- Joined
- Oct 22, 2019
- Location
- Saint Paul, MN
No. the sheave and small gear are to be considered a single piece. The sheave pulley disconnects only from the large bull gear by pulling the pin when using the backgear function
The gap you mention is set by the sheave and gear hubs- I think it's about 60 thousandths (0.060") normally
mark
There's a set screw on the bull gear that locks it on the sleeve that it rides on. When I got the lathe there was enough room on the sleeve for the pulley to disengage from the small back gear.
sandmanred,
The written instructions from Atlas or Clausing aren't too clear on this point. The collar to the left of the small spindle gear should be firmly against the step or shoulder on the spindle. Then the bull gear is slid towards the cone pulley and its set screw tightened against the spindle. End float of the cone pulley should be around 0.005" to 0.010". Unfortunately, the shape of the right side of the cone pulley and the left side of the bull gear makes using a feeler gauge to set the pulley end float impractical.