M9540 running hot

[Ferrisgeorge]

I have a M9540 tractor for 3 years with approximately 1800 hrs on it. During bushhogging with a 15 ft batwing mower over a hay field it starts running towards the upper end of the temperature range. I have blown the air filters and radiator filters thoroughly. All fluids are clean and up to date. Running engine at 2200. Blew air through the radiators. Any ideas on how to proceed.?

 

[Tooljunkie]

What engine rpm you running?
Possibly cooling system flush is necessary.
Valves adjusted -that is if they are adjustable.
Belts tight, rad cap holding pressure?

 

[Daren Todd]

I would try flushing the fins with water and degreaser first. Especially if you have a fan that blows air through the radiater from the engine compartment. The bottom half of the fins can get coated with bug guts and blowing it out sometimes doesn't get them. Blower fan will also get a hot spot in the middle of the radiater and if the air flow is reduced on the bottom, it will cause temperture to creap up under heavy loads

 

[North Idaho Wolfman]

There is the possibility that it's not really running hot, it could be just a bad gauge or a bad sending unit.
I would get a manual temp gauge and check it with that.

 

[Glovelis]

Just bought a M8200 with 780 hours. Hooked it up to my 10 ft Rhino rotary mower today and the same thing happened. I was mowing in the heat of the day and the temp gauge gradually moved to the red. I shut down and noticed water reservoir was bubbling and coming out overflow. I let it set for around three hours, cleaned radiator with air, went out again. Gauge didn't quite make the red section on the gauge but it was close, shut down, no bubbling and no overflow. Of course this time it was quite cooler outside. What is normal temperature gauge location? Heat index was close to 100 here today. How can I make the tractor run cooler? Ferrisgeorge, did you figure anything out?