I’ve got a komatsu excavator (pc45 mr-3) that has recently began to overheat when tracking or under a load after about 30 to 45 minutes.
I’ve checked the coolant and flushed first. Hydraulic and engine oil levels are proper.
Started out first changing out thermostat and temp sensor. Still overheating
Changed out water pump next.
Still over heating. Cleaned the radiator and did a little better but still overheating.
Just installed a brand new radiator and ran for about an hour and still overheating. I haven’t let it get to redline level but it is over heating after working for about 30-45 minutes still.
I can idle down - open up the access doors and it will cool down to proper temps in a matter of less than 5 minutes.
Any ideas or suggestions?
I’ve checked the coolant and flushed first. Hydraulic and engine oil levels are proper.
Started out first changing out thermostat and temp sensor. Still overheating
Changed out water pump next.
Still over heating. Cleaned the radiator and did a little better but still overheating.
Just installed a brand new radiator and ran for about an hour and still overheating. I haven’t let it get to redline level but it is over heating after working for about 30-45 minutes still.
I can idle down - open up the access doors and it will cool down to proper temps in a matter of less than 5 minutes.
Any ideas or suggestions?