Cummins/Onan — Cooling water supply installation
Installation · Cooling system
From a Cummins/Onan owner's manual covering: CFP-015, CFP11E, CFP15E, CFP23E, CFP30E, CFP50, CFP59, CFP5E, CFP60E, CFP7E, CFP83, CFP83-F10…. Check it applies to your exact model before use.
Applies to: Cummins/Onan CFP23E, Cummins/Onan CFP83-F10, Cummins/Onan CFP83 engine
Before you start
- The cooling water supply must be immediately available when the engine is started.
- Do not operate without a pressure cap.
Procedure
- Provide a cooling water discharge line at the heat exchanger outlet and a supply line to the cooling water inlet.
- Check the pressure regulator setting on the cooling loop with water flowing through the heat exchanger.
- Adjust the cooling water based on water flow rather than water pressure.
- Measure the water flow using a container and elapsed time.
- Adjust both pressure regulators to provide flow at or above specifications.
Tools required
- Appropriate-sized container Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- CFP5E, CFP59, CFP7E, CFP83, CFP9E, CFP11E, CFP15E, CFP23E - 276 kPa (40 psi)
- CFP30E, CFP50, CFP60E - 345 kPa (50 psi)
- Cooling water outlet piping should be one pipe size larger than supply piping
Full service-parts list: Cummins/Onan CFP23E →, Cummins/Onan CFP83-F10 →
Source: Cummins/Onan owner'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.