Posted by andy r on November 05, 2021 at 21:49:39 from (208.126.193.44):
I noticed the temperature gauge on my John Deere 6620 sidehill was running hot. I question whether it is right and if the gauge has went bad? I know what a hot engine does - once the automatic tightener broke which I believe was on the fan. The engine heated right up and made the radiator cap release. The gauge is in the top category but the radiator is not boiling over. I had just washed the fins on the radiator to remove bean dust. Also, the coolant had been topped off. All of the belts are on and tight enough (fan, water pump, and rotary screen). When running I can see coolant rushing across the top of the radiator when the radiator cap is off. Coolant is 50/50 mix. Certainly I do not want to harm the engine, but I can't see anything wrong. I want to finish my last 40 acres of soybeans. Just remembered that I did change the alternator at the beginning of harvest so maybe I need to recheck that belt as I believe it runs the water pump as well. Could I have a stuck thermostat? Should I take the thermostat out? Thanks for your ideas.
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