I'm not sure what you will gain by heating the whole assembly unless there is significant difference in the Thermal Coefficient of Expansion in the materials (i.e., the bearing material does not expand as quickly as the wheel.). If you have access to an arbor press, you may want to try that after you have tossed the assembly in your freezer for a day or so, then soaked the wheel portion (only) in water, or gently applied a torch to the wheel (and I do mean cautiously and slowly while applying some pressure). I don't think a drift and small sledge would work as well as consistent pressure applied with a press. You may even be able to get them out without the miscellaneous thermal excursions we all try from time to time.
In any event, I would suggest that you support all surfaces opposite the direction of force to minimize distortion. It would be a shame to get the bearing out, and wind up with deflection in the wheel. -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf Of Robin Wills Sent: Sunday, April 22, 2007 8:08 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
