Jake Smith
Well-known member
I'll toss the mechanic a homeowner's tip that might not be worth the paper it's written on:
As I've bought attachments over the years, I've read that those lift arm pins I see in your pic (and that I have on nearly all my stuff) can snap off with heavy attachments when you hit something and there's sudden stress. The preferred type are the U bracket type where the pin goes through two holes and the arms pull straight forward in the center, like this:
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But you can't be choosy when you buy used.
I got to worrying about it when I bought the box blade because of its mass and having it occasionally snag and suddenly stop on a heavy root. It occurred to me that the greatest risk is when the lift arms wander to the outside of the pins (like the left one in your pic), where the lift arm gets leverage and might snap the pin. So I got some 3/4" PVC pipe and cut some shims, like this:
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You slide on the lift arm, then the shim, then put in the pin. This keeps the lift arm snug against the frame (and the base of the pin) so if you get a sudden *jerk* on the attachment, you're pulling straight forward on meat of the pin at the base where it's attached, rather than the arm wandering to the outside of the pin and possibly snapping it off.
I have no idea if that makes a difference or not, but it makes homeowner sense to me. I cut sets for the different length pins I have on my attachments. But it is the box blade that concerns me the most.
I think that's a great "idea", John, making spacers for the pins, but I've just replaced them when it happens, thus far. I need to take a few minutes to make some myself too. "Thanks" It's always good to be creative about things and make them better. Makes me think about when I was changing out the truck engine last month, and I decided to do away with all the smog shit they put on my truck; made it run 10 times better. No "regrets", on that one and over the years I've found lots of poor designs on things, where they did it, for it to break and they would make more money when you had to buy the parts again. Follow the money.
