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B. BELTS & PULLEYS
In order to insure proper power transmission from the motor to the band wheels, pulleys and belts
should be properly aligned and tensioned.
1. To start, loosen the 3-step idler pulley (Pt.#95)and place tension on belt number 3 in Figure 5.
Rule of thumb: Push on belt with your index finger. Deflection should be approximately
W.
2.
Place the 3-groove pulley (Pt#77) on to motor shaft.
3. Wiggle motor a round u ntil the V-grooves line up with the 3-step pulley. Use a straight edge or
plumb bob to check pulley alignment. (See Figure 6.)
4. Attach from the motor pulley to the step pulley, the smaller of the two belts. Line up the belt on
one of the smaller diameter V-grooves on the step pulley.
Note:
You might have to back off the nuts on the 2 motor adjusting screws in order to swing
motor up for enough room to attach belt.
Figure 5 Shows position of pulleys and belts. (1) Pulley, (2) V-belt, (3) Band wheel pulley.
5. To align pulleys, adjust the band wheel pulley (Pt.#70) to the step pulley and then the three
groove motor pulley to the step pulley.
NOTE:
There is a multitude of variation for adjustment.
a. The Bandwheel pulley can be slid along the shaft (R.#63).
b. The Step pulley can be pushed away from the base by doubling up a washer.
c. The 3-groove pulley can be turned around and repositioned on the motor shaft
6. To tighten the belt from the step pulley to the motor, loosen the two nuts on the adjustment
screws and lower the motor into position. The weight of the motor is sufficient for the amount
of tension required. {See Maintenance Section.)
Remember:
Motor should remain level after any adjustments.
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