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Tractor Talk Discussion Board

Re: Engine rebuilding 4020 john deere


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Posted by rustyfarmall on September 28, 2004 at 06:37:52 from (216.248.75.153):

In Reply to: Re: Engine rebuilding 4020 john deere posted by New-Gen on September 27, 2004 at 21:31:06:

Even though I have Farmall as part of my handle I have been into more of the 3020 and 4020 engines than any others, and what you are saying about the O-ring grooves is correct, it cannot be stressed enough. Getting these grooves perfectly clean is critical. Also I have heard that these engines are getting old enough now that the grooves are becoming eroded away and it is tough to get the o-rings to seal. I think there is a cure for it but I don't know what it is.


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