I am a mechanic but I have very little knowledge of hydraulics. The following hydraulic responses are way too slow: bucket movement and the right hand side track movement. The slew/swing motor has no power. I am wondering if these functions are all fed from the same pump and it could just be a pump adjustment?? I know the pump was recently replaced with a cat dealer reman. unit. Please help ASAP.
I would say the first thing to check is the inline spin on filter (as sometimes they get restrictive) if OK, then start looking at the pressure regulator valve assembly! The right hand side track movement issue is another problem, (could be as easy as a linkage adjustment)!
The hydraulic pump provides the pressurised oil to the control valves, which have solenoids on them that allow oil flow through them when power is applied, which depending on application makes a hyd cylinder or hyd drive motor operate. The handles on either side of the operaters chair have micro switches inside them that power the solenoids on the valves. The valve body assemblys, or sandwich valves they are called, are able to be pressure ajusted independently to make more or less movement to whatever it operates. On the bottom of the valve theres a cover for the valve spool, the allen wrench fitting in the base is the pressure ajuster. BUT DO NOT ATTEMPT TO AJUST PRESSURE ON ANY PART OF THE HYDRAULIC SYSTEM WITHOUT A TRIPLE PRESSURE REG GAUGE. PRESSURES IN SYSTEM EXCEED 3000 PSI AND IF INCORRECTLY AJUSTED COULD CAUSE A PRESSURE COMPONENT TO FAIL AND HURT OR KILL YOUR SELF OR SOMEONE ELSE
Check the lines for blockages as well as the filter. Sometimes its the spool valves or valve body that's at fault.
