[R-390] RF sub chassis slug rack problem

[JMILLER1706 at cfl.rr.com]

Assuming it is really a roller bearing and not just a guide, try some 
Liquid Wrench to loosen the bearing.  Heat from the tip of a soldering 
iron or a few gentle taps may also cause the bearing to loosen it up.

----- Original Message -----
From: Jack Absalom <kf4yio at charter.net>
Date: Friday, September 23, 2005 9:27 am
Subject: [R-390] RF sub chassis slug rack problem

> Hi Group
> 
> I'm new to the group and am restoring a 1963 Teledyne R390A.  I 
> have a 
> problem.   I'm cleaning all the slug racks and roller bearings and 
> one 
> of the rack's bearings are frozen tight.   They have appaerently 
> been 
> this way for quite a while as grooves have been worn on each side 
> of the 
> bearing where it slides up and down the mount.   The outer 
> bearings on 
> this particular rack that roll on the cams are ok and cleaned up 
> well.   
> I just can't get these inner bearings to unfreeze.  That's right, 
> both 
> sides are like this.   All the rest of the slug racks have been 
> cleaned, 
> reassembled lubed and replaced.  This rack has been cleaned lubed 
> and 
> replaced but I would like to either replace or fix it.
> 
> Any ideas ? 
> 
> Thanks guys...... I used the R390A 's in the Navy and and NSA 
> during the 
> cold war and Vietnam.  What a machine/rig!!!!!
> 
> 73 - Jack  KF4YIO
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