[quote="Matt Thomas"](quoted from post at 13:06:25 07/07/15) I know your 420 is newer than my MT but just thought I'd toss this out there. My MT has no water pump and I didn't think the 420 did either...but I was wrong once before. If you added coolant.....or changed the coolant.....without premixing the water and antifreeze....that can sometimes (but not always) cause over heating in JDs with that famous "heat siphon" cooling. Something about two different specific gravities.[/quote]
Ok, everyone, I think I fixed the overheating problem. Here is one to keep on record in case this ever happens to you. First, I took off the large hose on bottom of radiator , and then took a garden hose from a high output residential hydrant. I turned it on full blast and the water was coming out full force at the bottom. I also had the top hose on the radiator off at the same time. I blocked the water from coming out of it. Then, I put everything back together. I did "NOT" install a thermostat. It ran for years and years with out one, so I left it out. Here is the thing that cleared up the problem. My muffler was really bad, was shooting out soot all over the heat shield ,and fuel tank. I think the super heated air coming out was the cause of the problem. Also , when I super flushed it, I may have also unblocked a possible clog. I started the tractor , let it run a bit, then I took it and mowed my lower field with it with a 5 ' bush hog. I worked it hard, and guess what ? It ran like a top, and never got over 170 degrees And this was running it on straight water only. When I was through, just a tad of water came out the top when I removed the radiator cap. I am going to give it a 50/50 mix of water/anti freeze, and change the oil. (it's due) My head gasket did take a strain because of the heat issue, there is a slight seepage of oil around gasket. Oil pressure was always high however. If your engine overheats. Check muffler, and flush radiator like I did. Thanks all of you for your suggestions !!!
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 - The Niagra View Mobile - Powered by a 1959 Ford Tractor - by Mark Massey. In 1959 the Niagara Frontier Transit Inc. of Buffalo, New York designed and built six Viewmobiles for the Niagara Frontier Sightseeing Inc. for use as a sightseeing ride at the Niagara Falls State Park, Niagara Falls, New York, powered by a 1959 Ford 611 Tractor.
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[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.
