| Author | Message | ||
     Glenn Tinkerer Username: Glenn Post Number: 573 Registered: 07-2006 Rating: N/A |
Presuming that you are aligning the parts at the original starting point, you should carefully examine the actual ends of the threads. Wear can produce very thin 'chisel' shaped starts, and these can very easily get deformed during the stripping and subsequent cleaning procedure. I use a diamond hone on the outer edge of both parts, to give a small chamfer. I have also found that on large diameter helicals, pushing the parts together whilst rotating will cause a jam. Pulling the parts 'apart' during rotation will allow the parts to be screwed together quite freely. Obviously one does not actually pull the parts apart, but once the threads engage just try and stop the leading edges of the threads rubbing together. The action is actually easier to do than explain, but once you experience success the action becomes automatic. |