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Operator's instructions
1. General
Hydraulic pumps
Hydraulic pump 1
Main hydraulic system pump 1 is a variable-displacement piston type and provides
hydraulic power to the following functions.
• All movements
• Percussion
Hydraulic pump 2
Hydraulic pump 2 is a variable-displacement, closed-circuit hydrostatic type and
provides oil to translation.
Hydraulic pump 3
Hydraulic pump 3 is a gear type mounted on the engine distribution and provides oil
to the extractor and cooling fan.
Table: Hydraulic pump output (2500 rpm)
Pump no. CC Flow (litres/min.) Pressure (bar, max )
1 60 139 310
2 42 97 420
3 23 49 190
Air system
The air system consists of the compressor with oil separator, hoses and valves. The
compressor is belt-driven from the diesel engine.
The compressor element is lubricated by an air-oil mixture. The mixture is separated
in the oil separator. The system supplies air for flushing in the bore hole, cleaning of
the dust collector filter and the rock drill lubrication system and ECL.
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