Maintenance and servicing work Monitoring the hydraulic oil and the return filter 42
43
Two indicator lights on the indicating instrument monitor the return filter (dirt) and the oil temperature • Indicator light 42 – oil temperature • Indicator light – return filter flow (dirt)
Caution!
Fig. 41: Preheating start switch
Indicator light 43 on the indicating instrument comes on if the flow resistance in the return filter is too high! The filter element is dirty and must be replaced by an authorised workshop The indicator light 42 on the indicating instrument comes on if the operating temperature of the hydraulic oil is too high! Check the hydraulic oil level (not enough oil in the tank) The filter element or the hydraulic oil is dirty and must be replaced by an authorised workshop
Notice! Indicator light 42 on the indicating instrument can come on in cold weather immediately after starting the engine. This is caused by increased oil viscosity. In this case: • Set engine speed so that the indicator light goes out • Bear in mind the instructions concerning warmup
Serv-HB 34900/01 – Edition 1.0 * 34901_0320_Wartung.fm
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