Cummins/Onan — Crankshaft Seal, Rear - Replace
Repair & overhaul · Crankshaft Rear Seal
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan MDKBH
Procedure
- Disconnect and connect battery cables, engine wiring harness, fuel lines, exhaust hose, coolant hoses
- Drain and refill engine fluids
- Remove and install soundshield, starter, generator drive belt, engine coupling assembly, flywheel
- Remove and install bearing case cover, oil seal
- Visually inspect for oil leaks
- Test run unit
Full service-parts list: Cummins/Onan MDKBH →
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.