I got a pretty old set of discs last year that were my wife's grandfather's. They are quite rusted, but not rusted away. I've churned the garden up with them a handful of times, and smoothed out some lumpy ground so I can mow it instead of brush hog it. Today I went out and churned up the garden plot with them, to incorporate some old hay. Mostly as an excuse to get some seat time since it's been so wet here... In the last 5' of planned discing one of the discs fell off the shaft. I recovered all the parts, but the shaft's threads are rusting off, so the big axle nut won't stay securely attached any more. This is not the first axle nut to have this issue, some before I got it and some after. So far what has been done is drill a hole through the nut & axel then put a bolt or bent nail in as a pin to prevent the nut from rotating or sliding off. I can do that to this nut as well, but I'm curious about replacing a few parts (axle, bushings). I can't find anywhere where a manufacture/model number is visible on it. My questions are:
1) Does anyone recognize what brand it is?
2) Is it worth trying to buy a few replacement parts for old discs like this, or should you jerry rig it as long as possible, then replace it?
3) How/where would you attempt to buy replacement/generic parts for something like this?
Because it was my wife's grandfather's, and because I don't use it super heavy, maybe 3-4 times a year for a 75'x40' garden. It seems like repairing it is the better option (if possible, at reasonable expense).
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