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wbrent
wbrent's picture
Belt replacement. LM-29
Had an incident today where the drive belt came off. I tightened the tensioner and carried on. But noticed I was at the end of the line on the tensioner. So later that day decided to pick up a new belt at the local auto parts store. Went ahead and swapped the belt. But the new belt wants to twist off. Adjusted the wheel to get it running flat but that sets the blade ahead of the wheel quite a bit. I remember having a hard time getting the Belt to stay on when I first put the mill together. I think I remember loosening the motor mount bolts to physically move the motor to line up with tensioner and wheel. Could the motor have moved? Any other things to check? Should I just try a few cuts with the blade in its current position ? Won’t get back to it til the weekend so thought I’d check with you all for ideas.
Bill
Bill's picture
It may be your tensioner cause you the grief I know it has on my saw a few times over the years.Adjusting the drive wheel is only for the blade not the belt.
wbrent
wbrent's picture
Thanks. Is the tensioner adjustable at all. Did you just have to replace yours.
Bill
Bill's picture
I never had to replace it and not sure if yours is the same as LM 2000. Had to adjust it either? in or out ? so the belt would ride in the center of the drive wheel.
wbrent
wbrent's picture
As far as I can tell my pulley does not adjust in or out unless I was to use a shim of some sort. On a whim I took the pulley off and turned it around. Not positive it is reversible but thought id try anyway. Tried one cedar log before turning in for the night and the belt seemed to run straight for those few cuts. I'll test it more over the weekend.
Bill
Bill's picture

This is how mine adjusts.

wbrent
wbrent's picture
Completely different on the LM 29.
r.garrison1
r.garrison1's picture
On the LM29, the tensioner is adjustable. I'll add a picture later when I get a chance if you want, but I've adjusted mine a few times. Basically, there is a bolt with a big nut coming underneath. I put a second nut on mine, so it didn't keep working loose.
wbrent
wbrent's picture
I know it’s adjustable to tighten a belt. In fact looks like there’s two ways to adjust. The bolt that pushes the L bracket which slides the pulley in a slot. But also the entire bracket can be loosened and swivelled. But it does not adjust outward and inward to help line up the pulley with the clutch and band wheel. That needs to be done when the mill is put together. I put my old belt back on and swivelled the bracket a bit. The Norwood tech assured me that the B82 belt does not fit properly and that is why it is not running true. Who knows. I ordered a Norwood belt just to have on hand in case I need it.
r.garrison1
r.garrison1's picture
Ah, now i know what you mean. If I recall, one day long ago, I took a bit of a hammer and pry bar to the piece, and modified it so it was in line. Almost forgot that part.
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