D9H coolant temperature

[Bjt]

Thinking the ol gal is needing a freshening up with new coolant and thermostats due to running on the cool side, (140-160) is the highest the temperature has reached even on a 90 degree day after a few hours of pushing. What is an acceptable temperature for this engine doing low to moderate work around the farm assuming the gauge is reading correctly? It has the D353E engine with the spacer plate. 90V

 

[chidog]

Assuming the gauge is reading correctly, maybe that is the issue, have you checked it accurately?
180 is pretty much normal.

 

[Nige]

As above. If you’re working from the temp gauge on the dash it might pay you to confirm that with an infra red temp gun.

 

[tctractors]

A great place to target your heat gun is on the top side of the engine oil filter, as the temp recorded here will show you if the water temp regulators are working correctly.

 

[Bjt]

The top of the oil filter housing temperature reading was 166 degrees and the thermostat housing reading 156 degrees, while the dash gauge was only showing 140. Faulty gauge it seems. Thanks again fellas

 

[nicky 68a]

Personally,I’d never worry about an old D9 running too cool…….

 

[Shimmy1]

Personally,I’d never worry about an old D9 running too cool…….

No kidding