I'm going to be using my 33ASR at what now seems to be an annual
classic hardware exhibition for Computer Science at York, so a spot of
preventive maintenance seems to be in order.
I have Vol.1 and Vol.2 of "Bulletin 310B", Technical Manual. Vol.1 is
installation, disassembly/reassembly, lubrication, theory of operation;
Vol.2 is adjustment information (Is there a parts manual anywhere? I'd
like a copy of that...)
The parts manual exists, I have it. I only have one copy, though
(unlike the Techincal Manual where I have at least 2 of each volume, but
different editions IIRC).
I might be able to be convinced to make a copy of it. It is, at least,
looseleaf...
It says to lubricate the motor bearings at each end. But mine doesn't
look like it was designed for that. It's a standard (for the UK)
Teletype motor part no. 182267 (115V 50Hz). Are these meant to be
"sealed for life" or is there some way to oil them that I've not
spotted?
If this is the normal motor, then it's sort of sealed for life -- the end
housings are glued to the stator laminations, It's similar in
construction to the RX02 spindle motor IIRC.
It can be lubricated, though. Take the motor out of the chassis, remove
the fan and the reduction gearing. There's a black plastic cover at each
end around the spidnle, these can be prised (pried) off. You can the
squirt some oil into the bearings.
-tony