3.9 STARTING THE ENGINES OPERATION Hydraulic Oil Viscosity and Temperature Chart REMARK The starting and operating temperatures in the above chart depend on the hydraulic oil viscosity grade used in the system. See decal in the operator’s cab for viscosity grade of the factory oil filling. For example: Hydraulic system filled with VG 22 viscosity grade oil. 1. Lowest permissible starting temperature (ambient tempera- ture): -20 ° C, see column "1" 2. Operating temperature: min. + 8 ° C max. + 55° C, see column ”2” 220 Rated viscosity at 40° C of hydraulic oil grade: Starting temperature (max.
1000 cSt) -1- Operating range (100 - 10 cSt) -2- ISO VG °C °C HLP 22 -20 8 - 55 HLP 32 -14 16 - 70 HLP 46 -6 25 - 80 HLP 68 0 32 - 85 HLP 100 +5 39 - 85