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Dehaco B.V. • Kruisbaak 25 • 2165 AJ Lisserbroek (NL) •
✆
+31 (0)252 - 41 79 50 •
[email protected] • www.dehaco.nl
8. Trouble shooting guide
8. TROUBLE SHOOTING GUIDE
8.1 Oil leakage
8.2 No impact energy
8.3 Irregular blows after normal start
Cause
Required action
Oil leakage between the tool and tool bushing.
Replace damaged seals.
Oil leaking at the surface of the breaker.
Retighten hydraulic connections.
Oil leaks between the cylinder and the backhead.
Tighten specified torque.
Cause
Required action
Oil temperature is too low.
Oil temperature must reach to min. 30ºC.
Valve does not operate properly.
Check breaker operating button in the cabin of the excavator.
Pressure in backhead and setting pressure of relief valve is
low.
Check pressure of nitrogen gas and relief valve.
Poor performance of hydraulic pump.
Contact excavator manufacturer.
Cause
Required action
Oil temperature increased due to lack of hydraulic oil.
Replace hydraulic oil.
Pressure in back head too high.
Check gas pressure.
Relief valve is set too low.
Check pressure of relief valve.
Not enough down pressure on tool.
Apply enough down pressure with arm or boom of excavator.
The clearance between the tool and tool bushing is too large. Check the clearance between tool and tool bushing.
Wear on top of tool.
Disassemble tool to check.
Poor performance of hydraulic pump and back pressure is too
high.
Contact excavator manufacturer.
Foreign material in side valve.
Disassemble and clean.
Seizure of piston and cylinder.
Overhaul and check.
Summary of Contents for IBEX 1200GS
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