Posted by Tim Stolar on March 10, 2013 at 20:39:06 from (173.86.147.113):
Hi,
I have a 1968 4020 Deere tractor with the diesel engine. Overall, the tractor is solid as hell, and aside from some seeping from quick connect fittings, it is as clean as hell.
I recently did a 12V conversion on the tractor with all modern Deere parts. Working for a John Deere engine distributor sure does have its advantage, and it is amazing that Deere does not change much over the years (the starter went in perfectly for instance,and it was originally for a modern Tier 3 6068).
At any rate, one thing that the modern diesels do not have are the weep holes on the side of the block. I know the history here on why Deere did it, and what the holes are for, but I do have a question that I am having a hard time trying to understand.
When the engine is shut down and has been sitting, things are a little damp on the block below the holes. Two of them (forward and rear holes) have a bit of weeping. The center hole does not.
When I start the engine up, they tend to weep a bit more than when it is shut down (pressure in the cooling system of course). However, after about 20 minutes of running, or until the engine is somewhat warmed up, they completely stop and dry out.
If the seals were going bad, wouldn't they leak all of the time? I cannot imagine that it is simply due to evaporation. I don't go through any antifreeze, and I don't burn or loose any oil. I have had oil scans done, and the oil is perfectly fine. The fluid coming out does not smell like antifreeze, and it is too clean to be engine oil, although it does have a very slight green tinge to it.
So, is it possible that they only weep when it is cold? I am not going to plug them up at all because they do have a purpose. But, my research has shown me that perhaps I might consider a major overhaul... But again, everything looks fine. Could it be just condensation leaking back out? That might make sense since Deere removed them in fear that air might deteriorate the seals.
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 - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
... [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.
