Posted by redjohn on October 05, 2012 at 18:08:30 from (74.33.71.44):
In Reply to: 720 diesel problems posted by redjohn on October 04, 2012 at 18:10:52:
Sereal # is 722.... from what I can remember.
After removing the flywheel and having the problem, I went to the manual, and found out about the end play.
there were no shims behind the flywheel, so I pushed it on. Will do the right thing, setting it, after finding the real problem.
Bushhog papa, mentioned to be sure to pull the decompression lever back, and see if it turns over.
I did that, and it rolled over. My friend, who has the tractor, mentioned to me, that he pulled the little dipstick out, on the clutch side, and stuff came out.
So I checked, and sure enough, oil and antifreeze came out.
I drained the oil, which was grey, and had antifreeze in it.
So now I either have a blown head gasket, or bad head, or block.
I did roll the flywheel over, and could hear gurgling in the radiator.
As I said, I'm not real familiar with this model of John Deere, and am wondering if these engines had a bad reputation for blown head gaskets.
5 years ago, it was overhauled by someone I know, and has worked on JD stuff for years. The motor was bored out .060, and when it ran, it ran beautiful.
Upon asking more questions, when my friend first got the tractor, he had to put in a water pump, as the one in it, was leaking.
Makes me wonder if the previous owner overheated it.
Please, all who did answer, gave me good advice, but now, I could use some more. The tractor is worth saving. It's just like going on a hike. You go over one hill to get to the lake, and find out when you get to the top, there are a half a dozen more hills to go over, before you get there.
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