You seem to be very knowledgable with Hyduraulics. I have a Komatsu PC150-5 Excavator I can't figure out. Boom down and bucket in and out are slow / weak and sounds like the fluid is bypassing somewhere. Everything else works properly, full power to both tracks and all other functions. If I slightly engage any other function, Stick, Swivel, tracks or aux pedal then boom down and bucket immediately work perfectly, boom easily lifts machine and bucket in and out is fast, no bypass sound, it all just works properly. Noticed code 25 on the display for oil pressure sensor, disconnected, no change but then shows code 23. Have an oil pressure switch on order but doesn't look like that controls anything that would cause this issue? On the advice of another, we replaced the main relief valve, adjusted in and out, but this made no change. Any advice? Thank you.
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Hello my brother, the videos you post are very good and keep it up I wanted to ask a question komatu pc220-7 the whole system does not work, the main pump pressure reaches 900 psi, when the system stops, it does not increase or decrease. How much should the main pump pressure be? Thank you for your cooperation
Hello brother If something bothers you, main pump p1= 900psi P2= 200psi came to me, the handbrake works, when the system is ordered, oil comes up to the control valve spool cap, but the machine could not move at all. What could be the problem? Please tell me the problem
