4200xl Hydraulics slow?

[Stuart]

hmm, not sure then, if turning the pump speed up makes no difference then the oil is not getting to the rams for some reason, doesn't the 4200 have a 4th valve which acts as a bypass?
maybe someone will chime in who owns one.

[schmoking]

dont mess with pump speed... or u will get too much pressure.
the 4th valve is a bypass valve yes... it should be mixed so it closes when other valves open.
did u check servo travel, maybe they dont open all the way?

[chris deacon]

Yeah i put the pump speed straight back matey. I had a play with the travel too and it does not seem to help? Its been like it since i received it at the beginning of the week.