Recent content by River Fluid Power

Swap the entire control valves on the tandem pump. That’s the last thing you can try before pulling the whole pump out and looking inside. 1000 hours is not a lot on a rebuilt/replaced pump.

I think that is either a Poclain or Rexroth. I can’t get those at this time. Can you verify the brand?

You could have a bad seal area on the shaft or a bad seal. Or both. The seal carriers bolted to the front of these motors crack sometimes as well. I can get you a complete motor for $1978.00. You’re looking at 1-2 weeks.

You’re welcome.

The displacement of the 26016 pump is .72cid. You can multiply the displacement by the rpm you will run at and divide the result by 231 to get flow under no load conditions. cid x rpm ÷ 231 = gpm For example: (.72 x 3000) ÷ 231 = 9.35 gpm (.72 x 3700) ÷ 231 = 11.53 gpm

@AJ-17 That seems steep! Do you have the model number for the motor? I can possibly get you a motor cheaper, and parts are possible as well.

The seal is most likely leaking due to internal wear and/or damage in the motor. A leaking seal by itself is not always a sign of a weak motor, but the leak and loss of power together point to the motor needing servicing.

Possibly. If you lose hydraulics suddenly, it is usually the gear pump or the main relief valve in the hydraulic control valve.

It is possible that the gear pump failed. You can check it with a flow meter that has a pressure gauge and needle valve.

You have a good day as well. Good luck! -Charlie

Do you have more details?

Also Michigan. Welcome.

My guess would be that you lost the hydraulic pump on the back of the main drive pump. Should be two bolts and two hoses to pull it off and check it.

You’re very welcome, Wateka! Happy to help!

You’re welcome. If you discover the valve doesn’t seem to function smoothly, loosen the tie rod nuts and reduce torque in 2 foot pound increments until they work correctly. Too tight and the spools won’t want to shift. Too loose and the valve will leak.