American Dryer Corp. Phase 6 Microprocessor Controls ML-190HS - Manual (Page 31)

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5. Loosen V-belts, then rotate pulley and roll V-belts out of
its’ grooves.
6. Remove cap screws.
7. Insert cap screws in tapped removal holes and tighten
evenly until bushing becomes loose on shaft. Refer to
figure “A” on page 25.
8. Remove bushing, pulley, and key.
9. Assemble bushing and sheave as shown in figure “B” on previous page. When cap screws are loosely
inserted, bushing remains fully expanded to provide a sliding fit on the shaft.
10. Insert key on the shaft, then slide sheave to desired position with cap screw heads to the outside.
11. Tighten cap screws progressively. There should remain a gap between the sheave hub and the flange of the
bushing.
IMPORTANT: Tighten screws evenly and progressively. Never allow the sheave to be drawn in
contact with the flange of the bushing. This gap should measure from 1/8” to 1/4”.
Proper cap screw torque is 15 ft.-lbs. If greater tightening forces are applied, excess
pressures will be created in the hub of the mounted sheave which may cause it to
crack.
To Replace Motor Pulley
1. Discontinue electrical power to the dryer.
2. Remove the lint drawer.
3. Remove the lint door.
4. Loosen V-belts, then rotate pulley and roll V-belts
out of its’ grooves.
5. Remove cap screws from bushing.
6. Insert cap screws in tapped removal holes and
tighten evenly until bushing becomes loose on
shaft. Refer to figure “A” on page 25.
7. Remove bushing, pulley, and key.
8. Assemble bushing and sheave as shown in figure “B” on previous page. When cap screws are loosely
inserted, bushing remains fully expanded to provide a sliding fit on the shaft.
9. Insert key on the shaft, then slide sheave to desired position with cap screw heads to the outside.
10. Tighten cap screws progressively. There should remain a gap between the sheave hub and the flange of the
bushing.