Toro 38080, 38065 manual Axle and Friction Plate Disassembly, Traction Drive Systems, Assembly

Traction Drive Systems

6.There are 2 versions of the hub and slider. The early models use a normal thrust washer on either side of the slider. Later models use a thrust washer with an internal key that fits into a keyway cut into the shaft portion of the hub. This keyed version is current; if the older hub is ordered, you will automatically get the new version (Figure 123).

Figure 123 0723-001

Assembly

1.Inspect the hex shaft for nicks, burrs, or rust. Clean and deburr as necessary.

2.Coat the hex shaft with a light coat of engine oil, just enough to prevent rust. Do not use grease as it will stiffen in the cold and prevent shifting.

3.If you are reusing the old hub, assure it is clean and free of burrs.

4.The slider contains an oil impregnated bearing. Wipe the inside of the bearing with a clean shop towel to assure there are no burrs or debris. Apply 2 or 3 drops of clean engine oil to the inside of the bearing, install it on the shaft as shown

(Figure 122). Secure with the keyed thrust washer and snap ring. Note the sharp edge of the snap ring should face away from the slider.

5.Slide the spacer, sprocket, and key into place. The shoulder on the sprocket should face away from the slider. Apply a drop of Loctite™ Blue #242 to the set screw and secure the sprocket to the shaft.

Axle and Friction Plate Disassembly

1.The pulley and shaft go through the bearing hub and the drive plate screws on. Note: The threads are left hand. Rotate clockwise to remove the plate. You may find it easier to clamp the drive plate in a vise and unscrew the pulley (Figure 124).

Figure 124 1577-019

2.The pulley and shaft can now be drawn out of the hub. Note the thrust bearing and snap ring locations (Figure 125).

Figure 125 1577-023

3.Drive the 3 roll pins out of the axle. The axle will now slide out of the bearings.

4.The bearings can now be removed from the frame.

5.Remove 4 self-tapping screws that secure the hub to the friction plate frame.

3 - 18 Two Stage Snowthrower Drive Systems Manual