"Gunner" wrote in message
...
On Thu, 2 Feb 2006 09:13:33 +1100, "Tom Miller"
wrote:

I thought I'd give you a final update on the
Cincinnati Mill story. Further investigation has
discovered a collapsed bearing and damaged
gears.
It was decided that, after a short ,but moving
ceremony it would be delivered in the final care
of a scrap merchant. R.I.P

Tom Miller


What you really want anyways, is a nice Kearny &
Trecker/Milwaukee #2
miller. They are nearly bullet proof. If you
find one however..remove
the ventilation cover high on the right side
(facing the table) and
with the motor running look inside with a
flashlight and make sure the
lube pump is spritzing all the gears and such.
The resevor is on the
back side of the miller with a giant sized Flip
Top to fill it with
and a sight glass. About the only thing that
seems to go wrong with
them is the oil pump breaking (gear pump) and
even then...you can put
a powered oil pump on the machine somewhere and
keep her going and
going and going and going.....

Gunner



"Tom Miller" wrote in
message ...
I volunteer at the local science
museum,rebuilding old machinery. Mostly steam
and early diesel tractors and road rollers. We
have a pretty good shop with a selection
older,
but good solid machine tools. Among them is a
Cincinnati horizontal mill No.2 M1 ( serial
F5409-6) made in 1946. Another of the
volunteers(No , it really Wasn't me) pulled
the
gearbox selector assembly off the side of it
as
the machine appeared to be seized. It appears
that it somehow selected two different gear
ratios at once. It appears also, that the gear
selection is done hydraulically by pistons
which
push selector arms in response to the position
of a multi-port valve .The question is -how do
you get the selector arms in the correct
position to re-assemble it. We will probably
have to replace the "o" rings on the pistons
as
that is possibly why it selected two gears at
once.
Does anyone have any experience with this or a
similar machine? Am I looking in the correct
areas and are my suppositions reasonable?

We spent 2 hours today (and a fair amount of
bad
language) trying to get those selectors in the
right positions to re-assemble it.


Tom Miller


Fist we've got to find the money, then the
machine..

BTW The trick of replacing the oil pump with an
external electrically driven one, is a good one.
I've done it one Stahl refrigeration screw
compressors with good results. Early Stahl units
required that the oil pump bearings be changed
every 2000 hours. (and baby, you'd better do it!)
The rest of the thing was immune to everything but
lightning strike. Replaced the internal pump with
a blank plate,and an external Roper gear pump.
Basically you blessed it once a year and that was
it for maintenance!

Tom