Clicking in my Jet mini,,,,,,,FOUND IT!!!

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stevers

stevers

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Hi All,
I've had my Jet JML-1014 VSI for a month now. It is making a clicking sound in the head stock area. It sounds like it's coming from the bearing area. As the shaft turns, the click occurs at every full revolution. (It clicks every time around, at 12:00.) The click is not very loud. But definitely noticeable, especially for a "new" lathe. As I speed the RPMs up, the clicking speeds up. It clicks at all RPMs. As the RPMs get way up, it is harder to hear, but still there. I have placed my ear on the head stock unit to listen for it. It is definitely more pronounced near the top of the unit. The indexing mechanism is NOT partially engaged and is completely clear of the spindle.
I know this is a lot of info, but I want you all to understand what I'm hearing.
Some will say, "just send it in". But I don't want to do that. And I have no repair facilities near me. (at least 100 miles) I would just as soon have the parts sent to me and do it myself. I just got it and I don't want to loose it to the service centers for weeks or months.
I'm just hoping someone else has had this happen and has a simple solution.
Thanks for any info and suggestions.
 
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You got to be kidding.....not nearly enough information!! This kind of thing is pretty tough to diagnose. Maybe a JET tech who had dealt with hundreds of problems could solve it; but his solution would be more likely to be based on past experience than on just the symptoms listed. The above is my way of saying I have no idea what the heck the problem is; but I can offer you some things to look at that might help you track down the problem.

First off clarify what you mean when you say the click occurs when the shaft is in the 12 o'clock position?? I have a 1014; but have not seen the new one yet. On my lathe, the only way you could give a clock position for the shaft would be the hole in the spindle that accepts the knock out bar when loosening or tightening a faceplate or chuck.....and there are two of them on my lathe so you would never know whether you were at 12 or 6. I guess you could use the screw that holds the handwheel on the spindle; but, as I recall, there are two of those as well.

OK, try the following and see if anything jumps out at you:

1. Grab the hand wheel, push and pull on it to see if there is any movement along the axis of the spindle....should be none.

2. Open both access doors and look inside of the headstock and using a good light rotate the spindle by hand and see if you can see anything rubbing. Grasp each pulley as best you can and try to wiggle them to be sure they are firmly attached to the motor shaft and spindle.

3. Same thing but turn on the motor and see if you can see anything....keep your fingers well clear so you can hang on to all of them.

4. Loosen the locking lever on the motor mount and prop up the motor somehow so there is no tension on the belt. Switch on the motor and hold the handwheel so it doesn't turn. Is the clicking gone??

Now that I think about it, the min speed of the lathe even with VS is going to be around 500 RPMs so it would be pretty tough to figure out that 12 o'clock thing so so I assume you are spinning the spindle by hand and hearing the noise. Do you also "feel" a roughness or anything in the wheel when you hear the click? If you have a bearing that is damaged enough to make a noise, you should definitely be able to "feel" some indication of it in the hand wheel when you turn it past the point where the noise occurs.

Let us know the results of the above and maybe someone here can get a handle on your problem.

If we can't figure it out, you should definitely make a call to Jet on Monday and see what they have to say.

There may be some other things you should check; but it is well past my bedtime and I'm not firing on all cylinders right now.....may have missed a thing or two.
 
Check your belt. My belt was coming apart and a piece of it was hitting on another part on each revolution and making a similar sound. As I increased or decreased the speed the frequency of the clicks would increase and decrease also. Maybe that's it. Hope so.
Do a good turn daily!
Don
Originally posted by stevers
<br />Hi All,
I've had my Jet JML-1014 VSI for a month now. It is making a clicking sound in the head stock area. It sounds like it's coming from the bearing area. As the shaft turns, the click occurs at every full revolution. (It clicks every time around, at 12:00.) The click is not very loud. But definitely noticeable, especially for a "new" lathe. As I speed the RPMs up, the clicking speeds up. It clicks at all RPMs. As the RPMs get way up, it is harder to hear, but still there. I have placed my ear on the head stock unit to listen for it. It is definitely more pronounced near the top of the unit. The indexing mechanism is NOT partially engaged and is completely clear of the spindle.
I know this is a lot of info, but I want you all to understand what I'm hearing.
Some will say, "just send it in". But I don't want to do that. And I have no repair facilities near me. (at least 100 miles) I would just as soon have the parts sent to me and do it myself. I just got it and I don't want to loose it to the service centers for weeks or months.
I'm just hoping someone else has had this happen and has a simple solution.
Thanks for any info and suggestions.
Click to expand...
 
Don,

Good point. I had something similar happen to me...with my car. I had the ticking sound and it increases as I rev, turned out to be a damaged/pried belt.
 
OK, I found it. Not sure what I found, but I found it. I pulled off the hand wheel to look around. It has a spring washer behind it. I put this back together and the sound stopped. So I took the hand wheel back off and put a light film of grease on the spring washer. This just seems to me like it would be a place where there would be a slight amount of friction. I don't know why this HW and spring washer would cause this, but it has stopped doing it. And I am happy. Maybe a small piece of debree got in there. I did have the HW off once right after I bought it, you know looking around. Put it back on the same way I found it.
Future info for the rest of us 1014 owners.

Oh and Thanks folks.
 
Originally posted by its_virgil
<br />Check your belt. My belt was coming apart and a piece of it was hitting on another part on each revolution and making a similar sound.....
Click to expand...

Don makes a good point and checking the belt is certainly something that should always be kept in mind when there is a noise or vibration in the headstock; but it doesn't really fit the description of Steve's particular situation. When the belt is on the big diameter of the spindle pulley, the spindle turns about 2-1/2 times for every revolution of the belt and when the belt is positioned on the smaller diameters, the revolution differential is even greater. So when you have a noise with each and every revolution of the spindle, the belt is less likely to be the problem. Another thing is that you probably won;t hear belt problems when spinning the handwheel manually. You will most likely, only pick up a belt noise under power.
 
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