will allow you to relieve the tension on the belt
running from the blower to the jackshaft.
iii. Now to tension the belts from the cutter shaft to the jackshaft use
the same procedure in step C.a.ii.