Re: Brass bushing problem?

Posted by Paul White on January 13, 2005 at 21:08:37 from (24.126.210.69):

In Reply to: Brass bushing problem? posted by John in CT on January 13, 2005 at 18:46:24:

My 2c worth. To overhaul an aluminum manifold on hydraulic Aircraft actuators when the piston has worn out the cavity. Machine away the worn ID, make a steel sleeve that provides an interference fit, .0015 to .002. The Secret to get them together is to heat the cylinder to 500-600 degree to expand it,~~~ freeze the sleeve (bushing) in dry ice to contract it. When they are shrink fitted together and come back to normal temperature, there is no way to get them apart but machining. In your case, the bushing OD is undersize. That "Add on" tool has been ordered, but hasnt come in yet. You could have the bushings "flash" chrome plated to build them up. Now this should be worth 3c.

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