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Myford spindle drive

Drive between spindle pulley and small backgear.

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John Hall 6	24/03/2013 07:13:39
3 forum posts	I have lost the drive between the headstock pulley and the first gear in the low speed back gear. Is the drive via a key or a shear pin? Intermitent cutting on a faceplate did the damage and I hope it is reasonable uncomplicated to fix after removal of the mandrel assembly. Cheers to all John Hall
Brian Wood	26/03/2013 09:16:40
2742 forum posts 39 photos	Hello John, Ouch. I think I am right in saying all Myford spindle drives are by woodruff key. They did use pins for gear couplings on lathes up to the ML4 before switching to keyways there as well.. Not sure what you will find when you take it to pieces. Just a thought before you do that as you don't say which model Myford you have, but it could just be the manual key for back gear has been shaken out of engagement by the shock loading from intermittent cutting. Good luck anyway Brian
John Stevenson	26/03/2013 09:20:40
5068 forum posts 3 photos	The pulley is just a press fit onto the bronze sleeve gear. Drop of Loctite will do the trick.
John Hall 6	26/03/2013 11:03:00
3 forum posts	Thanks, Brian and John, I'll keepyou posted with results of my investigation, I hope it is not a wood ruff key or I'll need to cut a new key way! Cheers anyway and thanks again, John Hall

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