How to repair a TS shaft question?

Re: How to repair a TS shaft question?

John in NM

How do you know it needs to be repaired?

The scoring could be just cosmetic from the sound of it, so if the pulley goes on and doesn't wobble, all he needs is a new bit of key.

The best repair short of a new shaft is to knurl it and then grind back down to spec. There will be less contact area, but it works.

If it just wobbles a little, the loctite can do the job. Hard to remove, but loctite is generally broken by heat. If the shaft is really loose, I've shimmed in the past with some success. Not on a TS but in principle it should hold.

Re: How to repair a TS shaft question?

Tom Dunlap

When I was in college I worked for AEM, similar to Timesavers belt sanders. A trick I learned for fitting shafts was to clamp the small shaft in a vice and make a series of center punch pricks to raise ‘craters’. Then refit the shaft to the bearing or sheave

Loc Tite makes a product that is a gap filler for these sort of solutions too. I used it on a 2.25” shaft on the head of my brush chipper. Worked well!

Re: How to repair a TS shaft question?

John in NM

We had an AEM when I worked for a shop in Tucson. We did a lot of mesquite work and it was terrible for tearing out - made it worth having a wide belt in house.

Re: How to repair a TS shaft question?

Mike in Zuni VA

Barry,

When I was working on Subs at the Navy Yard we used a product on shafts to repair pits and scratches called Devcon Bronze. You would apply liberally to the shaft (we cleaned the shaft with acid before hand) and after it cured, you would remove the excess with fine emery paper down to the base metal. We repaired seawater valve stems that saw submergence pressure this way My father had a rear tine tiller that he picked up some wire around the shaft for the tines next to the gearbox. Needles to say it scored the shaft in the seal area and it constantly leaked gearbox oil after that. I tore the unit down, cleaned the shaft and applied the Devcon Bronze to the shaft, and then buffed it down. Reassembled with new seals and no leaks. That was in the mid eighties and when we sold his stuff last summer it still was not leaking.

Mike in Zuni VA

AEM question

Tom Dunlap

Hey,

Interesting...AEM was bought by a bigger company and moved to Kansas I believe. That was late eighties I think. The machines I built were the small ones. About the size of a vending machine. That job was one of the best ever. I learned so much about machines and how to repair/build/fabricate.

They built some big ones too.

Do you remember what AEM machine you used?

Re: AEM question

John in NM

It was a 36", looked like this one:

Probably bought around the mid 1990's.

Re: AEM question

Tom Dunlap

Thx! I rarely worked on the bigger machines. Nice memories.