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
(measuring
point see below).
Type Size information
on test gauge
D
max
HB 2000,
HB 2000 DP
Ø 145 150 mm
HB 2500,
HB 2500 DP
Ø 155 160 mm
◆
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 impact 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.
A. impact ring
B. upper wear bush
C. lower wear bush
The upper wear bush and the impact ring must be
replaced in a workshop fitted out for this purpose.
◆
Replace the lower wear bush when its inside
diameter is greater than the maximum
permissible diameter.
◆
When replacing the lower wear bush check the
inside diameter of the upper wear bush using
inside callipers (part number 3363 0949 52).
◆
Replace the upper wear bush and the impact
ring when the inside diameter is greater than
the maximum permissible diameter.
◆
Replace the impact ring if you find chips and
cracks.
HB 2000, 2000 DP, 2500, 2500 DP Safety and operating instructions
© Construction Tools GmbH | 3390 5090 01 | 2016-05-23
Original instructions
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