Performance Of Oil Change - Kesla 2014 User Manual

MAINTENANCE

8.7.6 Performance of oil change

- The lifting, transfer, extension boom and the grapple cylinder are pushed all the way out.
- Remove the hoses of the rod side of the cylinder from the cylinders and the return hose from the
hydraulic system. The quick connector that may be in the return hose is removed or a loose coun-
terpart is installed in the quick connector so that the return line would be open.
- The rod side hose ends of the return hose and lifting cylinder are placed in the waste oil contain-
er.
- The cylinders are pushed in.
- The boom grapple swings are emptied by turning both of them by hand a few times from one ex-
treme position to another.
- The rest of the hoses are disconnected from the cylinders. Clean oil is pumped through each
hose line until the dirty oil has been removed.
- The hoses are installed and the cylinders are aired by running each motion in turn a few times
from one extreme position to another.
- Use great caution, since the air in the system can lead to sudden movements of the crane.
- Execute the next oil change like after the first installation.
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