4430 over heating

[onefarmer]

My 4430 has picked up a habit of running hot all the way to overheating. I so far have cleaned the radiator. This last spring it overheated to the point of blowing the top tank. When I had it repaired the shop rodded it out and flow tested. Last winter it had a leaky pump so it got replaced with new. I have changed the thermostats fairly recently. I'm considering removing them to see it helps It doesn't use any water, (unless boiling over). Am I missing anything that would make it run so hot? Oh and the fan belts are tight and not slipping.

Thoughts and ideas?

 

[rrlund]

I had the one on my 4040 rodded, but ended up having it re-cored. The top blew off the one on my White 2-105 too. That one was so full of lime they wouldn't even try to do anything except re-core it. I ended up putting a whole new radiator in my 2-135. I couldn't get that one cleaned out either. Just ended up causing a lot of leaks.

 

[Tx Jim]

I read where you stated fan belt belts weren't slipping but do fan belts backs extend out past edges of belt pullies? When you stated cleaned radiator did you clean inside & outside of the radiator?? Are all radiator fins tight to the tubes?

 

[JD Dave]

Have you carefully inspected for dirt through the fins with a light? Some radiators are just barely adequate and need every square inch of the core to be squeaky clean.

 

[NoDakInMN]

One thing to check is the amount of wear on the pulleys. If the pulley is worn, the belt rides lower in the pulley and can drop fan rpm considerably.

 

[buickanddeere]

Any cooling system that has been filled with tap water instead of distilled water . Saving $5-$10 on distilled water cost 100’s and 1000’s later on.
Sounds like the rad has been removed and the fins properly cleaned . For those who reach in with a compressed airline or water line and figure that the the cooling fins are clean . Nope, not going to accomplish the desired results .

 

[joeysmith]

One thing to check is the amount of wear on the pulleys. If the pulley is worn, the belt rides lower in the pulley and can drop fan rpm considerably.

This would cause the rpm to increase
I suppose it could possibly cause the water pump to run to fast an cavitate causing heating issues though

 

[onefarmer]

Have you carefully inspected for dirt through the fins with a light? Some radiators are just barely adequate and need every square inch of the core to be squeaky clean.

Yes I had the radiator shop fix the top tank and thoroughly clean it inside and out. When I got it back I double checked it while it was out. It looked perfectly clean. What I didn't ask is if there was a core that have another row or tubes in it.

I was concerned with the pulley wear so when I got the new water pump I got a new pulley. So no wear and new belts.

 

[Roger in Iowa]

Don't forget the crank pulley. It wears out also.

 

[Fixingfarmer]

The coolers ahead of the radiator in good shape? I’m not sure if they slide out for cleaning like my 4440 but would assume there’s a condenser and oil cooler up ahead of it

 

[ET]

Do you have a combustion leak into the cooling system? Have you checked injection pump timing?

 

[Okie Haymaker]

I won't venture to guess what is wrong with your tractor but I'll tell you what worked for me. I did just about everything talked about here. I took an air compressor to the field to blow the dust out of my 4230 at least 3 times a day, eventually I bought a complete new radiator, replaced fan belts, and even rebuilt the water pump. I had already replaced the thermostats once and when I went back to my JD dealer to do it again I told him I wanted thermostats 20 degrees cooler, he argued with me and told me I was making a mistake. I did it anyway and in the 20 years since the only time it starts to heat up now, I know it's time to blow the dust out of the radiator, condenser, and the outside grills. If I'd done that first I probably would have saved myself at least a thousand dollars. Granted, all I use this tractor for is to pull a 10' disc cutter/conditioner and to stack hay with.