Hello again.

I noticed that the cam disengagement lever for my S7 mkII clutch would slip back to engaged if turning the chuck by hand which could result in horrible consequences.

So I disassembled the unit and found that the steel ball at the end of the push rod had gouged a nice groove into the cam shaft (picture below) meaning the cam can rotate back to engaged fairly easily.

As far as I can see I have three options:

A. Purchase a new one from Myford for £29 (probably not going to happen)

B. Remake the part – easy enough and I've just finished my Bedair style radius turner so it would be a good excuse to use this in anger for the nose. Question is – would I need to harden (temper) the part after? I've never had to harden anything before – how would I do this?

C. Get a mate to weld a bead onto the damaged area and grind/machine back to flat. I don't want to do this if it results in soft material however. How hard is a weld?

Any comments are greatly appreciated.

edit: If you're wondering how it got like this it turns out the little piece that is meant to house a small spring and the steel ball was the wrong way round, with the steel ball just stuck on the end with some grease – meaning the ball had no-where to hide when a force was acting upon it…  I am now wondering whether, if I re-arrange the parts as they should, it even needs repair….

Edited By Thomas Gude on 24/10/2014 12:09:26

Edited By Thomas Gude on 24/10/2014 12:09:46

Genius! Thanks Brian I will give that a go. Least damage.

In fact re-orientating the spring and ball to the correct way round makes it much better in itself. So will see how it goes.

Thanks

All good suggestions. I will report back. Unfortunately I have come across another problem as you when you start taking things aparrt and looking at them. the LH cuntershaft oilite bush is getting very hot and I can't for the life of me figure out why. I'm off to post a new topic in the hope I don't become a loner with my incessant S7 problems.

Cheers