Cummins/Onan — Oil Seal Replacement
Repair & overhaul · Gear cover and oil base oil seals
From a Cummins/Onan service manual covering: P216, P218, P220, P248. Check it applies to your exact model before use.
Applies to: Cummins/Onan P216, Cummins/Onan P218, Cummins/Onan P220, Cummins/Onan P248
Procedure
- Remove the gear cover and oil base to replace the oil seals.
- Drive the oil seals out from the inside, being careful not to damage the oil base and gear cover surfaces.
- Fill the space between the lips with a multi-purpose grease before installing the new seals.
- Clean old sealing compound off of the gear cover oil seal mounting surface.
- Install the gear cover oil seal to the dimension shown in Figure 10-27.
- Use a seal expander when installing the oil base oil seal; install the seal flush with the outside of the oil base.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Install the gear cover oil seal to the dimension shown in Figure 10-27
- Install the oil base oil seal flush with the outside of the oil base
Full service-parts list: Cummins/Onan P216 →, Cummins/Onan P218 →, Cummins/Onan P220 →, Cummins/Onan P248 →
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.