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IH 685 Temp gauge/Cooling Upgrades

F

Formerly PaMike

Member
I have a 685 that I use for haying. Machine runs excellent but under load the temp will start to climb. Usually holds a little before the red on the gauge, but last night with the 90+ deg heat I had to drop back a gear pulling the discbine to keep from getting into the red.
Does anyone have a good gauge upgrade to something that shows the actual temp? This gauge just has a red zone, and I don't know how hot that really is. Also, any good cooling upgrades? I was thinking of maybe a 10 deg lower thermostate or a better fan?
Ideas?
 
Are you sure that there is no externalblockage of the radiator matrixwith dust &debris??

Inside the radiator is the water circulating correctly or are there blocked tubes?? You can find these by running your hand over the matrix and feeling for cool spots!!

Where are you as depending where in the world the tractor was destined for would determine which cooling packsge was fitted, temperate or tropical!!!
 

My vote goes for a radiator with external blockage of the fins due to pollen, hay, dust, etc. The 685 was significantly more work to remove the grill for blowing out the rad than the 684 was which makes this even more likely to be over looked. Clean out the hydraulic cooler while your in there.
 
Hi Mike, as others have said clean hydraulic oil cooler and rad. Very difficult rad to clean properly. Also watch lower rad hose when running at high RPM for signs of collapsing. If hose is collapsing it is time to steam clean the rad.
Thermostat or water pump problems as well?
Air cleaner clean?

Don't over heat it to boiling or there is a chance of blowing the O-rings on the sleeves.

JimB
 

Ditto what the others said:

Clean your rad and hyd oil cooler, it is a pain, at least the hyd oil cooler unbolts enough to pull it clear of the rad.
 
The rad doesnt look dirty. Its not clogged with LARGE particals, but there might be dust and dirt packed in the fins. I will check it out.
Thanks
 
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