SHOP NOTES - SPECIFICATIONS - SERVICE TOOLS
FAN HUB SPACER
The new fan hub spacers are similar to the former spacers except for the flange pilot radius and the width of the
spacers (Fig. 1). The flange on the spacer serves as a pilot for the fan, as well as a pilot for the second spacer
when two or more spacers are used together.
The former and new spacers are interchangeable on a former fan pulley hub assembly and only the new
spacers are serviced. The former 0.800-inch thick spacer must not be used with the current shaft-type fan
pulley hub assemblies, unless it is reworked (see Service).
Use of the former thick spacer will crush the fan hubcap causing the drive to bind.
SERVICE: The former 0.800-inch thick spacer can be reworked into the new 0.800-inch thick spacer by
removing material at the radius (Fig. 1). A
Figure 1. Former and New Spacers