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 - Product Review: Black Tire Paint - by Staff. I have been fortunate in that two of my tractors have had rear tires that were in great shape when I bought the tractor. My model "H" even had the old style fronts with plenty of tread. My "L" fronts were mismatched Sears Guardsman snow tires, which I promptly tossed. Well, although these tires were in good shape as far as tread was concerned, they looked real sad. All were flat, but new tubes fixed that. In addition to years and years of scuffing and fading, they had paint splattered on
... [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.
