4. Installation
38 PNEG-2343 U-Trough Free Flow Unloading System
Pulley Taper Bore Hub Installation
1. Be sure the tapered cone surfaces of the bushing (47) and inside of pulley (93) are clean and free
of grease and oil.
2. Place the bushing (47) in the pulley (93).
3. Place the bolts and lock washers (13) loosely in pull-up holes. Bushing (47) remains fully expanded
to assure sliding fit on the shaft.
4. With key (92) on shaft slide pulley (93) to the desired position on shaft. Be sure heads of bolts are on
the outside.
5. Tighten bolts alternately and progressively until they are pulled up tight. Tighten to 15 lbs.-ft. (20 Nm)
torque. Do not allow pulley (93) to be drawn in contact with the flange of bushing (47). There should
be a gap from 1/8" to 1/4" (3.2 mm-6.4 mm). (See Figure 4AY.)
NOTE: Do not over-tighten. Dry fit only.
Figure 4AY
Ref # Description Ref # Description
13 Bolt with Washer 92 Key
47 Bushing
93 Pulley
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