Temp / coolant issues (Bobcat CT 225)

Ben in BC · Aug 12, 2015

Hi everyone,

My Bobcat CT 225 seems to be running hot. It will run in the middle of the temp gauge for 10-15 minutes at 2000RPM parked then once I start driving it, after 5-10 minutes will edge up to the 'H' end of the gauge. I've drained the rad and changed the coolant. I've cleaned the dirt screens, cleaned the filters. I gently washed with a hose the rad. I cannot see any leaks in the overflow coolant container, the hoses or the rad itself. The tractor has about 725 hrs on it; I keep it very maintained and am gentle with it.

Any ideas?

Thanks,
Ben
COmox, BC

devildog1 · Aug 12, 2015

Water pump?
DevilDog

Dave M7040 · Aug 12, 2015

I would be trying to verify the accuracy of the temp gauge before concluding you have a problem.
It is not uncommon for them to fail.
An infrared temp measuring gun from Northern Tool is about $40 and will be a big help in troubleshooting an over heat or bad sensor.
Ironton Infrared Thermometer | Vehicle Monitoring| Northern Tool + Equipment
Dave M7040

Ben in BC · Aug 29, 2015

Thanks DD - will give this a check.

Ben in BC · Aug 29, 2015

Thx, Dave; I will give this a whirl.

Jerry/MT · Aug 30, 2015

Ben in BC said:
Hi everyone,

My Bobcat CT 225 seems to be running hot. It will run in the middle of the temp gauge for 10-15 minutes at 2000RPM parked then once I start driving it, after 5-10 minutes will edge up to the 'H' end of the gauge. I've drained the rad and changed the coolant. I've cleaned the dirt screens, cleaned the filters. I gently washed with a hose the rad. I cannot see any leaks in the overflow coolant container, the hoses or the rad itself. The tractor has about 725 hrs on it; I keep it very maintained and am gentle with it.

Any ideas?

Thanks,
Ben
COmox, BC

The usual culprits for overheating are; Stuck closed thermostat, loose drive belt on water pump, faulty pressure cap, collapsing lower rad hose at high rpm, clogged air side on radiator, clogged coolant side core on radiator, clogged airfilter/intake manifold on diesel engine.