Maintenance
91
Topping up hydraulic oil
Pay attention to utmost cleanliness when servicing the hydraulic system.
This service may only be carried out after the hydraulic oil has cooled down.
All hydraulic cylinders have to be extended half way (see
figure), the boom has to be in line with the excavator, the
dozer blade has to be lowered to the ground and the ex-
tendable track width has to be set to standard track width.
Open the engine hood (page 74).
Remove the oil filler cap (1).
Insert a clean funnel into the filler port.
Fill hydraulic oil to half way up the sight glass (1).
Screw in the oil filler cap.
Start the excavator and operate all control functions.
Check again the oil level of the hydraulic system.