n
Water in oil
–
Increased wear, accelerated ageing of oil.
n
Chips (abrasion) in the oil
–
Open and clean all components in the oil circuit; replace if
necessary.
–
Clean all high pressure hoses in the oil circuit; replace if
necessary.
–
If abrasion is found in the travel circuit you should also
flush the vibration circuit.
–
If abrasion is found in the vibration circuit you should also
flush the travel circuit.
1.
Change the filter element (1).
2.
NOTICE!
Clean the hydraulic tank
Change the oil in case of excessive contami-
nation, oil discolouration or if the oil change
interval is almost due.
Filter the tank content with the filling and filtering unit and
pump it into an oil container.
3.
Mark all hoses and disconnect them from the hydraulic oil
tank.
4.
Clean the oil tank thoroughly from inside; remove the tank
cover, if necessary.
5.
Reconnect all hoses.
6.
Fill the hydraulic oil tank again with the filling and filtering
unit.
Before flushing
Fig. 132
Fig. 133
Hydraulic system – Flushing and bleeding
BW 900-50
134
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