Re: HP 85 gummy wheel repair Message #7 Posted by Tony Duell (UK) on 24 May 2003, 5:57 p.m., in response to message #4 by hugh steers
The setscrews raise little burrs on the motor spindle which makes it hard to get the capstan off. What I had to do was remove the setscrews completely (they're not hard to handle on the end of the Allen key), then support the capstan under the capstan roller part (NOT the tachometer disk) with a pices of hard plastic (nylon?) clamped in the vice. I then used a soft metal (brass) drift and hammer to tap the motor spindle out. Oh yes, have some way of catching the motor when it finally does come free.
For reassembly, I smoothed out the burrs on the spindle with 1000 grit wet-n-dry paper.
When you say the capstan diameter is 3/8", I assume this is the diameter of the rubber part, not the metal hub (which is still intact, of course, in my drive).
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