Uni V-4 info

What's a setup like this worth, anyway? Dad always said it did the best combining job of any machine he ever had.

I might take the bottom cover off the pan just to check the pickup, even though I didn't see much sludge in the timing gear area. I know the gauge was bad because it was stuck on 45 psi for 14 years. I put a new one on it, and should have it running tomorrow. Took a while to make a new gasket for the cover...what a monster!

Pretty ingenious oil pump though.

The oil pump is made like an old automatic transmission pump and it is mounted on the crankshaft. It actually slides on the crankshaft and is clamped in place on the crankshaft with a ring that has 3 setscrews in it. (Its supposed to have about .010 clearance between it and the crankcase.) That ring is very hard and brittle and can break easily. It is under the long cover on the equipment pto side of the engine, so to get at it you have to get the flat pulley off, and remove the cover. (Those flat pulleys can break easily too.) The pump gets its oil through a tube from the pickup that seals to the pump with a metal sleeve that has a rubber seal in it. Those metal sleeves are held in place with a springs.

If its not pumping and the problem is not the pickup, or an obvious problem with the pump itself, chances are its sucking air where the intake seals to the tube. My thinking is if the seal leaks on the pressure side a little, it probably won't miss the oil much, but if it leaks on the intake it can draw air into the pump instead of oil.

They're kinda neat motors, tough to haul though.
God Bless!
Kelvin