Hydraulic breaker operates too slow
Cause Remedy By
Insufficient hydraulic oil delivery volume. Check the engine speed and/or mode stage of the carrier
and the operation pressure and adjust.
Check the carrier's pressure and the size of the restrictor.
Carrier driver
Valve in pressure and/or tank hoses partly
closed.
Check the valve and open. Carrier driver
Flow resistance on oil filter or oil cooler
too high.
Check the oil filter and oil cooler, clean or replace them. Carrier driver
Working tool jams in the lower breaker
part.
Correct the direction of the carrier boom. The pressing
force must act in the axial direction of the hydraulic
breaker.
Check the shaft of the working tool and deburr if required.
Use the right type, and amount of grease. Always use
chisel paste recommended by your manufacturer.
Check the working tool and the wear bush for wear and
replace if necessary.
See section "Working tool".
Carrier driver
Inside diameter of tank hose too small. Check the inside diameter and change if necessary.
Observe the minimum inside diameter!
See section "Hoses and connections".
Workshop
Return pressure too high. Check and lower the return pressure. Customer Center/Dealer in
your area
Hydraulic oil temperature in the tank
higher than 80°C (176°F).
Check the oil level in the hydraulic tank and top up if
necessary.
Check the oil flow. Too high oil flow leads to a higher
working pressure and temperature, and that the oil flows
over the pressure limiter.
Check the cooler function on the carrier.
See section "Preparation before breaking".
Carrier driver
Hydraulic oil pressure too low. Check the pressure, adjust as required. Fit new pressure
relief cartridges if necessary, on carrier and breaker.
Check the installation, check the restrictor, and check the
carrier's pressure.
See section "Pressure adjustment".
Workshop
Operating temperature too high
Cause Remedy By
Oil level in tank too low. Check the oil level and top up oil. Carrier driver or workshop
Operation in high outside temperature
without oil cooler.
Check oil temperature and install an oil cooler if
necessary.
Workshop or Customer
Center /Dealer in your area
Safety and operating instructions SB 52, 102, 152, 202, 302, 302Tunnel, 452, 452Tunnel,
552
24 © Construction Tools PC AB | 9800 0648 01 | 2018-01-01
Original instructions
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