| Author | Message | ||
     Mike Thomas |
have an 1850 gas that overheats within minutes of start-up. Have replaced water pump, cleaned and cored the radiator and removed the head and had it cleaned out. Any recommendations are welcome | ||
| Chris Losey (Admin) |
Did you replace the thermostat? And if you did replace it, did you get a conversion kit for the thermostat? I believe this tractor has a new style of thermostat. This new style requires a spacer plate to make it work properly. I am assuming that you had the head checked for cracks and to make sure the deck is flat. If all of this was done, and a new head gasket was installed, it almost has to be the thermostat. Let us know. | ||
| mike thomas |
We did replace the thermostat, but I didn't know about the need for a spacer plate. Will give it a try....thanks | ||
| Mike |
Do you have a suggestion for where to locate the converstion kit and an estimate of the cost? | ||
| Chris Losey (Admin) |
I might have one. I'll check tomorrow and let you know. Other than that, your local AGCO dealer should be able to help you. Go to http://www.agcocorp.com and click on North America. Then on the next page click on dealer locator. I'll try to find a price for that kit too. I also want to make sure my memory is correct too. I'll verify that it was the 1850 gas that had the new style thermostat. I'm pretty sure, but not 100%. | ||
| Mike Thomas |
We have talked to the local agcocorp rep and they aren't aware of the conversion kit. Also talked to a couple parts dealers and they are also unfamiliar with it. I was even directed to a retired Oliver dealer who remembered something about a smaller thermostat that needed a plate to help fill in the opening. The thermostats (have tried two) each fit perfectly into the opening. I am going to try running the tractor without the thermostat to see if that eliminates the overheating problem. I would still welcome any and all ideas. | ||
| John |
I had similar problem with a 1650 gas a few years ago. Turned out to be 3 cracked sleeves. The cracks would open as soon as the heat started and close rapidly on cooldown. Dealer I bought it from provided sleeve kits and its been a great tractor ever since. When mine was started you could see the temp gauge rising steadily soon after starting. | ||
| Chris Losey (Admin) |
Mike, Sorry for the delay. I looked up the kit and here's what I came up with. I don't have the spacer plate, but I do have a thermostat. Here are the part numbers and prices. The prices are from 1999, so they may be higher now. 30-3129918 spacer plate. $19.49 30-3056430 thermostat $75.83 I can't guarantee that this will fix your problem, but I believe the purpose of the spacer is to lift the thermostat up so that it can open farther. It might be worth a try. There was also a rubber gasket listed with the other two parts. There was no description for the rubber gasket, but I think it replaces the paper gasket. 30-3061248 gasket $1.99 John has a good suggestion too. You should be getting bubbles from the exhaust gasses in the coolant if this is the case. You could also check your thermostat with a thermometer, a pan and some water on a stove top. Put the thermostat in the water and turn on the heat. As the water gets in the 160-180 degree range, the thermostat should start to open. I wouldn't recommend running the tractor without the thermostat other than for a diagnosis like you are trying to make. Hope this helps |
