I rescued one today, it was going into the skip.
I've been looking around it and it seems in very good order, a 2 horse 3
phase motor that stands testing with my AVO, and nice unworn bearings and
slideways. The oil pump lifts the arm if I spin the flywheel by hand and the
'creep' facility seems fine too. Tomorrow I'm off to purchase a 3 phase
socket and try it out!
However the coolant pump is a bit of a mystery to be. There's a link from
the crank eccentric to the pump piston that is AWOL. I can make one easily,
but wonder if it should maybe be adjustable so as to vary coolant quantity?
I wish I could take a look at a genuine one.
Also, I cant work out how the pump should work. There seems to be a total
absence of valves around the pump unit,(incorporated into the bottom of the
iron casting that is the coolant tank) and at the delivery end there appears
to be one ball bearing that has an inverted cup sitting on it. Does anyone
have any experience with these things and can suggest how it's supposed to
work? There seems very little stuff on the www about donkey saws, this
should be a very useful little (well about 1/2 ton!) tool when it's up and
13 years ago