[Milsurplus] DM-28-Q Part Needed

[Mark K3MSB]

>>But if there wasn't one under the bearing retaining plate when you removed
the plate, check the armature end float before you assume someone else left
it out.

This occurred to me on the drive into the office this morning;  just because
it's not there doesn't mean it's missing.

I'm not sure what the "end float" is -- this is my first dynamotor I've
taken apart.  I assume you mean the play in the axial direction?

The dynamotor worked just fine before I took it apart,  but it needed a good
cleaning on the inside.  I cleaned the old grease out of the bearings,  and
the ends rotate freely.  I replaced both of the caps underneath.

By the way,  using a caliper at work today:

OD:    3/4     ID:  9/16      Thickness:  10 thousandths.

The ID I reported earlier was incorrect -- guess I can't read a ruler no
more......;-0

Mark K3MSB

On Tue, Sep 7, 2010 at 9:59 AM, J. Forster <jfor at quik.com> wrote:

> When I was doing mechanical stuff, there was a company called PIC
> (Precision Instrument Components) that sold all sorts of wonderful gears,
> shafts, hangers, etc. The also sold inner and outter race shims in a
> variety of standard bearing sizes.
>
> Another similar companiy were Sterling Gear. You might also try Small
> Parts, or even someone like McMaster-Carr or Reid.
>
> The main issue is going to be trhe minimum order.
>
> FWIW,
>
> -John
>
> ===============
>
>
>
>
>
> > Mark,
> >
> > I'm sure later replacements and production were steel or stainless steel.
> > But as of July 1943 it was paper.  The Description was
> >
> > WASHER: Paper: Several
> >
> > The revision of 18 December 1943 removed a lot of mostly mechanical
> > hardware type parts from the parts list, which shrank by about one half.
> >
> > The really wierd thing about the JNQ manual series is that although it
> had
> > been listed in the title as early as 25 February 1942, a schematic,
> wiring
> > diagram and photographs of the BC-348-Q didn't appear in the manual until
> > the
> > revision of 30 July 1945
> >
> > By the way, it just occurred to me to ask what happened to the original
> > shim?  If it got lost of damaged, OK.  But if there wasn't one under the
> > bearing retaining plate when you removed the plate, check the armature
> end
> > float
> > before you assume someone else left it out.
> >
> > In a message dated 9/6/2010 11:18:59 PM Central Daylight Time,
> > mark.k3msb at gmail.com writes:
> >> Robert --
> >>
> >> It's definitely not paper;  stainless steel probably.
> >>
> >> "Bearing shim" / "Outer race shim" -- OK,  now I have a name or two for
> >> the critter.
> >>
> >> I'm using AN 08-10-112  17 July 1943 revised 21 June 1948,  and it shows
> >> the part,  but it's not in the parts list.
> >>
> >> Mark K3MSB
> >>
> >
> > Robert & Susan Downs - Houston
> > wa5cab dot com (Web Store)
> > MVPA 9480
> > ______________________________________________________________
> > Milsurplus mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Milsurplus at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> >
>
>
>