Filter
Top Products
15
TROUBLESHOOTING
If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem.
When diagnosing faults in operation of the grinder, always check that the hydraulic power source is supplying the correct
hydraulic ow and pressure to the grinder as listed in the table. Use a owmeter known to be accurate. Check the ow
with the hydraulic oil temperature at least 80°F/27°C.
PROBLEM CAUSE SOLUTION
Tool does not operate.
Hydraulic hoses not connected
properly.
Make sure hoses are connected and the
couplers are tight.
Hydraulic control valve OFF.
Turn the hydraulic system control valve
ON.
Hydraulic system not functioning.
Check hydraulic power unit for correct
ow and pressure.
Couplers or hoses blocked. Remove obstruction.
Pressure port check valve is installed in
tool return port.
Install pressure port check valve in
pressure port.
Tool operates in reverse.
(piston advances/retracts when trigger
is squeezed.)
Hoses connected to wrong ports on
tool.
Connect input (supply) line to IN port.
Connect output (return) line to OUT
port.
Tool under-crimps. Die load less than
10 tons/9072 kg.
Hydraulic system pressure too low.
Check hydraulic power source for
correct ow and pressure.
Relief valve set too low. Increase relief valve pressure.
Dirt or obstruction between dies. Remove obstruction. Clean die area.
Piston seal worn or damaged.
Contact an authorized Stanley
distributor.
Improper die set for wire and
connector.
Install proper die set.
Tool over-crimps. Die load more than 12
tons/10,886 kg.
Hydraulic system pressure too high.
Check hydraulic power source for
correct ow and pressure.
Relief valve set too high. Decrease relief valve pressure.
Trigger difcult to operate.
Hoses connected to wrong ports on
tool.
Connect input (supply) line to IN port.
Connect output (return) line to OUT
port.
Excessive back-pressure.
If back-pressure is greater than 250
psi/17 bar, clear the return line
obstruction or restriction.
Trigger guard bent and binding on spool
in bore.
Repair or replace trigger assembly.