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31
AUGER DRIVE BELTS
BELT TENSION-DRIVE SHAFT
Tension of auger drive shaft belt (Figure 26), is
changed by increasing or decreasing tension on
spring on idler arm. To increase belt tension,
loosen lock nut and turn adjusting nut clockwise.
To decrease tension, turn adjusting nut counter-
clockwise. A spring with a hook-to-hook
measurement of 6-11/16 " will give proper
tension. After adjusting, tighten lock nut.
SHEAR BAR ADJUSTMENT
The shear bar (Figure 25) eliminates forage binding
between fan blade tips and blower band. It also
prevents power loss, plugging, and material
carryover.
Figure 25. Material Shear Bar
Adjustment or replacement of shear bar is done
with outlet boot removed. To adjust shear bar,
loosen bolts and adjust shear bar (bevel down) so
that there is a .030" - .040" clearance between it
and tips of fan blades. Tighten bolts securely when
adjustment is completed.
Turn fan shaft by hand after making any adjust-
ments to insure the fan blades clear shear bar.
Important
Check the shear bar adjustment whenever
band and outlet boot position is changed.
CAUTION
Keep hands out of blower outlet while rotating
fan.
Figure 26. Auger Drive Shaft Belt Adjustment