MCconnell Marc 425 XL

[erj]

Ric, I would:
1. Remove the hose that goes between the Power Beyond and that tee. Plug the PB Control Valve outlet and also that now open tee outlet. I don’t think that it is a good idea to ever leave QDs disconnected.
2. Get a pressure gauge to hook up between the pump and the inlet for the FEL control valve to see what pressure is being generated. I would do this before I installed a new pump.

 

[RealMav]

Will do and thanks for all help, Ric

 

[erj]

Ric,
Don't know your knowledge about hydraulics - so in case you don't know.
Use hardware that is made for the High psi of hydraulics - don't just grab anything from a hardware store.

 

[RealMav]

thanks erj, I have very limited hydraulic knowledge and believe that the only dumb question is the one not asked, That said on my kelley dl 1000 fel and controls, should I be suspecting the four QC on the loader control valve as a possible obstuction and cause for deadhead of system?

 

[erj]

The 4 QCs could possibly be a problem. First let's get done the 2 items I previously mentioned. Once a pressure gauge is on there, we can look further.

 

[RealMav]

Ok I have another question. first off I am woking on taking the power behond off I had to order a plug to go where the power behond conversion plug is . Is it possible that uncoupling the quick connect with engine running that was at the back of the tractor caused the dead head? This would stop flow thru the power behond

 

[Affordable]

There's not a doubt that caused a dead head !!!

Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[RealMav]

I just removed the pump and pushed the seal back in position and put the pump back on.. First time running with new pressure gauge.The engine was overfull and the hydro was way low. I then took a video of operation of fel with gauge . What should the pressure be running at? I have a new pump but will wait to put system pressue relief check valve on before installing new pump hydraulic gage 004 - YouTube

 

[Diamondpilot]

I just removed the pump and pushed the seal back in position and put the pump back on.. First time running with new pressure gauge.The engine was overfull and the hydro was way low. I then took a video of operation of fel with gauge . What should the pressure be running at? I have a new pump but will wait to put system pressue relief check valve on before installing new pump hydraulic gage 004 - YouTube

At the end of the stroke it should have reached 2000 psi minimum. You have a damaged pump.

Replace it.

Chris

 

[erj]

Ric,
As Chris mentioned, you should have at least 2000psi when controls for FEL go into 'relief' mode.
I suggest:
1. Get that plug installed for the Power Beyond.
2. Get that Power Beyond hose removed.
3. Plug that Tee at the other end of the PB hose.
4. Repeat what you did in the video and see if there is any change in pressure.

You now have 2 outlets on the FEL control valve that are feeding fluid into a tee fitting that has only one outlet for going to drain. I don't know for sure, but I suspect that can affect the reading that you saw today on the pressure gauge.

Personally, I would not install the new pump until these things have been done.