Atlas Copco Hydraulic Breaker HB4700 DP

Check both retainer bars whenever replacing working tools

Rework or replace the retainer bars if you find any signs of wear, such as sharp edges, notches or severe erosion

Deburr the retainer bars by careful grinding

Install the retainer bars in their reversed orientation if they cannot be reworked anymore

Replace the retainer bars if both sides cannot be reworked anymore

Check both plugs for the retainer bars

Sign off on the retainer bar check

Warning: This procedure should be performed by trained personnel only.

Is the hydraulic breaker at operating temperature (60-70 °C)?

Lay down the hydraulic breaker.

Do not apply pressure to the working tool.

Remove the threaded plug from the filling valve 'G'.

Enter the pressure reading from the test pressure gauge.

Is the measured value below the required gas pressure?

If yes, add nitrogen into the piston accumulator.

Release the pressure from the piston accumulator.

Visual check of all lines from the pump to the hydraulic attachment

Visual check of all lines from the hydraulic attachment to the tank

Tighten any loose screw connections

Sign off on the hydraulic lines check

Warning: This check requires trained personnel with PPE!

Enter the machine's hour meter reading

Upload a photo of the dismantled working tool

Is the percussion piston impact surface chipped?

Are there any visible cracks on the percussion piston impact surface?

If the surface is chipped or cracked, do not use the hydraulic breaker again and consult the Atlas Copco Customer Center/ Dealer in your area.

Sign off on the percussion piston impact surface check

Visual check of the tensioning bolts through the service openings placed at the top of the breaker box's rear side

Check the screw connections and tighten as required

Check the pins in the retainer bars

Check that the plugs of the retainer bars are in place and are not damaged

Check the connecting fittings of the ContiLube® II system for leaks;