UBS Hydro II
Faults / fault removal
EN
2018-05-02
49 / 60
8.4
Error list E-Start equipment
Fault
Possible causes
Remedy
E-starter does not work
Battery empty
Charge battery or replace it
Fuse defective
Replace fuse
Defect on cable harness, E-starter
Check cable harness and E-starter
8.5
Error list - traction drive
Fault
Possible causes
Remedy
Machine drives to the left
right on one side
Different tyre pressures
Check tyre pressures and pump up if
necessary
Wheel motors worn
Determine the leakage oil quantity on
the two wheel motors. If they differ too
much, replace the two wheel motors.
Wheel hub became loose
Check the seat of the hydraulic motor
and the wheel hub and replace, if
necessary.
Tighten the castellated nut using an
impact screw driver
Valve levers are not in the end
position
Check the Bowden cables for ease of
motion and re-oil or replace, if
necessary
Check the stroke of the Bowden cables
and re-adjust if necessary
Clamp the wheel fork(s) of the
attachment
Lubricate all wheel forks, so that this
can be turned easily.
Performance of machine
decreases
V-belts of the axial piston pumps
are not sufficiently tensioned (only
applies to RoughCutter)
Check the V-belt tension
Replace the V-belt in case it is burned
or the V-belt tensioner is in its end
position
Pump builds up too less pressure
(Pump becomes louder or
screeches)
Replace pump
Oil temperature too hot
Check the oil quantity in the hydraulic
oil tank and replace if necessary
Bypass valve wrongly connected
Close the bypass valve on the steering
valve
Oil filter dirty
Replace the oil filter in the hydraulic oil
tank
(Pay attention to cleanliness)
Oil leakage
Check hydraulic elements for leaks
