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G-MAN
05-23-2002 07:49:01
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Re: 4020D, coolant blowing out crankcase vent. in reply to Tim(nj), 05-22-2002 21:24:47
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Tim, your liner o-rings at the bottom of the bores could be leaking. If the tractor has the weep holes along the LH side of the block, check to see if they are plugged up. These holes lead to a dead space between the o-rings and are supposed to allow coolant to escape after it gets past the top ring, but they are usually plugged. Another possible leakage area would be the engine oil cooler, if your tractor is equipped with one. You might be able to remove it and have your dealer pressure-check it for you. As far as cost of an overhaul goes, it will vary widely depending on who you have do the work and what parts you use. Obviously an overhaul performed by a JD dealer with JD parts will probably be more expensive than some shadetree mechanic could do it, but it might be cheaper in the long run, and will probably have a better warranty. Just my two cents. BTW - basic engine overhaul kit with bearings and everything for a late 4020 diesel lists for around $1350 from JD - of course you will also have other odds and ends that you made need - belts, hoses, head work/valves/guides, fuel nozzles, etc. I would think that by the time you get all done, barring any major problems, you will probably have around $4000 to $5000 in it, parts and labor. Hope this give you some idea. Good luck with your tractor. ps - I forgot, you could also POSSIBLY have a cracked block or head, but I wouldn't think so, unless the tractor was badly overheated or something.
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