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Myford Super 7 - novice help for motor start up without damaging I motor or gearbox etc

I would like to check if the motor spins up but worried I case I damage it by just powering up and starting it

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Jason Thomas31/08/2021 21:23:06
3 forum posts
1 photos

Can someone tell me how to safely start the motor to check if it spins up ok?

Unfortunately my 85yr old father has gone into a care home and sadly his Myford Super 7 need to go to a new home. He always cared for it and was well greased and oiled especially before he last used it a few years ago. We managed to move it to my brothers home (Birmingham area) but had no involvement with since he bought it when we were kids. I last used a lathe at school 35years ago at school so forgotten everything.

Many thanks in advance

Jason

Jason Thomas31/08/2021 21:29:44
3 forum posts
1 photos

Here it is


myford super 7.jpeg

Ady101/09/2021 08:50:24
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4754 forum posts
715 photos

It's just a wee lathe so you can turn the chuck by hand

The closest part of the chuck goes down the way (anti clockwise)

You can also lift the belt cover and i presume pull the upper belt towards yourself

If you can't turn it something is engaged and others will help

Don't plug it in and switch it on blind if you dont have a clue

ega01/09/2021 10:57:51
2267 forum posts
188 photos

In the photo the clutch appears to be engaged ie when the motor turns it will drive the countershaft and spindle.

The clutch lever is the one with the knob at six o'clock; set it to four to disengage it.

Howard Lewis01/09/2021 11:53:26
5348 forum posts
13 photos

If you just want to check the motor, slacken the primary belt (On Myfords, the belt is tensioned by just the weight of the motor, so lift it, and remove the belt from the pulley.

With the motor unloaded, it should spin up.

Assuming that it is a single phase motor, when you switch off, just before it stops, you should hear a click as the centrifugal switch kicks in again.

(The switch makes contact when the motor is stationary, and powers the start winding. When the motor reaches speed, the centrifugal switch opens and de-energises the start windings, leaving the motor with power to just the Run windings )

If the motor does not spin up when the belt is refitted, you need to start checking, stage by stage, from the countershaft onwards what is causing the problem.

Howard

Jason Thomas01/09/2021 21:53:35
3 forum posts
1 photos

Hiya gents thanks you for the guidence much appreciated. I also had someone from Myford forum on facebook give my an extremely good walk though and now understand and happy how to go about it alontg with my own manual/guide homework Cheers Jason

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