Trouble Shooting Guide - DEHACO IBEX Series Operation And Maintenance Manual

8. Trouble shooting guide

8. TROUBLE SHOOTING GUIDE
8.1 Oil leakage
Cause
Oil leakage between the tool and tool bushing.
Oil leaking at the surface of the breaker.
Oil leaks between the cylinder and the backhead.
8.2 No impact energy
Cause
Oil temperature is too low.
Valve does not operate properly.
Pressure in backhead and setting pressure of relief valve is
low.
Poor performance of hydraulic pump.
8.3 Irregular blows after normal start
Cause
Oil temperature increased due to lack of hydraulic oil.
Pressure in back head too high.
Relief valve is set too low.
Not enough down pressure on tool.
The clearance between the tool and tool bushing is too large. Check the clearance between tool and tool bushing.
Wear on top of tool.
Poor performance of hydraulic pump and back pressure is too
high.
Foreign material in side valve.
Seizure of piston and cylinder.
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Required action
Replace damaged seals.
Retighten hydraulic connections.
Tighten specified torque.
Required action
Oil temperature must reach to min. 30ºC.
Check breaker operating button in the cabin of the excavator.
Check pressure of nitrogen gas and relief valve.
Contact excavator manufacturer.
Required action
Replace hydraulic oil.
Check gas pressure.
Check pressure of relief valve.
Apply enough down pressure with arm or boom of excavator.
Disassemble tool to check.
Contact excavator manufacturer.
Disassemble and clean.
Overhaul and check.