F. Pulleys
To Replace Tumbler Pulley
1. Loosen
2. Remove cap screws from the bushings.
3. Insert cap screws in tapped removal holes and tighten evenly until bushing becomes loose on shaft.
See figure "A".
4. Remove bushing, pulley, and key.
5. Assemble bushing and sheave as shown in figure "B". When cap screws are loosely inserted, bushing remains fully expanded to provide a sliding fit on the shaft.
6.Insert key on the shaft, then slide sheave to desired position with cap screw heads to the outside.
7. 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
To Replace Small Idler Pulley
1. Loosen
2. Remove cap screws from the bushings.
3. Insert cap screws in tapped removal holes and tighten evenly until bushing becomes loose on shaft.
See figure "A".
4. Remove bushing, pulley, and key.
5. Assemble bushing and sheave as shown in figure "B". When cap screws are loosely inserted, bushing remains fully expanded to provide a sliding fit on the shaft.
6.Insert key on the shaft, then slide sheave to desired position with cap screw heads to the outside.
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