Posted by NCWayne on October 23, 2014 at 21:30:43 from (173.188.169.54):
I just posted this on the JD forum but wanted to post again here, too, in hopes someone will see it and I'll have some sort of answer, and/or idea what the problem is, before I've got to work on this machine again tomorrow. If you look on the Deere forum there is a link to Deere's parts site showing the o-ring in question that keeps blowing.
I've got a customer with a 2030 that he uses to do his haying. Last year he called me with a blown o-ring on the pressure regulating valve. The link below shows the valve on Deere's site, as number 8. I replaced it with a new one. This same thing happened several more times with me putting in a new one each time, until we thought the problem was solved...even though we didn't know what the problem was.
This year he has run for a month or so with no problems. Today he called me once again with the same o-ring blown. I replace it this morning and he headed straight to the field. A few hours later he called saying it had blown again.
Now nothing was done to the tractor, that either of us know of, that would have changed anything to all of a sudden make that o-ring blow like it's been doing. I've tried both 70, and 90 durometer O-rings, checked both surfaces for flatness, etc, etc. Basically I've done everything I know to do to insure the o-ring has a clean, flat seat, as well as being of sufficient toughness to insure it seats, and to keep it from blowing, with absolutely no lasting results.
Tomorrow I plan to pull the valve apart and see if I can find anything inside that looks like it might be causing the problem. I'm hoping I find something, but I'm not holding my breath.
That said, has anyone here ever had this problem, and what did you eventually find as a cause? Thanks in advance for any assistance ya'll can provide.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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