Husqvarna DXR140 Operator's Manual page 54

An individual function
is running slowly.
An individual function
is not working.
The machine sinks on
the outriggers.
Jerky arm
movements.
Cylinder sinks*.
Overheating in the
hydraulic system.
Knocking noise in the
hydraulic system.
Discoloured hydraulic
fluid.
* If cylinder 3 and 4 slowly sink (approx. 1 cm/min) this is entirely normal as they do not have any counter balance valves.
54 – English
TROUBLESHOOTING
Internal leakage in the
cylinder.
Restriction in a hydraulic
hose.
Fault in the pilot control valve. Contact your service agent.
Joystick in an operative
position when starting the
remote control.
Fault in the pilot control valve
or the spool in the valve i
stuck or damaged.
Leaking check valves in
outrigger cylinders.
The hydraulic fluid has been
heated up in a cold machine.
A slide valve is seizing due to
contamination.
Air in the pilot control valve.
Broken O-rings in the pilot
control valves.
Fault in the pilot pressure
circuit.
Contamination in the
hydraulic system.
Leakage in the cylinder.
Defective valve.
Faulty counter balance valve. Contact your service agent.
Cooler blocked or obstructed. Clean the cooler
Too high ambient
temperature.
Maximum pressure or
standby pressure set too high
in the pump.
Defective hose or coupling.
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.
Air in the hydraulic fluid.
Defective hydraulic pump.
Cloudy grey fluid indicates
water in the system.
Black fluid indicates carbon
formation due to too high
operating temperature.
Extend an unloaded cylinder to its end position and check the
pump pressure in the display. If you get maximum pressure the
pump regulator is OK.
Run an unloaded cylinder. Check the pump pressure on the
display. If you receive max. pressure but not full speed on the
cylinder, this indicates a strangulation in the hydraulic hose.
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.
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.
Use forced cooling.
Contact your service agent.
Replace faulty component.
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.