Where is your museum?
"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