Hi all, an update on the sourcing questions below:
> On Nov 11, 2017, at 5:53 PM, Fritz Mueller <[email protected]> wrote:
>
> I noticed that a few of the thin steel ribbon springs in the paper path are
> missing or broken on my unit, and some of the rubber bushings have hardened
> and deteriorated. Long shot ask, but wondering if anybody out there has
> spares of:
>
> 74-08648 (Spring, paper drag)
> 12-10357-3 (Bushing, rubber mount)
> 12-10358-3 (Ring, rubber mount)
>
> Also, the maintenance manual recommends Molykote B2KR for lubrication in a
> few places, but I can't seem to find specs on what this was. Can anybody
> recommend an equivalent modern alternative grease?
For the paper drag springs, I ended up just fashioning some replacements from
some .002 steel shim stock (easy enough; just some 1/2” x 3” strips with holes.)
For the bushing and rings, these have the right dimensions and look very close
to the original parts:
http://www.vibrationmounts.com/RFQ/VM07003.htm
I’ll probably order some of these up to replace the decaying mounts for the
carriage assembly. I ended up just using some inexpensive 3/8” chassis grommets
for the more straightforward end stop bumpers.
For the grease, which is called out for the carriage loading cams and a couple
of linkage pins/pivots, I opted for Molykote BR2 Plus, though I suppose any
decent lithium grease would work okay here?
Overall, I have been pretty amazed by the sheer number of machined parts,
castings, high quality bearings, etc. within this beast. Lots of stainless
steel throughout. Sure wouldn’t find anything built this way these days! What
a tank.
cheers,
--FritzM.
