myford super 7 mk1

[Desmond FarthingParticipant @desmondfarthing48201]

Hello Nobby & Clive. Good news, I stripped down the headstock of the Super 7, after studying a borrowed Myford S/7 manual, and the article by “Richmond” in MEW issue no. 139. This was quite straightforward, although I mistakenly removed adjusting rings (Items 14, 2 off) which retain the ballraces in place, instead of just loosening them, which caused a bit of a problem in assembly . On inspection the spindle surface and the mating phosphor bronze bearing were in extremely good condition. Quite rewarding on a machine on the wrong side of 50 years old. The first attempt at assembly was a failure, I just could not get the spindle to mate up sufficiently tight in the P/B bearing. After carefully realigning the ball races I started again, with a bit of horizontal pressure on the spindle as the R/H adjusting ring was tightened, this succeeded. With hindsight the procedure was not difficult, but there were slight problems to overcome. With the Cone Pulley Assembly and the 60 tooth Back gear held together, not forgetting to put the drive belt in place! there is little room for manoeuvre in the headstock casting, bearing in mind the location of the woodruff key fitted in the spindle, which must be persuaded into the matching keyway in the back gear.

The distance between the back gear and the casting is about 1/8 ins.and, and as the spindle is pushed into the P/B bearing, eventually the woodruff key can be seen, and after a bit of fiddling enters the keyway. In a way it was an enjoyable if not frustrating exercise. and I have learned a lot about the headstock workings. I feel confident that I could repeat the exercise without reference to the manual. I have now a copy of it in A4 size which is excellent, containing details of the early ML7, which mine is. It cost £6.75 inc. postage on E-Bay, well worth it. I did not find the cause of the fault, and can only assume that it may have jumped out of drive when the chuck key struck the bed, and I never bothered to check it. Whatever the cause, the experience was useful.

 

 

[Desmond FarthingParticipant @desmondfarthing48201]

Hello Nobby & Clive.

Correction to my last message. 4 lines from the end it should read MLSuper 7.

Regards,

Des

[NobbyParticipant @nobby]

Hi Des

Good news its what this game is all about I learn something new every day

. I worked at a place that supplied bearings. I went back to see the guy & he said if I done the post like I used to for the day. He gave me a matched pair of the back bearings for My S7 Mk1 .I’m in the process of making a new nut for the x slide on my Drummond flat lathe But having problems. You may have seen on this on recent forums I cant use the Myford as the x slide spindle is stripped down.

Regards Nobby

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