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7.1
EVERY 8 RUNNING
HOURS/EVERY WORKING SHIFT
HOSES
Check the tightness of all the hoses and
connections. Repair all leakages immediately.
TOP BEARING SEAL
Check the condition of the top bearing seal.
The seal prevents the grease from flowing into
the cavity of the crusher. A possible leakage
can be noticed when grease appears on the
main shaft above the shaft nut (figure 7.1.1.).
A damaged seal must be replaced as soon as
possible (at least at the next liner change). If
grease leaks out of the top bearing, the bearing
may run dry and may result damage. See more
detailed instructions in chapter 9.2.
CRUSHER SETTING
Check, if the crusher setting keeps constant
during crushing. If the setting increases during
crushing and returns when load decreases, air
should be bled from the system.
If the crusher setting increases continuously,
the reason might be a leakage of adjusting
cylinder seal, pressure relief valve, needle
valve, direction valve or shock valve. Find the
leakage and repair it. A reason for the setting
increase might also be overload, which opens
the pressure relief valve. The setting control
system will start the adjusting pump which
returns the setting back to desired value when
the overload situation is over. When the
manual mode is in use the adjusting pump has
to be turned on separately.
Figure 7.1.1 Replace top bearing seal, if
there is grease on the main shaft
Periodical maintenance
GP200S
12/99
140548
7-1
