Here is a paste of two posts I made on the Short wing piper site a few weeks ago. The short summary is that it didn't work at 350 degrees, but worked perfectly at 550. I assume that it will be the same on the Matco. It has been a while since I had a Matco apart, but I think you can also split the wheel and just press the bearing out with an arbo press.
removing tail wheel bearing race ---------------------------------------------------------------------------- ---- I need to replace the bearing races on my Scott tailwheel. The race presses into the hub and the inside hole of the race is barely larger than the hole that goes the rest of the way through the hub. On top of that the hole in the hub is tapered so anything that you use to try to press the race out is smaller than the inside hole of the race when it just fits through the hole in the hub. There is also next to nothing to grip on the race with any kind of gear puller. I tried wetting a paper towel and stuffing it in a new race then putting it in the freezer while I had the wheel in the oven at 350. I took the wheel out and put the frozen paper towel which was now a block of ice the shape and size of the inside of the race in the race and that did not do the trick. I am going to try again at 500 degrees and see if that works. Any other suggestions? ___________________________________________________ I guess that I asked the question a little too early. Seems that at 550 degrees you can just grab the hub with an oven mit and slam it upside down on a piece of wood a few times and the bearing falls right out. I have the new races in the freezer now and the hubs with the races removed back in the oven and I should be able to just tap the new races right in. If they don't quite make it in all the way an arbor press will easily put them in. I hope that I save someone else the trouble of figuring out how to get the races out sometime. Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On Behalf Of Robin Wills Sent: Sunday, April 22, 2007 9:08 PM To: kr...@mylist.net Subject: KR> Removing Matco Bearings Gday all. The time has come for me to remove the supplied 5/8 bearings in my Matco wheels and replace them with ¾ bearings to match the axle I purchased. However, the bearings in the Matco hub are (or appear to be) an interference fit. And a tight one at that. Ive tried heating the hub in the oven to no effect, and was wondering if anyone can suggest a better way to remove these bearings. I need to get the plane on its own wheels so I can take it to work to rebuild the wings The archives didnt reveal any info about removing the Matco bearings, though the Clevelands were covered, but, unfortunately these notes werent of much help Many thanks, Rob. Robin Wills Second Person, Pacific National KR-2 19-4594, Ser # N111 <mailto:krvia...@bigpond.com> krvia...@bigpond.com _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net Post photos, introductions, and For Sale items to http://www.kr2forum.com/phpBB2/index.php please see other KRnet info at http://www.krnet.org/info.html
