Cummins/Onan — Cooling System - Fill (01-07)
Maintenance
From a Cummins/Onan service manual covering: K 19, K19, KTA19, KTA19-M, KTA19G2, KTTA19, Kt19. Check it applies to your exact model before use.
Applies to: Cummins/Onan K 19, Cummins/Onan Kt19, Cummins/Onan K19 engine
Before you start
- Check the coolant level only when the engine is stopped. Wait until the temperature is below 50°C [120°F] before removing the pressure cap.
- Do not add cold coolant to a hot engine. Allow the engine to cool to below 50°C [120°F] before adding coolant.
Procedure
- Close the radiator draincock.
- Install the lower radiator hose(s). Tighten the hose clamps to 5 N·m [40 in-lb].
- Close the engine draincock.
- Close the oil cooler draincock.
- Fill with a mixture of 50 percent ethylene glycol antifreeze and 50 percent water to the bottom of the fill neck in the radiator fill tank.
- Install the radiator or fill cap.
- Operate the engine until coolant reaches 70°C [160°F] and check for leaks.
- Shut the engine off and allow it to cool; check the coolant level and add if necessary.
Specs & values
- Hose clamps 5 N·m [40 in-lb]
Full service-parts list: Cummins/Onan K 19 →, Cummins/Onan Kt19 →
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.