Cummins/Onan — Cooling System Maintenance
Maintenance · Cooling Fins
From a Cummins/Onan operator's manual covering: E124V Floorcare, E125, E140, MODEL E125H, MODEL E140H, P216, P218, P220, P224, P248V Floorcare. Check it applies to your exact model before use.
Applies to: Cummins/Onan E125, Cummins/Onan E140, Cummins/Onan HGJAA, Cummins/Onan HGJAB, Cummins/Onan HGJAC, Cummins/Onan E125H/E140H engine
Before you start
- Always wear safety glasses when using compressed air or pressure washer to avoid severe eye damage.
Procedure
- Wear safety glasses.
- Let engine cool, especially when using pressure washer. Temperature stresses from cleaning hot engine can crack cylinder.
- Use compressed air or pressure washer to clean cylinder cooling fins.
- Observe all manufacturer's instructions and precautions when using pressure washer.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan HGJAA →, Cummins/Onan HGJAB →, Cummins/Onan HGJAC →
Source: Cummins/Onan operator's 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.