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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 flow and pressure to the grinder as listed in the table. Use a flowmeter known to be accurate. Check the flow
with the hydraulic oil temperature at least 80°F/27°C.
PROBLEM
Tool does not operate.
Tool operates in reverse.
(piston advances/retracts when trigger
is squeezed.)
Tool under-crimps. Die load less than
10 tons/9072 kg.
Tool over-crimps. Die load more than 12
tons/10,886 kg.
Trigger difficult to operate.
TROUBLESHOOTING
CAUSE
Hydraulic hoses not connected
properly.
Hydraulic control valve OFF.
Hydraulic system not functioning.
Couplers or hoses blocked.
Pressure port check valve is installed in
tool return port.
Hoses connected to wrong ports on
tool.
Hydraulic system pressure too low.
Relief valve set too low.
Dirt or obstruction between dies.
Piston seal worn or damaged.
Improper die set for wire and
connector.
Hydraulic system pressure too high.
Relief valve set too high.
Hoses connected to wrong ports on
tool.
Excessive back-pressure.
Trigger guard bent and binding on spool
in bore.
SOLUTION
Make sure hoses are connected and the
couplers are tight.
Turn the hydraulic system control valve
ON.
Check hydraulic power unit for correct
flow and pressure.
Remove obstruction.
Install pressure port check valve in
pressure port.
Connect input (supply) line to IN port.
Connect output (return) line to OUT
port.
Check hydraulic power source for
correct flow and pressure.
Increase relief valve pressure.
Remove obstruction. Clean die area.
Contact an authorized Stanley
distributor.
Install proper die set.
Check hydraulic power source for
correct flow and pressure.
Decrease relief valve pressure.
Connect input (supply) line to IN port.
Connect output (return) line to OUT
port.
If back-pressure is greater than 250
psi/17 bar, clear the return line
obstruction or restriction.
Repair or replace trigger assembly.
CT10 USER MANUAL 15
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