Getting near completion on the step head Bridgeport but I have an interesting symptom and I wondered if anyone has any ideas.

Everything on the head works as it should, except when I use the quill feed lever to manually lower the quill. If the head is set in low range (back gear) and I manually move the quill down everything is silky smooth. If however I'm in high (straight drive via dog clutch) I get a slight vibration through the quill lever, is that normal? No obvious wear in the teeth on the bottom of the splined pulley hub or the bit it engages with. Obviously only when the motor is running, If I stop the motor it is smooth in Low & High.

Any thoughts?

Many thanks both,

David,

Just tried it with power downfeed and it is exactly the same so I don't think it is anything much worth worrying about, not making any noises just a very small vibration through the handle. I think the dog clutch may be a little worn as that is the only other part in the chain which could possibly contribute. Not a biggie but I may change them out at a later date. Looking at the prices I may give making them a go, I may put a bit of grease rather than oil on them and see if that changes anything.

Buchanman,

It still uses the same drive belt when in back gear (when it is smooth) so I have ruled out belt issues. I will replace the belts as a precaution once I've used it a bit as I don't know the history of the ones on there.

Regards

Bill