Cummins/Onan — Oil Filter Change
Maintenance
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA
Before you start
- Hot crankcase oil can cause burns.
Parts for this job
- 122-0833 Oil filter Amazon eBay $19.99 NAPA $9.64 FridayParts $20.19
Part numbers from the service-parts list for Cummins/Onan HDKA. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Spin off the oil filter and discard it.
- Thoroughly clean the filter mounting surface.
- Apply a thin film of oil to the filter gasket.
- Spin the filter on until the gasket just touches the mounting pad.
- Turn an additional 3/4 turn; do not over-tighten.
- Start the set and check for leakage around the filter gasket.
- Tighten the filter only enough to eliminate leaks.
Specs & values
- Turn additional 3/4 turn after gasket contacts mounting pad
Full service-parts list: Cummins/Onan HDKA →
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.