Cummins/Onan — Oil Pump Service

Maintenance

From a Cummins/Onan service manual — check it applies to your exact model before use.

Applies to: Cummins/Onan MCCK

Procedure

1. Check oil pump thoroughly for worn parts.
2. Oil pump to prime it before reinstalling.
3. Except for gaskets, component parts of pump are not available individually.
4. The suction cup is available separately.
5. Install a new pump assembly if required.

Full service-parts list: Cummins/Onan MCCK →

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.

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