Manitowoc GROVE GMK4090 Maintenance Manual page 260

Maintenance work on the superstructure
8.6 Hydraulic system
Taking oil samples
8 - 38
•
Switch the engine off.
•
Remove the hose;
•
Seal the sample container and dispatch it;
laboratory , p. 7 - 99.
•
Determine the condition of the oil;
p. 7 - 99.
The MLS gauge port (1) is located on the
bracket (2). When a hydraulic function is run
(tilt the crane cab), oil can be taken at the
gauge port.
•
This maintenance work must be performed
by a team of two persons:
– Person 1 stands at the console (2) and fills
the sample container.
– Person 2 sits in the crane cab and controls
the tilting of the crane cab.
•
Clean the gauge port and connect the
hose (1) at the port (3);
the hose , p. 7 - 97.
•
Put the hose end (2) into the receptacle (4).
•
Start the engine from the crane cab.
•
Tilt the crane cab.
•
Allow 2 litres (0.5 gal) of oil to flow into the
receptacle.
•
Switch the engine off and put the hose
end (2) into the sample container (5).
•
Start the engine from the crane cab.
•
Tilt the crane cab.
•
Allow 0.3 litres (0.08 gal) of oil to flow into
the sample container.
à
Disconnecting the hose , p. 7 - 98.
à
3 302 649 en
à
Connecting
à
Dispatch the oil sample to the
Determining the quality of the oil ,
Maintenance manual
GMK4090