Maintenance and service work 3.25 Monitoring the hydraulic oil and the return filter indicator lights 84
83
Monitoring is ensured by indicator light 83 (hydraulic oil temperature) and indicator light 84 (return filter contamination) on the indicating instrument.
Caution! Indicator light 84 on the indicating instrument comes on if the resistance of the oil flow in the return filter is too high! ☞ The filter element is dirty and must be immediately replaced by an authorised workshop Indicator light 83 on the instrument panel comes on if the hydraulic oil temperature is too high! ☞ Check the hydraulic oil level and fill up missing oil. Have the hydraulic oil replaced by an authorised workshop if it is very dirty, however at the latest at 1500 service hours or once a year • – see Maintenance plan (overview) on page 3-5
1
Fig. 60 : Indicator light for return filter
l
Notice! Indicator light 84 on the indicating instrument can come on in cold weather immediately after starting the diesel engine. This is caused by increased oil viscosity. In this case: • Set engine speed so that indicator light 84 on the indicating instrument goes out • Bear in mind the instructions concerning warmup
3-28
Serv-HB 40702 – Edition 2.0 * 407-02s0322_Wartung.fm
