Clausing 5914 VariDrive Wobble

Joe

Wish I would have seen this before I went to the shop today. I did find the spare plastic bushing, it's a red or maroon plastic and I'm guessing that it's the piece for the movable motor pulley half.

If the damage is to your fixed pulley half and not to the motor shaft I do have the complete motor pulley assembly (I haven't tried to remove the fixed half from the motor shaft as of yet). I also have the original motor but it probably needs new sleeve bearings, side to side play is undetectable but it probably has about 5 thou vertical play, as a guess. It's heavy and shipping would hurt.

I have most all the other drive and hydraulic parts available as well.

If it turns out you need these other parts we'll work something out. I need alittle something for them to help defray VFD conversion costs:)

I won't have a chance to get back over to the shop again until next Friday.

Regards Paul

More of a brownish if it is current stock.

Fits either pulley after you bore it to fit.

Wes

Well, thanks for finding it. I'm sure it will find a home, given how common this problem is, so the effort will not have been wasted.

The bushing in the lower pulley on my machine is brown. Perhaps someone before me replaced the bushing. And forgot to tighten the setscrews.

My understanding is that upper and lower pulleys take the same bushing. In my manual, only one part number (049-088) is given.

I wonder what the green coating is. Acetone makes it sticky, so it is not teflon. Nor does it feel like teflon.

It turns out that the damage is largely to the end of the motor shaft, with little damage to the pulley. As mentioned in another posting, after some hi-spotting and careful filing of high spots on the motor shaft (right near the keyway, which had become funneled and bulged), it went back together properly, and there is very little residual wobble.

Is there any way to oil the sleeve bearings in the motor? Or a need to?

That would be fair, although I don't yet know what I will need. Who knows what else I will find as I learn this machine, repairing things.

Joe Gwinn

My specimen definetly has a reddish hue to it. Can't say as to its vintage as it came with the machine, in a box of misc parts stashed in the cabinet under the tailstock end.

Paul

No idea, there was no greenish stuff in evidence when I took that pulley apart.

Good for you.

Usually sleeve bearing equipped motors have some sort of lubrication means, oil cups or grease zerks. There's zerks on the old motor, it still coasts for some time when given a good spin by hand.

One thing to check is the balance spring under the speed adjuster, it's a flat clockspring in a housing. Mine was broken when I got the machine, I 'fixed' it which lasted for awhile until it let go again. The speed adjuster works without it but requires more force to adjust. I acquired a used one via ebay but hadn't got around to installing it when a good deal on a VFD came along.

Paul

Green loctite?

Gunner

"Pax Americana is a philosophy. Hardly an empire. Making sure other people play nice and dont kill each other (and us) off in job lots is hardly empire building, particularly when you give them self determination under "play nice" rules.

Think of it as having your older brother knock the shit out of you for torturing the cat." Gunner

I've heard it referred to as teflon by others. I wish some one that is familiar with anti friction coatings could identify what this coating is.

The typical repair if this coating is bad is to coat with Moglice 1000 Semi and then turn back to size. Followed by machining the Delrin AF (I think) bushing to fit.

Wes

I wouldn't think so, as locktite needs to be confined between metal surfaces to cure, while this stuff seems to have been applied as a paint. And acetone makes it sticky, which I don't think happens with cured locktite. Is locktite slippery? I don't recall that it is.

Joe Gwinn

I forget when your machine was made. Mine was made in 1972. Perhaps the green coating was a later (or earlier) addition.

I suppose we could cheat -- call Clausing and ask.

I didn't find any obvious places to put oil or grease. Perhaps they used permanently lubricated ball bearings. The motor does turn freely, taking some time to coast to a stop.

The balance spring seems OK. I'm still bleeding the air out of the hydraulic system.

Joe

I've got it written down somewhere, but 1967 comes to mind. Looking at the picture of the green coating someone else posted I can say if mine had that coating its long gone, there's no green in evidence. Either it never had it, or someone removed it in an earlier repair, or it now looks just like steel:) I would think if was just worn away there would be some remaining somewhere.

Paul