Cummins/Onan — Camshaft Bearings
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
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Procedure
- Steel backed, babbitt lined camshaft bearings are not flanged.
- Must be line bored after being pressed into cylinder block.
- Replacement not practicable without proper equipment.
- Press front camshaft bearing in flush with outside surface of cylinder block.
- Press rear camshaft bearing in flush with bottom of counterbore receiving expansion plug.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.