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Boy, I dunno. Sure don't wanna disagree with John or Old 'cause I really, really respect both of these guys and hang on their every word. However, that 851 is a hay makin' brute and was designed/built to handle hay. You should be able to build crooked bales the rest of your days if you so desire and not hurt the baler in the least. That symptom just "screams" loose chain, frozen roller bearing(s), bent chain axle, misalignment or out of adjustment main chain. Pay particular attention to the tension on the chain when the baler is "empty". If it is too loose, links/bars need to be removed to allow it back into specs. The chain should never, ever touch anything but hay. No contact with any rubber rollers, strippers, or anything else on the baler for that matter. All that chain should ever touch is it's drive sprokets, guides, chain rollers and the darned hay. Also, check all of the drive chains. Loose/stretched drive chains can bend the bars like a pretzel. Are you using the self-locking nuts on the bar bolts? Are those forming cams working properly and are they aligned to properly reset to the chain as they should when the door comes down? Don't want to be an alarmist, but it sure sounds to me like your main chain has stretched to the point that it is just about ready to exit the baler the hard way. You certainly don't want that, 'cause that big, flyin' chain has a very nasty habit of taking sheet metal with it when it goes. :>( Hope ya get 'er goin', Allan
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