B7800 with 600 hours over heating.

[MAXA]

This seems to be a common issue with this tractor, guy has cleaned the radiator and screen, radiator is full, radiator fan is going, fan belt looks very warn, new air filter still over heats.

It even over heats if you are just moving it around the yard carrying light items takes about 45min in 80F

I have read to use a Infrared Thermometer on the engine to see what the temps are but i don't know what location on the engine to check? and what the temps should be. He said when he changed the air filter there was a nest in there is it possible for something to build a nest past the air filter blocking air.

It is my elder friends tractor.

 

[InTheWoods]

With the engine stopped, grab the fan and see how easily it slips - the belt may be too loose.

You say he cleaned the rad and screen. I'd double check that very carefully, to be sure there's no dust/dirt deeply embedded in the fins.

 

[TheOldHokie]

This seems to be a common issue with this tractor, guy has cleaned the radiator and screen, radiator is full, radiator fan is going, fan belt looks very warn, new air filter still over heats.

It even over heats if you are just moving it around the yard carrying light items takes about 45min in 80F

I have read to use a Infrared Thermometer on the engine to see what the temps are but i don't know what location on the engine to check? and what the temps should be. He said when he changed the air filter there was a nest in there is it possible for something to build a nest past the air filter blocking air.

It is my elder friends tractor.

Thermostat.

Dan

 

[MAXA]

Thermostat.

Dan

Could it be that simple? What coolant do you guys use just 50/50?

 

[TheOldHokie]

Could it be that simple? What coolant do you guys use just 50/50?

Yes, its that simple and I would also say its almost certain. Long life antifreeze (ELC) mixed 50/50. And before you ask pick your favorite color.

Dan

 

[GeoHorn]

Remove the radiator cap…. and make certain the coolant is actually circulating.

A stuck thermostat ….or a water-pump impeller loose on the shaft…. cannot circulate coolant.

 

[MAXA]

He's going to the dealer today and buy a Thermostat and pick up some new Zerex G05.

He doesn't think the coolant has ever been changed.

Can the water-pump be checked by just seeing if the pump spins freely?

 

[TheOldHokie]

He's going to the dealer today and buy a Thermostat and pick up some new Zerex G05.

He doesn't think the coolant has ever been changed.

Can the water-pump be checked by just seeing if the pump spins freely?

No but the old thermostat can be checked by placing it in a pan of water and heating it on a stovetop.

Dan