Mounted my sanding disc to my table saw yesterday to ease the edges of
some 1/4" thick mounting brackets for a new top for my mobile
workbench. Started up the saw, everything sounded/seemed fine.
Put my ear protection in. Started to grind a coupla pieces. Weird
noise, but I thought that the sanding disc at work was the cause.
Finished easing the edges and pulled my ear protection outta my ears.
THUNK THUNK THUNK (at 3400 bpm)!
Frick. Something stuck in the saw? Open the cabinet. Nothing. Fire
up the saw again. THUNK THUNK THUNK. Weird. Huh. Take the belt
off. Spin the arbor. Smoooooth. Spin the motor. Smoooth....
Remove belt, try to move pulleys on arbors. Nope. Not by hand.
Put the belt back on. Slowly spin the motor. Thunk. Thunk. Thunk.
Take belt off. Noise gone again. Put belt back on. Thunk. Spin
motor backwards. *Very*
light thunk. Check alignment of belt ribs
with pulleys. Adjust so there is 'misalignment' of belt (shift ribs
over 1 slot on one pulley). Thunk disappears briefly, comes back.
Observe both pulleys relative to thunk timing. Hmmm... perfectly
synced with the motor. Damn. Frick. Thing is like maybe a year
old. Well, got a five year warranty. Thank god for that.
So, I have very little desire to remove the motor from this puppy -
three horse's gotta weigh like 150 pounds.... Gonna be a giant PITA
for sure. Maybe it's fixable without removing the motor?
Anyone have a suggestion that isn't gonna make me cry?