2390 hydraulic problem

[rohde2390]

I have a 2390 that I am having trouble diagnosing hydraulic trouble. Checked it at remotes with a hydraulic flow rater. Both are making 2100 psi but only about 8 gpm of flow. Knows are turned all the way up for both remotes. Tried a different used compensator and lost all hydraulic function. Had the remote valves off and checked orings were good. Don't know where to go from here. Thanks.

 

[used red MN]

Hello rohde, welcome to YT! The guy we used have on here that was sharp on these end of era Cases quit posting here and moved to a Case Facebook group. I think he still posts under the same name 1370 Rod. Are you sure your pump is just not worn out? Did you get any hydraulics back?

 

[mEl]

I have a 2390 that I am having trouble diagnosing hydraulic trouble. Checked it at remotes with a hydraulic flow rater. Both are making 2100 psi but only about 8 gpm of flow. Knows are turned all the way up for both remotes. Tried a different used compensator and lost all hydraulic function. Had the remote valves off and checked orings were good. Don't know where to go from here. Thanks.

That unit has a piston type Pressure / Flow compensating type pump. We removed one from a 2294, which has the same system suspecting an internal problem and found it in like new condition. On that particular one a compensator cured the problem. The proper thing to have done would to have done a powershift diagnosis, power shift clutch leakage can be checked as clutch pack leakage shows up as a loss of hydraulic GPM as the flow divider is required to satisfy the Power shift and PTO before sending oil to the hydraulic system downstream. Each power shift range can be selected and the flow from the pump observed and by comparing flows in different ranges the leaky clutch packs can be isolated or if all is well in all ranges the Power Shift can be eliminated as the problem source. Most hydraulic flow problems revolve around the check ball cartridge o rings in the remote valve sections or Power Shift leakage. If you could get hooked back up to a flowmeter I could walk you through the process. Understanding how you set up for the testing is the key and relatively simple. One additional thing, at what rpm did you test the flow rate of the pump?

 

[Bill in Colo]

If you can find Rod he can help you. He walked me through the same problem, same model it was the outside pump, Rod found a rebuilder for me.

 

[rohde2390]

We did the flow rate through the whole rpm range

 

[mEl]

Setting up properly and shifting the power shift while watching the flowmeter for differences in flow diagnoses the condition of the powershift leakage. If you did not do this then you have no idea how much oil is getting away or where if the problem is in the unit.