Cummins/Onan — Bearing Lubrication
Maintenance · Generator end bearing
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DFHA, Cummins/Onan DFHB, Cummins/Onan DFHC, Cummins/Onan DFHD, Cummins/Onan QST30 engine
Procedure
- Remove the four screws holding the bearing cap, then remove the cap.
- Remove the circlip.
- Remove the bearing cartridge housing complete with bearing.
- Re-lubricate or replace the bearing, applying pressing force to the inner face of the bearing only.
- Apply 2.74 oz (81 ml) lithium-based grease divided equally among bearing, cap cavity and cartridge cavity.
Specs & values
- Lithium based grease Mobilux No. 2 or Shell Alvania R3
- Temperature range -22°F to +248°F (-30°C to +120°C)
- Quantity 2.74 oz (81 ml)
Full service-parts list: Cummins/Onan DFHA →, Cummins/Onan DFHB →, Cummins/Onan DFHC →, Cummins/Onan DFHD →
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.