Posted by Lebby on March 02, 2014 at 11:50:52 from (71.82.165.19):
First post here so please bare with me...
We have a 70"s IH 674 gas that has a problem of leaking coolant. Site of the leak is where the water manifold and the water pump come together to act as what appears to be a water passage to bypass the thermostat. When we replaced the expired head gasket, during disassembly, we noticed clear silicone (alot of it) had been shot into and around this area to help with the rubber "grommet" that is used to butt these two pieces together. Obviously it had been leaking for the previous owner.
We used a new head gasket set which included the new "grommet" which we used. All surfaces were clean and true.
After reassembly, when checking the coolant level between uses the level would drop. Site of the leak is/was at this point where the two pieces mate.
What appears to be happening is, during use at operating temp, the surfaces expand and sealing is accomplished. However when the tractor is shut off and cools down things must contract and at that point allow the coolant to escape allowing a low level in the cooling system.
At this point in time, I am considering a couple of things. In hind sight maybe we should of applied some silicone sealant on the grommet when we put this back together. The other thing under considerstion would be block the existing passage holes and relocate and drill two new holes, insert a couple of pipe nipples and use a length of hose to complete this passage.
I"m not the worlds greatest mechanic but I would rate this design as an engineer"s dream gone bad.
Wondering if any one else has experienced this same dilema and if you did... How did you deal with it?
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 - Some People Like Red - by Art Willis. I was smitten, as a little boy, by red tractors. I used to play in the coastal sand of my Dad & Mom's home with little red tractors, trucks and cars. I grew up believing that like fire trucks, ALL tractors are supposed to be red! Today, the only way I would drive a John Deere is if someone would paint it RED! Driving a Tractor for the first time - About 19 years ago, when my wife Donna and I moved to what was the country then, I was given access to a large Farmall tractor by a wi
... [Read Article]
Latest Ad:
For sale Farmall super A tractor is complete and has just been setting for awhile,it was running when pulled out of the barn,shouldn’t take to much to get it going asking 1100.00
[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.
