In any case, change the hydraulic oil every year (no more than 200 working days). Oil cleaning is very important to the life of hydraulic system. Regular and correct maintenance can prolong its service life.
The recommended hydraulic oil standards are as follows:
ISO vg32 is used in winter, the operating temperature is - 20-65 ° C, and the operating temperature is - 5-74 ° C in summer.
Vg32 index: Center viscosity value 32mm2 / S (40 ℃)
Vg46 index: Center viscosity value 46mm2gs (40 ℃)
Special attention: when replacing important components, purchase them from the original factory, so as to avoid using inappropriate components to make the system unable to work normally.