Do not rebuild with any obsolete parts such as keyed shafts, keyed gears, and keyed
mounting assemblies. Keyed shafts and gears were discontinued to prevent failures
through keyways. Use only current part numbers or replace with current assemblies.
Only use specified ball bearings. Bearings of similar code and size do not necessarily
have equivalent capacities.
1. Support front of shaft (Figure 12, Item 1) and install front bearing (Figure 12, Item 4), spacer (Figure 12,
Item 3), and rear bearing (Figure 12, Item 2) on rear of shaft.
Press only through inner race of ball bearings; otherwise, damage will occur. Failure to
follow caution will fail bearing and may cause damage to fan drive assembly.
2. Install inner race until front bearing (Figure 12, Item 4), spacer (Figure 12, Item 3), and rear bearing (Figure 12,
Item 2) bottoms out on rear of shaft (Figure 12, Item 5).
Pressing Bearings and Spacer to Shaft.