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I just purchased a 2001 Max IV from a friend. It seems to work well except for a loud "thunk" sound that seems to be coming from the back left sprocket? It happens when making a sharp turn. When running straight and going slow it is fine. Any advice as to what it may be? Also does anyone know of someone who can work on this Max near Marietta Ohio/Parkersburg WV ? I can do most things myself, but need a jump start in learning how to troubleshoot this thing. Any advise would be greatly appreciated. Thanks.
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Look at the alignment of the sprockets with one another. Pay close attention to the rear idler sprockets that tighten the chain going to the T20. The metal brackets that hold those sprockets in place can sometimes bend and throw it out of alignment enough to pick the chain up and down when under load. You can just take the brackets and idler sprocket off and hammer the brackets flat. Just a couple of ideas.
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Jack the machine up and see if the axles push in or pull out of the machine. I had issues with the locking collar breaking the lip of the bearing. Going around a turn, the axle would shift and put the chains out of alignment. I'm not sure what year they put bolts on the inside end of the axle to hold them from moving in and out.Comment
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Thanks guys. I will check some of those things. My friend had special clamps put on the rear axle to keep it from moving side to side. He told me that year and model had a flaw in that area. I will check them to see if they came loose and make sure the sprockets are in line. Thanks.Comment
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I think you just answered your own question. It sounds like your friend rigged something up to temporarily fix a problem, probably what liflod mentioned regarding the locking collars and bearings. Go back and install everything properly, and you shouldn't have any more problems. If the locking collars or inner race of the bearing have broken, this will mean that you need to pull the axle and replace the bearings.Comment
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not to disagree with mike, but i own a '94 max IV. my locking collars on my bearings also broke the lip off of the bearings allowing my axles to move. if your bearings are ok, you can buy some two-piece collar clamps from McMaster Carr and install them on your axles both inside and outside to keep your axles from shifting. if you search this site you will find a video of one of our members installing these collars on his machine.Comment
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Please do, that is typically where the correct advice is found.Originally posted by TalSet View Post
Seriously though, you make a very good point. In my mind I was thinking a broken race and didn't address just a broken locking collar. A broken collar would be the best situation. When the OP said clamps were holding the axles in place, perhaps it is the same two piece locking collars that you are talking about. When I heard the word clamp, I pictured a trail fix with something temporary.
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I think Talset has it. I called my friend and that is what he re-explained to me. I plan on making sure the chains are tight, and the tensioner bracket is straight and nothing is out of line. Thanks for the advice. I will let you know when I get it done and test it.Comment
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Thanks Mike. I think this is why my bearing crapped out on the idler .I am now going to look a little closer.Originally posted by Mike View PostLook at the alignment of the sprockets with one another. Pay close attention to the rear idler sprockets that tighten the chain going to the T20. The metal brackets that hold those sprockets in place can sometimes bend and throw it out of alignment enough to pick the chain up and down when under load. You can just take the brackets and idler sprocket off and hammer the brackets flat. Just a couple of ideas.
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