PROBLEM:
THE TOOL SHAFT DOES NOT TURN
CAUSE
SOLUTION
Power pack flow lever left in OFF
Put flow lever in ON delivering flow to tool
Problems of flow circulation
Control hoses, quick
installation sequence,
The trigger or the ON OFF
broken or blocked
Control and repair
Broken hydraulic motor or broken drive
shaft
Control / repair or contact the nearest
DOA service agent
PROBLEM
THE BIT TURNS BUT THERE ARE POOR PERFORMANCES –
TOOL HAS NO POWER
CAUSE
SOLUTION
The flow control valves integrated in the
tool are dirty, damaged or blocked
Control, clean or change
The power pack does not give sufficient
pressure
The power pack has low setting of the
relief valve
Control the power pack pressure delivery
Increase setting of relief valve of power
pack
Tool broken
Control and contact the nearest DOA
service agent
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