Posted by Paul in MN on July 13, 2020 at 21:05:23 from (65.128.191.233):
In Reply to: JD 336 Baler Kicker posted by UP Oliver on July 13, 2020 at 17:46:20:
Besides what the other guys have said, there is the possibility that your flywheel center bushing is shot and puts much more strain of the shear bolt. We just replaced that bushing on one of out 328 balers and it helped to reduce the shear bolt problem. If you replace that bushing be careful. You need to remove the flywheel and it weighs about 300 lbs. We used a portable engine hoist. If you can rock the flywheel left side to right side, then you have a worn out flywheel bushing.
The plunger knives can be sharpened and probably need to be. One is located on the cut side of the plunger head, and the other is mounted on the side of the bale chamber. Both can be removed without pulling out the plunger They are just bolted in. They act like the 2 blades of a scissors when hay is being fed. There is a spec for the distance the blades must be from each other, so they don't crash together. You make that adjustment with shims behind the blades. When I do not have official JD shims available, I make my own from sheet metal. Check your blade separation with a feeler gauge.
The distance throw wheel can be reset to whatever number you want to see, but I doubt that is your problem. I do suspect the return spring inside of the thrower's hydraulic cylinder is broken It can not be seen from the outside. Only by disassembling this cylinder can you find if the spring has broken, but it is a common problem with older balers.
We were running 4 JD square balers and one NH round baler on a field yesterday. It was quite a sight. The square balers were making horse hay, and the round baler was working on the lowland to make cattle feed and bedding.
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