Belt Tensioning And Alignment - USC AT500H Operator's Manual

Power to the auger belt is transmitted through a V-belt. The V-belt drive system must
be maintained at the proper belt tension and pulley alignment to obtain the desired
performance and life. When maintaining the belt drive system for the electric drive
model, follow this procedure:
Turn motor off and unplug power cord or turn off power and lock out
NOTICE
the master panel before starting maintenance on drive belt system.
Drive Belt Tension
1. Push on the center of the belt span with a force
of approximately 5 to 10 lbs.
2. Follow the belt tensioning specification on page 55
to determine proper belt deflection.
3. Move the motor up, using the adjustment bolts, to
set drive belt tension (right).
4. Close and secure guards.
Drive Belt Alignment
1. Lay a straightedge across the pulley faces to
check the alignment (right).
2. Use the pulley hub or the motor mounting plate
slots to move the pulley to the required position
for alignment.
3. Tighten hub bolts to secure pulley on shaft.
4. Check belt tension
5. Close and secure guards.
Drive Belt Replacement
1. Lower motor to its loosest position.
2. Remove old belt and replace with a new one.
3. Raise motor to set the belt tension.
4. Check pulley alignment. Adjust if required.
5. Close and secure guards.
Page 54
AT500H TREATER
DRIVE BELT TENSION & ALIGNMENT
Motor base adjustment
Lay a straightedge across
pulley faces