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Posted by David Sherman [24.32.202.83] on Monday, September 07, 2009 at 15:47:50 :
In Reply to: Question on Speedi Sleeves posted by Ron in Indiana [71.97.204.29] on Monday, September 07, 2009 at 15:15:05 :
That should be an easy fix. The sleeve comes with a metal cup that you can used with a mallet to drive the sleeve on when the shaft is short such as on a yoke like that. With most of the shafts I've sleeved, I've had to make a driver, usually out of some pipe turned on the lathe, but you won't have to do that.
They recommend leaving the tear-off flange (what the driver pushes against) in place unless it needs to come off for assembly purposes. They also recommend putting a thin layer of gasket sealer such as non-hardening permatex on the shaft both to seal the sleeve to the shaft and provide some lubrication. The sleeve is thin enough that standard-sized seals will fit over it.
If the shaft is very badly worn, which yours doesn't seem to be, it may be necessary to turn it down to a smooth surface, paying attention to exactly what size speedy-sleeves you can get and what range of diameters each will fit over, and then sleeving it, hopefully still large enough to seal with a standard seal. Another option they suggest on a very bad shaft is to fill up a deep groove or rust pits with metal-filled epoxy. Again, yours doesn't sound that bad. Yours is just a simple ordinary wear groove in a non-rusted shaft and a standard sleeve should take care of it.
The one trick is to make sure you get the sleeve positioned correctly on the shaft. If you drive it too far in, you have to tear it off and get a new one. The seal lip has to ride near the middle of the sleeve and the driving flange has to be where it won't interfere with anything. Since the wear groove is covered by the seal, figure out where the seal needs to go, mark the desired back edge of the seal on the shaft, and drive it to that point. So far I've never had one I had to re-do. Speedi-sleeves are not cheap, around $20 or so, but they can charge that much because the alternative is to flame spray it, turn it, and grind it to fine finish, which would cost a whole lot more, and require a good machine shop.
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