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 After replacing or repairing bearings, be sure to replace the lubricating oil or grease.
Use exactly the same material the manufacturer recommends.
Add oil to sleeve bearings very slowly. When you see it coming from the overflow
hole, or the indicator cup is full, enough has been added (Figure 5-17).
Ball bearings are greased, rather than oiled. The entire assembly of those that are
permanently lubricated must be replaced when worn out.
FIGURE 5-18
Bearing Lubricated
by Grease
If grease can be added, remove the relief or drain plug, and add grease with a
grease gun on the fill ("zerk") fitting (Figure 5-18). Keep filling until all the old, dirty
grease has been pushed out of the plug. The motor can be run during filling to
make it easier, as long as the pump is not assembled and being run without liquid.
CAUTION
Do not attempt to add grease without removing the relief plug.
Leaving the plug in will cause the beatings to be packed solidly. This
may cause overheating and bearing failure.
REPAIR
5.2 REPAIR PROCEDURES
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