CLEAN BURN CB 140, Operator'S Manual

Page: 28 / 142

Operator's Manual: Models CB-1750, CB-2500 & CB-3250
3-8
Figure 3G - Blower Installed on Furnace Cabinet (CB-3250)
Installing the CB-3250 Motor Pulley, Blower Pulley, and V-Belt
Installing the CB-3250 Blower Assembly (continued)
1. Review the contents of the Blower Pulley and Motor Pulley as shown in Figure 3F.
2 Refer to Figure 3F. Place the blower pulley over and onto the blower shaft as far as possible
with large bore end of taper outward.
3. Insert the blower key into the bushing. (If the key is deformed and does not fit into place, file the
key to the proper size or replace it with a new key).
4. Slide the bushing (with key inserted) onto the shaft so the tapered end will engage into the
pulley.
NOTE: If bushing does not slide freely on shaft, wedge a screwdriver blade into the saw cut
at the flange OD to open the bore of the bushing. CAUTION: Excessive force may split the
bushing.
5. Align drilled holes in bushing flange with tapped holes in the pulley. Use the capscrews
and washers provided with the bushing package to fasten the pulley on to the bushing. DO NOT
COMPLETELY TIGHTEN THE SCREWS AT THIS POINT! Make sure you can still slide the
bushing and pulley for future alignment with the motor pulley. (Additional information is
available in the “Bushing Instruction Sheet” provided with each bushing)
6. Install the motor pulley following steps 1 through 5.
I89021