19
NOTE!
Equipment’s parameters should always be monitored. Oil temperature in the
hydraulic circuit should not exceed 80°C. If the temperature exceeds the maximum
allowed, stop the breaker and don’t start it until the oil temperature drops to
normal.
Oil viscosity
Viscosity is an especially important parameter of hydraulic oil. Typically, the temperature of the
hydraulic breaker oil and the equipment is between 40 °C (cold season) and 60 °C (warm season).
At these temperatures, the viscosity of the oil should be 20-40 c
St
. The breaker must not be
started if the oil viscosity exceeds 1000 cSt, or falls down to 15 cSt.
If the oil is too thick:
•
difficult start up
•
breaker strikes slowly
•
unstable breaker performance
•
danger of cavitation in pumps and hydraulic breaker
•
sticky valves
•
if the filter is too dirty, the hydraulics of the equipment may be
damaged
If the oil is too thin:
•
efficiency losses (internal leakages)
•
damage of gaskets, seals or O-rings
•
accelerated parts wear due to lack of
lubrication.
Oil purity
Oil filters as per the filtration specifications, should comply with the excavator or any other
equipment requirements mentioned in the base machine’s manual. When working with the
breaker, we recommend installing oil filters in the inlet lines with filtration no less than 10 mkm.
NOTE!
Oil purity must be no less than recommended by code -/19/16 according to ISO
4406:1999 (neither water nor any other dirt are allowed in the oil) otherwise the
warranty on your breaker will be void.
6.5. Lubrication
CAUTION!
Insufficient or improper greasing may cause abnormal wear of the tool bushing
and tool itself, or tool damage.