Posted by Wardner on December 15, 2009 at 19:23:50 from (4.154.245.208):
In Reply to: hydraulics help posted by sluggo on December 15, 2009 at 18:41:11:
If your hydraulics are slow, they may be noisy as well. You probably have a flow control valve problem or maybe your filter is "coked" up. That means caved in and covered up with burnt oil. Of course you could have a bad pump as well. I think they are rated for 15 gallons per minute.
I am guessing that you have no fast hitch and only one valve. Many F-400s have two sets of hydraulic outlets underneath the gas tank and another set at the rear.
You can't run two pumps in series. We are not talking about compressed air or electricity here. You could run two pumps in parellel but you would need to protect each pump with hydraulic check valves. It is not something I would do.
I suggest you simplify your life (and tractor) by having two hydraulic systems that are not connected.
Run a new pump off the fanbelt or a new pulley on the crankshaft. The oil and reservoir will be the rear frame and the Hy-Tran within. Get a two spool open center valve to run the loader.
You could also get hydraulic power from the LPTO at the rear of the tractor. Prince makes the pump that slides over the PTO shaft. Again, use the Hy-Tran and rear frame. Supply comes from the cover underneath the clutch housing. The cover has eight bolts. Drill and tap for 1/2" or 3/4" pipe nipple. Or you could use the rear frame 1" drain under neath the PTO shaft.
If you need more pictures, tell me what you need. The picture below is a pump running off its own dedicated crankshaft pulley.
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