My D4h2 1990 overheats.will overfilled transmisson cause overheating.
Dennis, welcome to the forums ....... The simple answer to your question is yes, but that's over-simplfiyng matters. We need a bit more info in order to be able to steer you in the correct direction to get to the root cause of your overheating issue, which is I assume why you posted in the first place. First up, give us some background. Did the problem start suddenly, or has it been slowly getting worse over time..? If the latter then how much time are you talking about, weeks, months, years..? What sort of work does the machine do and how many hours/week do you work it..? What have you done so far to try to diagnose or fix the problem..? A machine Serial Number (so that we know exactly what model we are dealing with) would also help. There are some very sharp people on here who can no doubt help you, but crystal balls are in extemely short supply.
I bought this tractor last May.....have been clearing trees and brush out of fence rows.....have flushed radatior. ..blowed it out....replaced thermostat....new 180dg and a new cap..on 50dg days it runs around 180 to 200.....torque converter temp runs a little hotter....
D4h2Catapillar overheating I bought this tractor last May......have replaced themostat...cap....flushed and blowed the fins out. ...on 50dg days it runs around 180dg .....warmer days it gets around the 200 dg range if im pushing it hard...dont have theS.N. with me but its one of the first d4h2seris.....what is considered overheated on this tractor.
200 on a warm day (80+?) when you're pushing it hard is fine. As long as you're not losing coolant it's fine. Can you see the top of the tubes inside the radiator, and see through the radiator front to back? Usually junk builds up between the oil cooler and the radiator that you can't see. Also check the belt for tightness, glazing, worn pulleys/rounded out. If you want to pursue it further, take temps of the radiator top and bottom and the air in and out with a non contact thermometer, when it's at it's hottest.
200F equates to about 93C. If those temps you mention are taken from the gauge then the best confirmation would be temps of the top and bottom coolant hoses from the radiator taken using an infrared thermometer.
Thanks for your help....i need to drain some fluid out of the transmission...dont know where the filter is on this tractor. ....or the best..easiest way...i know to much fluid will make a 4040 J.D. overheat...it was overfilled when i bought it.....
I also replaced the belts...can see thru the radatior but the coolant that was in it was rusty so i run cleaner thru it and put a 50/50 mix in.
The temperatures will tell you what's plugged up, if it's the air side or the coolant side. Rusty coolant, did you get all the loose rust out so that you could run it an hour with clean water and no sediment would come out when you drained it? Or reverse flush the radiator, with the hoses removed run a garden hose in the top, and an air blow gun with a rag around it in the bottom. When it fills and overflows, hit the air, repeat. Maybe wait till summer.
That doesn't sound good. What 50/50 coolant are you using..? As Delmer said an infrared temperature reading from the top and the bottom hose (thus giving the delta across the radiator core) should answer more than a few questions as to whether the core tubes are significantly plugged internally. Dennis, you are not the first and I'm sure you won't be the last person posting here who is of the opinion that his radiator core is clean externally but when it really gets down to it the air flow over the core has been significantly reduced by plugging. Just 'cos you blew out the core don't assume that it's flowing air like it should. If I was you I would also be looking at condition of the pulleys (all of them), the belt tensioner setup, etc, etc. A new set of fan belts isn't necessarily the complete solution. As another aside, what oil are you using in the transmission..? If you have never changed it since you bought the tractor then I suggest draining and refilling with an SAE 30 oil meeting Cat TO-4 specification plus replacing the filter should be one of the first items on your "to do" list.
Thank you ....where im working i havent had access to a water hose....as far as the fluid i was told they drained and changed filter....just over filled it...i have been told working slopes its ok to overfill 10%.....but to bring it back to proper leval...as you can tell im not familiar with this tractor...have had Case and Deere....again thank you for your info.
Do you have an Operation & Maintenance Manual for it..? eBay is as good a source as any. Still waiting for you to post a Serial Number.