Mitsubishi 1550 3 point hyd.

[Chilin Ranch]

Hi guys,

My Mitsubishi D1550FD worked great when I got it but suddenly the 3 point stopped working. I took off the box scraper, ran around without it and it started working again.
It has 700 hrs on it so i figured the oil and screen needed changed, screen was blinded over.
Anyway it has been hit and miss as to when it wants to work or not.
The arms will move without a load on it, and it will hold a load if I raise it myself.
I have played with the flow valves under the seat when it was working properly so I know they work.
Oil level is over the oil level plug just a bit.
Running AW46 oil.
Loader attachment works fine.

I have been a heavy equipment operator all my life but this thing has me bamboozled!

Thanks,

Chip

 

[Ehanson]

Pump pressure, failed O-Ring possibly on suction side of pump?

 

[Chilin Ranch]

Pump pressure, failed O-Ring possibly on suction side of pump?

I doubt it, the loader works great. Gonna tear into the lift housing tomorrow.
Probably the control valve inside :-(