dstyduhar
ArboristSite Member
After you get it all back together and you know it’s all lined up right. I mean you know, not you think so. I would go back and remove the set screws on the jackshaft and cutter shaft bearings one at a time and use a drill bit to make a small dimple under the set screw in the shaft, just a little flat spot really, then lock tite and lock em down till next time. Just my .02
I received that advice from a guy with 6 of these machines I bought a cutter shaft and jack shaft from, I didn’t listen, my jack shaft slid a few weeks later. After I re set the jackshaft I followed his advice. No problems like that since.
Good info. I know some people drill a hole and some have a flat milled in them. Just curious, which way did your jackshaft slide? Toward the clutch side? If so, that's what happened to this 252 I bought. I think it would be interesting to know which direction these shafts slide. Maybe there is a pattern? I know a lot of factors are at play so who knows.
I personally think it's a dumb design to have the set screws holding the shaft from walking....especially considering the shafts doesn't have flats or holes or whatever. Has anyone tried to use a split collar? Hell, put a pair of them inboard of each pillow block. Those would grab that shaft a hell of a lot better than two set screws, no?
thanks,
Drew