Maintenance and servicing work 3.19 Replacing hydraulic oil Danger! Caution when draining hot hydraulic oil and removing the filter element –
Danger of burns! Wear protective gloves Use a drain coupling with a sufficiently long hose
C
D
B
A Fig. 45: Drain valve with cap
3-32
Proceed as follows: • Park the machine on level ground • Lower the loader unit completely. To do this: push the lever forwards • Tilt in the bucket completely. To do this: push the lever to the left • Stop the engine • Open the engine cover • Unscrew filler and breather filter B • Place a suitable container to collect the oil as it drains, with a minimum capacity of 40 l • Remove cap C of the drain valve • Screw drain coupling D with a sufficiently long hose onto the drain valve Ensure that the end of the hose is in container used for collecting the oil The drain valve opens and the oil drains into the container • Remove the filter insert of the filler and breather filter B • Reinsert the clean filter insert • Rinse the hydraulic oil tank with a little hydraulic oil • Unscrew the drain coupling from the drain valve • Screw on cap C of the drain valve • Replace the hydraulic oil return filter • Fill in fresh hydraulic oil up to the middle of oil level sight glass A • Screw on the new filler and breather filter B • Start the engine With the engine running at low speed: • Fully extend and retract the lift and tilt rams on the loader unit • Turn the steering wheel to the left and right several times, from lock to lock • Retract all the hydraulic rams again • Stop the engine • Check the hydraulic oil level and fill up if necessary
Serv-HB 34900/01 – Edition 1.0 * 34901_0320_Wartung.fm
