7 - Fault finding99Hydraulic System, Z-boom versionIntelliTrackFAULT PROBABLE CAUSE CONTROL/REMEDYNo boom movements when activated. Insufficient hydraulic pressure. Check oil pressure.Check tractor hydraulic oil level.Insufficient oil supply. Oil flow must be min. l/min. and max. 130 l/min.Check tractor hydraulic oil level.Blown fuse(s). Check / replace fuse in junction box.Bad / corroded electrical connections. Check / clean connections, multi plugs etc.Insufficient power supply. Voltage on activated solenoid valve must be morethan 8 volts.Use wires of at least 4 mm for power supply.Defective relay / diodes in junction box. Check relays, diodes and soldering at PCB in junctionbox. LED diodes indicate boom functions.Clogged restrictors in bypass block. Remove and clean restrictors in bypass block (Seehydraulic diagram). Change hydraulic oil + filter.Wrong polarity. Check polarity. Red positive (+), black negative (-).ParaLift lock does not lock.Boom lift raises to max. position, when tractorhydraulics are engaged.Back pressure in return line exceeds 15 bar. Connect the return line with a free flow to hydraulic oilreservoir.Divide return line in two and lead return oil back toreservoir via two spool valves.Oil heats up in Closed Centre systems. Bypass valve does not close properly. Check / close (screw in) by-pass valve.Internal leaks in flow regulator. Replace flow regulator O-rings and backup rings.Replace flow regulator.Individual hydraulic piston does not move. Clogged restrictor. Dismantle and clean restrictor.FAULT PROBABLE CAUSE CONTROL/REMEDYIntelliTrack steers slowly or erratically. Air in system. Vent the Intellitrack cylinders - see “Venting the SteeringHydraulics”Front potentiometer bar/springs moveerratically.Re-arrange the spring setup, so that the potentiometer barmoves freely.IntelliTrack has non-linear steering or is notfollowing the tractor’s track.Front potentiometer springs are not parallel. Refit springs to parallel position and check potentiometerreading - see “IntelliTrack Front Potentiometer Calibration”.
