2200293
_5982
2016 05 02
English
EN
Quick coupler troubleshooting
Wrong
Reason
Measure
Quick coupler cannot be close
Incorrectly performed tool attachment
Check tool connection according
to the Control section
Hydraulic pressure in the lock circuit
is too low to close the quick coupler.
Check the pressure in the lock
circuit. If it is too low, check lock
valve function. If the lock valve is
serviceable, the fault lies with the
machine.
The protective cover does not
open and presses against the male
connectors. The rod that opens
the cover is missing.
Install a new rod.
One or more male connectors have
become skewed and no longer fit
the female connectors.
Contact your dealer.
The quick coupler cannot be opened.
Hydraulic pressure in the lock circuit
is too low to close the quick coupler.
Check the pressure in the lock
circuit. If it is too low, check lock
valve function. If the lock valve is
serviceable, the fault lies with the
machine.
One of the two pilot-valve controlled
check valves in the H cylinder is
defective and will not open.
Contact your dealer
Pressure relief valve defective
Oil leak from the quick connect fittings
when the tool is connected
The nose seal is missing or damaged.
Replace the nose seal as described in
the section Replacing the nose seal,
quick connect fitting
The quick connect fittings are dirty
or damaged.
Clean or install new quick connect
fittings as described in the section
H cylinder quick connect fittings
maintenance.
Oil leak from quick connect fitting
The quick connect fitting is dirty
or damaged
Clean or install new quick connect
fittings as described in the section
H cylinder quick connect fittings
maintenance.
The tool hydraulics to not function.
Incorrectly performed tool attachment. Check according to the section
Connecting and disconnecting tools.
The machine does not provide the
tool with the pressure and/or flow
it needs
Check the machine handbook or
contact the machine supplier.
Fault in the tool's hydraulic and/or
electrical systems.
Checked the tool's manual or contact
the tool supplier.
The tool's hydraulics and/or electrical
system does not function.
Defective electrical connection
between the toll and a quick coupler.
Check the harness and electrical
connections. Replace or repair
defective parts. Refer to the handbook
regarding electrical connections.
