help with Record CL4 VSL

[Elaine]

The motor pulley started to trun without turning the belt, I phoned record and they were really helpful said undo the two grub screws and relocate them into the spindle. Ah easy then, I think I have done that but there is now a noise that sounds like someone dragging a stick over park railings (remember doing that?) So either i have located the screw into the spindle, although the spindle is now turning or its something else. I have checked the rings on the spindle pulley and they are all ok. Does anyone have any ideas?? Do you know anyone near Congleton, Cheshire who could help me? Don't want to knacker it up completely by running it and not knowing what is going on. This, I know is difficult, but any ideas will be great at this moment.
cheers
elaine

 

[jumps]

it's the 'I think I have done that' which causes me concern Elaine!

when something changes (badly) as a result of something I have 'fixed' I tend to 'fix it' again as my first step. that sound is consistent with play in the location of the pulley and grub screws.

the grub screws are doubled, and have slightly different profiles between the top 'lock' one and the lower one that engages on the shaft or spindle. So the first thing I would do is release the belt, remove both screws from the shaft pulley assembly, then using a long v thin thing (technical term) would feel for the locating position on the shaft down the grb screw hole - if you had the shaft turning free in the pulley it's unlikely it was alligned when you retightened them last time.

you also need to keep the pulleys alligned with those on the spindle whilst doing this.

then refit the lower screw and tighten, add the top one and tighten, refit belt.

 

[Elaine]

This is difficult to explain. I have taken the screws out twice, looked through a magnifying glass, found the position and put the screws back. All aligned etc. I say i think I have done it as 1. the motor pulley is turning what it should be turning. 2. there is now a noise which makes me believe that something isn't quite right. 3 and probably most importantly, i came on here for advise as my concern means that i wouldn't use a machine that does not either feel or sound right. 4. Trying to find someone who could help fix it as I have work to do.

 

[jumps]

OK I will put it another way, if the screws are tight but not located correctly on the spindle when tighted you will get a noise that could be described in the way you have.

To isolate the possible area you could note the noise at a specific motor speed, change the pulley then re-run the motor to the same speed. Same noise frequency and it's motor/shaft side. New frequency and it's spindle/bearing side.

 

[Elaine]

Could someone let me know that I am writing in English???

 

[Paul.J]

It isn't the fan blades hitting the motor cover is it Elaine??
I had that sort of noise on my Hegner lathe.I just had to refit he cover correctly.

 

[Aled Dafis]

I think Paul may have the answer, in fiddling with the motor shaft/pulley you've probably accidentally leanton the fan cowling, moving it slightly and as Paul mentioned, the fan is now probably rubbing against the cowling. It's happened to me in the past, and your description of the noise produced it pretty much bang on. Just loosen the cowling bolts slightly and re align it.

Cheers
Aled

 

[Deejay]

Morning Elaine

You said in the OP The motor pulley started to trun without turning the belt

That implies that the belt was loose or the main spindle was not turning.

What Paul and Aled suggested sounds good to me. If that doesn't solve it, start again from the beginning.

Unplug the lathe, slacken the belt and position it so that it doesn't engage with the pulleys. (I can do this on my DML but I don't know if there is room inside the CL4 headstock)

Keep your fingers out of the way and run the motor for a few seconds. Vary the speed. If the noise is still there, it's coming from the motor side of things.

If it goes away with the belt off, it's likely to be the driven side.

While the belt is off the pulleys, make sure that it hasn't been damaged.

Check that the driven pulleys are tight on the main spindle. Unplug the lathe. Put a chuck or faceplate on, and try to turn one against the other. Check that the spindle turns and that there is no slack in the front bearing by pulling it from side to side. Check that there is no end float in it by pushing it left and right.

Check the alignment with a small straight edge against the side of the pulleys.

Make sure nothing is fouling the inside of the headstock.

HTH

Cheers

Dave

 

[boysie39]

Could someone let me know that I am writing in English???

Yes you are.
Are you having problems reading the advice you are being given ??? It is in English too .

 

[Wildman]

I also suspect the fan cover on the end of the motor. sound as though you have now fixed the pully. adjust the fan cover and all should be well. If you feel you are being misunderstood try explaining another way, we all think differently.

 

[Blister]

Do you get the noise with the belt off when you turn the spindle ?

Or when you turn the pulley attached to the motor ?

 

[Elaine]

Thanks guys. The main bearing needed adjusting, which I did and it all is working as smoothly as ever. Just needed some gentle persuading (hammer)

Takket være dem som gir råd som er klar og ikke nedlatende

 

[CHJ]

Takket være dem som gir råd som er klar og ikke nedlatende

You're welcome :lol: that's what the forum is all about.
Surprised at the Record advice, if the motor pulley was spinning then that would indicate that the grub screws on the shaft were OK.
The fact that the headstock was not turning indicated that something was too tight or jambed.

 

[Elaine]

HI Chas
Record were right about the motor pulley, the shaft was spinning but not turning the belt. I fixed that via the grub screws. I then wrote that 'I thought I had fixed' because it was turning but there was this noise, which caused me to doubt that 'I had fixed it'
The bit about I am writing in english, was the point that i was trying to help with was did anyone know someone near where i live who might be able to help?? That was either missed by all or I should of just wrote that sentence and nothing more.
So, I managed to work it out. And as is usual on here there were some helpful responses. So I am up and working again, which is pleasing.
I guess that writing anything down is read differently by most people.
But grateful as ever.

 

[CHJ]

HI Chas
Record were right about the motor pulley, the shaft was spinning but not turning the belt. I fixed that via the grub screws. ..........I guess that writing anything down is read differently by most people.
...

But you wrote

The motor pulley started to trun without turning the belt

'pulley', not 'shaft', which is what I read, and got me confused after what record advised, just goes to show even a word can confuse.

 

[Jonzjob]

Elaine, please don't get upset by what we understand of what you tought that you have said.

It is very easy to put what you think you mean and it come over very differently. Unless you are an engineer then your discription can be misleading. I spent a year in a specialist centre for IBM working out customer faults and worked out that why the hell doe need to know how a phone works to be able to use one?

I think that I can speak for all of us when I say that we will try to hell everyone who asks for assistance. Sometimes the questions are difficult to discern, but with a bit of patience we can usually help.

I am nowhere near where you live, but I will allways try to help if I can :mrgreen: :mrgreen:

 

[boysie39]

Elaine, glad you have got things sorted out, the people on here are usually a very helpful group.
They will do everything they can to solve any problems asked of them. A few namely me and me again :roll: reply
without putting a little thought into what has been said before.
So as you were not being short with members I apoligise if I was short with you
Welcome to the forum .

 

[Elaine]

All is well. I was frustrated as I have a deadline to meet, once I had walked away from my lathe, asked for help, went back with a little more patience, i fixed it. I was rushing, so my engineering terminology might not have been spot on. I knew what I meant, so I now understand that doesn't mean others know what I mean :roll:
i can usually join in (and do) on the forum, with all the help and the banter that comes along. So thanks to all. The community on here has always been helpful whenever i have requested help, and so it continues. =D>
now, i have to get back to making money.

 

[Jonzjob]

"i have to get back to making money."

A forger :shock: :shock: :shock: :shock: :shock: :shock: :mrgreen:

Good luck