I finally decided to try and repair my old iron 1945 Delta 14" bandsaw, model 892 (?) serial # 39-8027. Ever since I have owned the machine there has been a slight vibration when running at wood cutting speed. I was able to smooth it out some by adding lead solder to the blade wheel and wrapping it with metalic duct tape. This has worked for awhile but has always left a little vibration that I can feel when cutting on this saw. So I started to tear into it this afternoon. I took off the upper frame assembly, the table, the motor, pulled the direct drive pulley, and removed the reduction gear box. But I can't get any further. I can remove the lower blade wheel but can't get the direct drive shaft to slide out of the drive gear that engages the reduction drive system. One of the parts diagrams on Acetoolrepair shows that there is a collar with a set screw that holds the gear to the shaft, but I can't figure out where it is located.
So here is what I am finding. The drive gear can be rotated on the shaft by about 1/2 of a degree. This I found by grabbing the gear and trying to rotate it while holding onto the lower blade wheel. Also if I rotate the shaft either with the lower blade wheel on it or removed it will always stop with the key way of the drive pulley pointing down. This makes me believe that the imbalance is related to the drive gear that engages the reduction drive. But I stuck on how to proceed.
The two photos show the wheel side of the base and the input side of the base with the reduction transmission removed. I have not found any teeth missing from the drive gear and there weren't any broken parts in either the transmission or the base.
Any suggestion from anyone who has rebuilt one of these?
Jim
Wheel.jpg
Trans.jpg