DC Overheating

[Jon Vidulich]

This might seem strange, but I changed my oil and filter the other day and now it gets hot enough to boil the water out of the radiator. Only thing I can think of is that I stirred up some sludge (pulled the side cover of to scrap alot out before adding new oil) and now it might not have good oil pressure?? No gauge currently. Or maybe the radiators plugged and the timing is a qoincidence?

Also, are the newer oil filters quite a bit smaller in diameter? The old one had a metal shell and the new one didn"t. I had to position it just right in order for it to seat properly. just seemed odd.

 

[olgentdc]

Be careful Filter may not be correct , Napa and local Case /Ih should have correct one...

 

[hoosier boy]

Be very careful here, I allowed one of my DCs to overheat,bushoging and let the radiator screen get plugged. It made the engine an oil burner - I sold it to a neighbor who was ok working on it. The other poster is correct re. the oil filter, I have the can type of filter holder you must be talking about and you use a drop-in filter element, NAPA has them. If you need a filter reference, I can hunt up one I have in the shop tomorrow.

 

[Jon Vidulich]

I beleive the filter I installed was a Hasting #18A101.

 

[DC3Z]

If your concerned about sludge inside engine take off the hand covers and look in see how much is there and wipe it out clean screen on opil pump at same time. Does your DC have shutters and are they opened?

 

[Ken in AZ]

I'd check to make sure they didn't give you the wrong filter first.

I also wonder what oil you put in. If you're running a multi-grade oil it could be incompatible.

Is the radiator flowing coolant? The tubes plug from rust. You can get in there and work on this if you're careful. A hose and a plastic wire tie can be your friend here. I used the wire tie to "rod out" the cores and the hose to flush the rust out the bottom of the radiator (after removing the drain plug).

Has your fuel mixture or timing changed? The exhaust on these run hot but if it's glowing you may have a timing issue or you could have some gunk in the carb.

And finally, are you now pushing the tractor harder now that you changed the oil and got it field-ready? It could be that the water jacket is plugged up with rust (a common occurrence on a 60+ year old tractor) and needs to be cleaned out before you ask for full power.

My experience with the D series is that rust will fill up around the sleeves and will also plug the passages in the radiator. The water jacket around the base of the sleeves is the hardest to get out and may result in scored cylinders if you don't clean it out before running it hard. You can do it without pulling the sleeves but if you want to do it right and you tear it down that far, pull the sleeves, get the half-bucket of crap out of there, put new o-rings on the cylinders, hone the cylinders and think about a new set of rings and service the valves.
It'll run and work like new and cooling shouldn't be a problem. Traction maybe, but not cooling. I've run several of them in AZ and the cooling system will keep up with the tractor working hard on a hot (110+) day here.

Ken in AZ

 

[Jon Vidulich]

Don't know if it has shutters or not, where would they be and what do they look like? I did put 10W-30 oil in it though, should I be running straight 30W? I also pulled a hand cover and cleaned around the pickup. When it first overheated I was doing nothing but letting it idle, so I'm not pushing it hard. Thought maybe I was idling it too low, so I tried my first attempt with the double bottom plow. Boy it plowed great, wouldn't even know I was dragging anything behind me. After that first 30ft furrow it was done though, bubbling out all over the place.

According to the previous owner the engine was recently rebuilt. I tend to believe him because the tractor runs so strong and doesn't smoke a bit. However, that was some nasty oil I drained out, so makes me wonder? Maybe recently means a couple years ago?

I'm trying to find another oil filter for it and see how that works out. If it doesn't I'll start on the radiator.

 

[JGarner]

Be very wary of the term overhaled. The previous owners definition of overhaul could be a valve job with no oil change. Some definitions of an overhaul are not equal.

I have a 630 that was recently overhauled before I bought it. Come to find out it had rod bearing knocking so bad he had to do something. I believe all that was done was new, maybe just different pistons and rings with rod bearings, over sized I guess cuz it doesn't knock. This overhaul didn't include a valve job or main bearings as my oil pressure at 3/4 throttle is only about 8-10 psi on a known accurate pressure gauge and I replaced the oil pump that was extremely worn. Before pump change pressures were on 3- psi.

I wasn't surprised as I expected the former owner was somewhat inaccurate with description and the price I paid was comensurate with the shape of the tractor but I got the model I wanted.

Jim

 

[Jon Vidulich]

Changed the oil filter, which was close but not right, changed oil to 30wt non-detergent and rodded/flushed out the radiator.

Overheating problem solved. I believe it was completely the radiator causing the problem, I pulled everything from bees to dirt out of that thing! Took a half hr just to chisel my way up the drain pipe, since it was so packed with dry dirt and gunk.

Now on to the next issue.

Thanks to all for the help.