Husqvarna DXR-310 Operator's Manual page 49

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
fl uid
* If cylinder 3 and 4 slowly sink (approx. 1 cm/min) this is entirely normal as they do not have any counter balance
valves.
TROUBLE SHOOTING
Restriction in a hydraulic
hose.
Fault in the pilot control valve. Contact your service agent.
Joystick in an operative posi-
tion when starting the remote
control.
Fault in the pilot control valve. Contact your service agent.
Leaking direction control valves
for outrigger cylinders or inter-
nal leakage in the cylinders.
The hydraulic fl uid 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 servo circuit.
Contamination in the hydraulic
system
Leakage in the cylinder.
Defective valve
Cooler blocked or obstructed.
Too high ambient temperature. Use forced cooling.
Maximum pressure or pressure
at rest 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 fl uid in
the tank.
Air in the hydraulic fl uid.
Defective hydraulic pump.
Cloudy grey fl uid indicates
water in the system.
Black fl uid indicates coke
formation due to too high
operating temperature.
Extend an unloaded cylinder to its end position and
check the pump pressure in the display (under "Serv-
ice"). If you do not get maximum pressure this indicates a
restriction in the hose. Change hose.
Restart the remote control with the joystick in neutral
position.
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
fl uid and oil fi lter.
Locate the leak and replace any components that might
be damaged.
Contact your service agent.
Clean the cooler.
Contact your service agent.
Replace faulty component.
Replace faulty component.
Check that the tool's pressure and fl ow are compatible
with the machine's specifi cation.
Contact your service agent.
Stop the motor at once. Investigate and rectify any leaks
there might be. Replenish hydraulic fl uid.
Run the machine without a load until air and fl uid have
separated.
Contact your service agent.
Investigate and rectify the cause of water entering.
Change hydraulic fl uid and oil fi lter.
Investigate and rectify the cause of overheating. Change
hydraulic fl uid and oil fi lter.
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