Quote:
Originally Posted by Redblower
When I got it there was a "C" clip on the end, a key and 3/8-16 set screw, the key way on the pulley is "worn out" so the key rolls over even though the set screw is tight with red loctite.
After I drilled the other hole out, 90 degrees from the key way, the first 1/4-20 bolts I put in were just long enough, i.e. threads in the contact area. After 2 of those broke I put in a grade 8 that is long enough, 2 1/2" if I remember right, that is is almost all "shank" in the contact area. I like the idea of getting even a little longer and using washers.
I think my big problem now is that the pulley is so worn that it is wobbling on the shaft, as mentioned earlier, I hope it's the pulley and not the shaft.
Vic
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I'm sorry, I missed that yours was a problem with the pulley. My pulley had a square head bolt holding it on.
Quote:
Originally Posted by cnysabo
Well, maybe your onto a better design which would be great! There doesn't seem like there is anything that you've done that you can't undo if it doesn't work as well as imagined. I would just probably back off on the belt tension a little at first and increase it accordingly. Only because I once blew the oil seal out from behind the pto on my 1641 when I was mowing the garden down... I guess the corn stalks and broccoli stalks were a little hard on it. It seemed like a good idea at the time, in fact it still seems like a good idea because I still tend to do it with a slight apprehension each fall. Anyway, the seal was easy enough to replace.
One other thing that I just realized, and maybe it's already been discussed... but in the parts diagram, the 3/16" parallel key (part #35) is only shown on the sprocket end of the shaft, but not on the gear box end even though the groove is cut in the shaft for it. Also the shear pin is shown on the gear box end. So this leads me to believe that is the place Haban intended to shear. Which is the easier access of the two and it is the way my H48 came.
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You are correct, it does appear that Haban wanted the "sacrificial" part (shear pin) to be at the gearbox, the sprocket end was not intended to shear. One of the previous owners of mine, must have lost the key at the sprocket end, and never replaced it.