Epiroc MB Series User Manual

Safety and operating instructions
44 © Construction Tools GmbH | 3390 5201 01 | 2023-05-15
Original Instructions
7.9 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 en-
closed test gauge. The diameter measured must not ex-
ceed the maximum permissible diameter D
max
(measur-
ing point see below).
Type Size information on test
gauge
D
max
MB750 E Ø100 103 mm
(4.06in.)
MB1000 E Ø110 115 mm
(4.53in.)
MB1200 E Ø120 125 mm
(4.92in.)
MB1500 E Ø135 140 mm
(5.51in.)
MB1650 E Ø140 145 mm
(5.71in.)
n
Check the inside diameter of the lower and upper
wear bush whenever replacing the working tool, but
at least once every 100operating hours.
n
Clean the area around the impact ring to enable a
visual check.
The lower wear bush can be replaced on site. Consult
the Epiroc Customer Center / Dealer in your area.
n
Remove all remnants of lubricant from the inside of
the lower breaker part before installing new parts.
A
B
C
A. impact ring
B. upper wear bush
C. lower wear bush
The upper wear bush and the impact ring must be re-
placed in a workshop fitted out for this purpose.
n
Replace the lower wear bush when its inside diame-
ter is greater than the maximum permissible diame-
ter.
n
When replacing the lower wear bush check the inside
diameter of the upper wear bush using inside cal-
lipers (partnumber3363094952).
n
Replace the upper wear bush and the impact ring
when the inside diameter is greater than the maxi-
mum permissible diameter.
n
Replace the impact ring if you find chips and cracks.

Epiroc MB Series Specifications

General

Brand	Epiroc
Model	MB Series
Category	Industrial Equipment
Language	English