Remove rusted steel bearing from aluminum housing?

Bonnewagon

Geezer
Thread starter
Sep 18, 2009
8,275
113
Queens, NY
It used to be made by TRAVACO and the two old gents that invented it used to be at all the boat shows. They lugged around a big chunk of an old row-boat. Part of it was coated with the Marine Tex, part was coated with GLUVIT , and the rest looked like it was raised up from Davey Jones' locker. Gluvit is a flexible epoxy used to seal wood, aluminum, and fiberglass. Very good stuff. Now these are made by ITW Performance Polymers in Pennsylvania. https://itwperformancepolymers.com/products/marinetex/ They also make DEVCON products. Any Marine store would have it even Home Depot. I used the GLUVIT on the outer hull of a 1969 aluminum skiff. It never leaked a drop.
 
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Max Headroom

Master Mechanic
Sep 8, 2011
398
63
If a taper bearing and you are trying to extract the cup, then weld it out. You wrap a cold wet rag around the outer case or carrier and just leave the race face exposed. Or tape everything to be protected off with duct tape or McGiver tape or even multiple layers of masking tape.

Then you warm up your MIG welder or stick welder and make a single pass in the middle of the race face all around the face. The heat from the weld causes the bearing race to shrink as it cools and the shell becomes loose and pops out. Done this a few time before with aluminum wheels and it works fine. Just keep the pass on the steel and keep the aluminum protected and covered. Once you pop the race out let the housing or casting cool naturally; no water or air blow dry.

Had the brother of a old friend use his stick machine to make the passes on an aluminum bike wheel and he had never seen this done before and thought we were nuts! Worked as advertised and boy was he amazed.


Changing wheel bearings in aluminum hub - welding method - Bing video






Nick
This works most of the time. I have done it three times and it worked twice. I had a welder friend try the one that didn't work and he got it out.
 

Bonnewagon

Geezer
Thread starter
Sep 18, 2009
8,275
113
Queens, NY
Man am I glad I found out about this robust tool. OTC makes it. The puller head folds down to get behind the bearings. Then it folds over and grabs the bearings from behind. Even with lots of penetrating oil it was a chore to extract the bearings. Now that this parts gearcase is empty of rusty bearings I can clean it up and use it for a re-build. IMG_0276.JPG IMG_0277.JPG IMG_0275.JPG
 
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