Member postings for James Robertson

Try adamslube.com

james

Paul - that seems to be the answer to the question of the grubscrew. Thanks for solving that. I'll now get going with penetrating oil/thinners. I'll bear in mind your warning about the material that the pully is made of.

James

Thanks for all the advice Chaps.

Pierre - thanks for that link to the explanation of the backgear. It makes it very clear.

Ady1 & Keith - I've carefully checked and there is no second grub-screw. There is also no means of lubrication as there is no provision for an oil nipple. The pulley is well and truly seized onto the spindle.

I hope someone familiar with this lathe can offer some more advice as I really stuck now.

James

I have recently acquired a 1949 Myford ML7 lathe. There seems to be a problem with the spindle and backgear. If I engage the backgear the whole machine seizes up solid, even when the backgear key is removed.

My understanding of how the backgear works is that normally the Vee Cone Pulley Assembly is free to rotate on the spindle. Drive to the spindle is via the Backgear (bullgear) with the key engaged. To use the backgear one should undo the key and engage the backgear cluster with the lever. I stand to be corrected if I've misunderstood the method of operation.

I've removed the whole spindle from the headstock and the Vee Cone Pulley and backgear are locked on tight. I can move nothing. I did notice however that there was no oil nipple in the Vee Cone Pulley as shown in the exploded parts diagram. Instead there was a grubscrew deep inside the middle pully apparently locking the Vee Cone Pulley to the spindle. This can't be right - can it? Even after removing this grubscrew everything is still locked up tight.

Is this a bodge by some previous owner? How do I go about seperating the Vee Cone Pulley from the spindle?

Thanks,

James