♦
Check the shaft of the working tool for wear
whenever replacing it, but at least once every
100 operating hours.
♦
Replace the working tool if the shaft has worn to
the minimum diameter D
min
stated below.
D
min
Type
160 mmHB 3100, HB 3100 DP
165 mmHB 3600, HB 3600 DP
180 mmHB 4100, HB 4100 DP
185 mmHB 4700, HB 4700 DP
Checking the retainer bars
♦
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.
The plugs must not be damaged.
Checking the percussion
piston impact surface
♦
Check the percussion piston impact surface
whenever replacing the working tool, but at least
once every 100 operating hours to make sure it is
not chipped and has no visible cracks.
♦
Use an electric torch to illuminate the surface of
the dismantled working tool.
♦
Do not use the hydraulic breaker again if you have
found the surface to be chipped or cracked.
♦
Consult the Atlas Copco Customer Center/Dealer
in your area.
Checking the wear bushes and
impact ring
The wear bushes can be checked after removing the
working tool. You can check the diameter using the
enclosed test gauge.
The diameter measured must not exceed the
maximum permissible diameter D
max
.
D
max
Size information
on test gauge
Type
170 mmØ 165HB 3100,
HB 3100 DP
175 mmØ 170HB 3600,
HB 3600 DP
190 mmØ 185HB 4100,
HB 4100 DP
195 mmØ 190HB 4700,
HB 4700 DP
♦
Check the inside diameter of the lower and upper
wear bush whenever replacing the working tool,
but at least once every 100 operating hours.
♦
Clean the area around the buffer ring to enable a
visual check.
The lower wear bush can be replaced on site.
Consult the Atlas Copco Customer Center/Dealer in
your area.
♦
Remove all remnants of lubricant from the inside
of the lower breaker part before installing new
parts.
45© 2012 Atlas Copco Construction Tools GmbH | No. 3390 5096 01 | 2012-04-26
Original instructions
MAINTENANCEHB 3100, 3100 DP, 3600, 3600 DP, 4100, 4100 DP,
4700, 4700 DP
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