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7) Remove the 1/4 x 1/4 x 1-3/4 (6.35 mm x 6.35 mm x 4.45 cm) key on the blower (squirrel cage
fan) shaft.
a) Slide the blower (squirrel cage fan) off of the shaft.
NOTE: Install this 1/4 x 1/4 x 1-3/4 (6.35 mm x 6.35 mm x 4.45 cm) key to the fan shaft before
installing the new blower (squirrel cage fan).
8) To install blower (new squirrel cage fan), reverse above procedure (Step #6 thru Step #1).
d. V-Belt Replacement
1) Discontinue electrical power to the dryer.
2) Loosen the bolts securing the blower (squirrel cage fan) motor.
a) Ease off on the tension bolt.
3) Slide the blower (squirrel cage fan) motor forward.
4) Remove and replace V-belts.
5) Tighten and secure the tension bolt.
IMPORTANT: DO NOT OVERTIGHTEN V-BELTS.
6) Using a straight edge, make certain that the motor pulley and V-belts are aligned straight.
7) Tighten and secure bolts from motor to motor base.
8) Reestablish electrical power to the dryer.
e. Fan (impellor) Shaft Replacement
The procedure to replace the Fan Shaft is the same procedure used to replace the Pillow Block Bearing
with Shroud (refer to page 62 and page 63).
3. Blower (squirrel cage fan) Electrical Components
a. Blower (squirrel cage fan) Controls and Overloads
1) Thermal Magnetic Starter (TMS)
The thermal magnetic starter is used as a safety device to protect the motor from starting in a
locked rotor condition. The overload has a dial setting on the face of the device. To set the overload,
refer to your specific electrical diagrams. The overload is specifically designed for motor applications.
It has a current curve built into it so the initial high current draw by the motor will not trip the
overload. On the face of the overload, there are two (2) push buttons - START (Black or Tan - 1)
and STOP (Red - 0) - the overload has to be in the START mode for the motor to run.