Cummins/Onan — Generator Bearing Inspection and Maintenance

For these Cummins/Onan models: MDKUB/MDKWB, MDKWB.

Applies to: Cummins Onan Mdkwb

Before you start

Only an experienced technician should perform this job

Procedure

Inspect the bearing for evidence of outer case rota-
tion every 1000 hours of use. The bearing should
be replaced every five years, because the bearing

Specs & torque values

Grease (moly)
O-ring

Source: manual:981-0512 Onan MDKUB MDKWB Service Manual (6-1994).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.