- Joined
- Sep 28, 2013
- Messages
- 4,394
Dissassembled the QCGB today, remind me not to do this again in a hurry - oh wait, I have to take it apart again
Boy, what a hassle. I was tempted to leave this as is, but all the felts that I could see were solid blocks of nastiness and several other bits of the lathe had blocked oil holes and the like, so in I went.
wasn't too hard to get apart, though I forgot to line up the splined type gear on the back shaft with the key, which caused an upset. Longitudinal pin in that gear wasn't too hard to get out either. No pin in the front shaft nut.
Getting it back together though, oh boy. It was all going swimmingly until it came to getting the far left gear on the back shaft pressed on. Tried all kinds of approaches, including a brass drift (warning, these gears are surprisingly soft!). What finally worked was spacing the center sliding gear and the right hand gear apart, and then driving the shaft into the housing.
Front (lower?) shaft was a royal pain, raised a burr on the thread so had to take everything apart again, but finally got it all together.
There's a periodic binding that I think is being caused by the back left spline type gear as it no longer freely rotates on its shaft but binds once a revolution. Probably a burr or upset from pushing the key into it. I'll take it apart tomorrow again and see what's going on. At least this time will be quicker!
Little wear on the gears from what I can see
took some 320 grit wet'n'dry to the threading plate and very carefully sanded the raised part of the plate. Makes it a lot easier to read now.
wasn't too hard to get apart, though I forgot to line up the splined type gear on the back shaft with the key, which caused an upset. Longitudinal pin in that gear wasn't too hard to get out either. No pin in the front shaft nut.
Getting it back together though, oh boy. It was all going swimmingly until it came to getting the far left gear on the back shaft pressed on. Tried all kinds of approaches, including a brass drift (warning, these gears are surprisingly soft!). What finally worked was spacing the center sliding gear and the right hand gear apart, and then driving the shaft into the housing.
Front (lower?) shaft was a royal pain, raised a burr on the thread so had to take everything apart again, but finally got it all together.
There's a periodic binding that I think is being caused by the back left spline type gear as it no longer freely rotates on its shaft but binds once a revolution. Probably a burr or upset from pushing the key into it. I'll take it apart tomorrow again and see what's going on. At least this time will be quicker!
Little wear on the gears from what I can see
took some 320 grit wet'n'dry to the threading plate and very carefully sanded the raised part of the plate. Makes it a lot easier to read now.
)
