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spankyjr1, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 2601
Experience:  I worked on all types of equipment semis,forklifts,farm,ect.
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I have 855 combings in a 9380 four-wheel-drive and I cannot

Customer Question

I have 855 combings in a 9380 four-wheel-drive and I cannot keep it from heating we put a new water pump ontwo new thermostats rad is clean if you pull the rpm down more than 75 rpm's temperature just keeps climbing
Submitted: 2 years ago.
Category: Medium and Heavy Trucks
Expert:  spankyjr1 replied 2 years ago.
Hi, my name is ***** ***** you for your question.
Are you loosing any coolant or is coolant going out radiator overflow?
Is engine fan coming on and fully locking up?
Did you verify dash gage reading for engine temperature?
Does this have a low flow cooling system? You would see two 1" bypass hoses around thermostats.
Let me know
Customer: replied 2 years ago.
No I am not losing antifreeze there's a new sending unit and a new gauge yes it looks like it has the low flow system he has a manual Drive Fan
Expert:  spankyjr1 replied 2 years ago.
Thanks for info.
I would just confirm engine temp against gage using a laser type temperature gun,,just point at block and compare to gage it should be within 10 degrees and they only cost about $20.
Copy and open this link to view temp gun.
With everything you have eliminated the only thing left is the internal seal in radiator that separates the cooling system to make it the low flow.
The radiator is actually two radiators separated by a internal seal and when it goes bad you overheat.
You will need to pull radiator and have it resealed or rebuilt.
Just a note: when you put radiator back in you must fill the side port or the coolant level will be low and you will overheat and blow a gasket.
There is usually a square plug on drivers side top of radiator that you remove and fill for the first time.After you fill that then top of top of radiator.
Any questions or problems let me know I'm happy to assist.
Thanks in advance for leaving a positive rating. If you happen to need more help, this question will stay open for weeks.
Customer: replied 2 years ago.
Is tractor has vertigo flow rad
Expert:  spankyjr1 replied 2 years ago.
You still need to get radiator rebuilt.
Everything else has been eliminated by what you already have done and verified by the questions I asked.
If it was something else there would be other symptoms along with overheat.

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