Maintenance 46
8.5.3 Checking the hydraulic oil level
Check, if hydraulic oil level is correct.
The oil should be refilled if the level in the tank is below the MIN level. The oil should be refilled
immediately to the MAX level. If the vehicle uses unusually a lot of oil, it could be caused by a
leak. In this case, check all hoses and repair any leaks. Check the colour and consistency of the
hydraulic oil and check for contamination. If the oil condition is incorrect, it must be replaced
together with the oil filter.
8.5.4 Hydraulic oil change
o Adjustment, maintenance and repair work may only be carried out by qualified people.
o Before carrying out maintenance and repair work, the pressure in the hydraulic system
must be released! The pump must be switched off, all hydraulic cylinders retracted.
Each time the hydraulic oil is changed, the filter cartridges of return filter and ventilation filter must also
be changed (see: Spare parts catalogue).
Dirty ventilation filters damage the oil tank, so they should be replaced according to maintenance plan
(chapter 8.3)
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