1.
Relief plug
2.
Fitting
Figure 24: Grease lubricated bearings
1.
Wipe dirt from the grease fittings.
2.
Remove the two grease-relief plugs on the bearing housings.
3.
Fill both of the grease cavities through the fittings with a recommended grease until the fresh
grease comes out of the relief holes.
4.
Run the pump for about 30 minutes or until grease no longer comes out of the housing.
5.
Reinstall the grease-relief plugs.
6.
Wipe off any excess grease.
Figure 25: Thrust bearings
7.
Recheck the alignment.
The bearing temperature usually rises after you regrease due to an excess supply of grease. Tempera-
tures return to normal in about two to four operating hours as the pump runs and purges the excess
grease from the bearings.
6.3.1.1 Lubricating-grease requirements
Grease-lubricated ball bearings are standard on this model. A grease-lubricated bearing can be identified
by grease fittings located on the bearing housing.
6.3 Bearing maintenance
38
Model 3409 Installation, Operation, and Maintenance Manual
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