Hello farmallfarmer. Sounds like you may have an air flow problem. If the ac charge was low it would not get cool as you say it does when it is first strated. Your system probably has 134a as a refrigerant, and compared to the old R12 freon it carries a much higher high side pressure.Having gauge pressures readings would help on the diagnosis, when the unit is first started and when it failes to cool. If it was low on gas it would act the way you discribe,(I don't think so),Here are 2 of my guesses 1: Hot water is getting into the heater core see if you can feel the heater hoses.The old systems did not blend the heat into the evaporator, newer systems do so to controll cooling output. Heating output in BTU'S is about 3 times more than cooling BTU's. If the heater valve/controll is fully on the air conditioner will never catch up but If the system is fully charged it would be dumping water out of the drain like crazy.If you have the old type system the heater hoses should be warm to the touch not hot. I would run the unit until the cooling stoppes, and then blow air with a fan at the condenser and see if it makes a difference.There is many other resons for the unit to stop cooling including some of what the other posts suggested . Just something easy for you to try. Guido.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Good As New - by Bill Goodwin. In the summer of 1995, my father, Russ Goodwin, and I acquired the 1945 Farmall B that my grandfather used as an overseer on a farm in Waynesboro, Georgia. After my grandfather’s death in 1955, J.P. Rollins, son of the landowner, used the tractor. In the winter 1985, while in his possession the engine block cracked and was unrepairable. He had told my father
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
