I bought a used saw and it won't raise or lower, along the column axis. I installed a new gear on the back end of the raising/lowering rod.... the previous one was missing. I don't know how long it has been since it has been raised or lowered and the column only had minimal surface rust, so I'm assuming it is not 'locked' by rust, though I have sprayed the suspect area (if applicable) with WD-40. All nuts and bolts along and in the column key area are tight. I don't see any type of locking mechanism, that I would need to release, in order to raise or lower it. The parts manual only has a diagram and the instruction maunal doesn't address the raising/lowering function at all.
Initially thinking it might be a rust issue, I turned the handle, to lower it, as far as it will go, then moderately tapped on the upper arm support/column area with a 4 lb shop hammer and a 2X4, end-wise, to no effect for loosening any rust, if stuck that way.
I'm at a loss as to correct my problem. I'm not eager to disassemble the column. Any suggestions?
Sonny