Husqvarna DXR300 Operator's Manual page 52

Joystick in an operative
position when starting the
remote control.
An individual function is
not working.
Fault in the pilot control
valve or the spool in the
valve i stuck or damaged.
The machine sinks on Leaking check valves in
the outriggers. outrigger cylinders.
The hydraulic fluid has
been heated up in a cold
machine.
A slide valve is seizing due
to contamination.
Jerky arm movements.
Air in the pilot control valve. Contact your service agent.
Broken O-rings in the pilot
control valves.
Fault in the pilot pressure
circuit.
Contamination in the
hydraulic system.
Leakage in the cylinder.
Cylinder sinks*.
Defective valve.
Faulty counter balance
valve.
Cooler blocked or
obstructed.
Too high ambient
temperature.
Maximum pressure or
standby pressure set too
high in the pump.
Overheating in the
hydraulic system. Defective hose or coupling. Replace faulty component.
Restriction in main pipe or
pipe to tool.
Power extraction too high
due to faulty or unsuitable
tool.
Defective hydraulic pump.
Not enough hydraulic fluid
in the tank.
Knocking noise in the
hydraulic system. Air in the hydraulic fluid.
Defective hydraulic pump.
Cloudy grey fluid indicates
water in the system.
Discoloured hydraulic
Black fluid indicates carbon
fluid.
formation due to too high
operating temperature.
* If cylinder 3 and 4 slowly sink (approx. 1 cm/min) this is entirely normal as they do not have any counter balance valves.
52 –
English
TROUBLESHOOTING
Restart the remote control with the joystick in neutral position.
Contact your service agent.
Contact your service agent.
Warm up the machine.
Contact your service agent.
Contact your service agent.
Contact your service agent.
Investigate any leaks there might be. Change hydraulic fluid and oil filter.
Locate the leak and replace any components that might be damaged.
Contact your service agent.
Contact your service agent.
Clean the cooler
Use forced cooling.
Contact your service agent.
Replace faulty component.
Check that the tool's pressure and flow are compatible with the machine's
specification.
Contact your service agent.
Stop the motor at once. Investigate and rectify any leaks there might be.
Replenish hydraulic fluid.
Run the machine without a load until air and fluid have separated.
Contact your service agent.
Investigate and rectify the cause of water entering. Change hydraulic fluid
and oil filter.
Investigate and rectify the cause of overheating. Change hydraulic fluid
and oil filter.