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??? ??? MY bad , that's what i get for being late with my meds . I thought ya were talking bout the backgear engagement . The drawing is not a very good one showing all the lines to what goes

I saw your note and wondered if it was the same model as a 6" craftsman I have. Searched on Craftsman 101.21200 mk2. And some post came up from Homemachinest (?) Discussing problems with the drive

The question then becomes ... how...?? Don't want to destroy whatever is retaining the ball at the ID.? Drill out from the OD to expose the spring behind the ball.? Then how to close that opening

I would replace the ball and spring first. I have this lathe and have lost the ball and found one close that works.

I tried that group first, when I first got this lathe, last summer.? Lots, if not all have or are familiar with the 6" lathes.? Apparently I was not compatible, didn't make it though the new member

It appears to me that we are talking about different assemblies/parts. That page from my manual is provided below, with some colored elipses showing selected parts.? Parts 26-32, which are the back

??? Can ya get a pic or 2 of the 26-32 assy ? The parts list is calling out for 2 ball bearings . ??? thanks ??? animal

Posted a bit about movement of the ball in the grooves a moment ago.? I agree with you on the likely manner of getting that one ball installed.? I understand your though about the pin pushing the

Thanks, difficult relating without having one nearby or having had one.? Thanks for your interest.? I looked at those tubes.? One at least shows how the drive coupler works, but does not show it

Rick, I don't have a lathe like yours but looks to me that the spring and ball would be put it the blind hole and a pin pushed in from the thru hole side to depress the ball while sliding it over the

??? So I don't have one of these lathes so I'm tryin to match the parts list with yer pics? . So on the black part ya show with the 2 boss's , one on each side only one of those holes is a through

Neither.? Only one ball, total.? That one ball is shifted from the inner groove on the spindle to the outer groove when the drive coupler is moved from the "engaged" position locking the spindle

is there a ball on each end of the spring ? or is there a ball for each groove on the? spindle in the 7th pic ? animal

Found a better end mill, more full diameter shank, if I remove the plastic ring.

In the 2006 post, there was mention of possible wear on the dog teeth as the reason for the disengagement.? I've dealt with this on the helical bevel gears mentioned above, so I thought, sure that

Parts 26-31 are the back gear engagement mechanism.? I'm having trouble seeing how this could be the issue because it is fully disengaged (in the down ... and out position).? What is happening is on

??? ??? The parts list & dwg are not of much help trying to see how it works . There is a eccentric involved . Page 13 upper right # 26-31

When I got my 10" TH-42 lathe I bought an inexpensive set of MT-3 collets with a draw bar from Shars of Little Machine Shop. I think there are 6 or 8 fractional size collets in the set. That should be

Regarding doing anything with the spring, stretching or replacing, getting it out and being able to get it back together appear to be the unknown. There is only one ball detent.? I expected to find

??? ??? Have ya tried stretching the spring out some ? Some hardware stores have a pretty good selection of springs , ya may be able to match one up or maybe get close . ??? animal