... , A/C, Quick Change. 1. SG920 fully hydraulic wheel loader adopts the LR4108G engine , hydraulic transmission, countershaft power shift gear ... and short-distance transporting job.2. SG920 mining wheel loader adopts the load sensing fully hydraulic steering, air over ... promote efficiency obviously. 3.SG920 lower coal seam wheel loader adopts the static hydraulic transmission, air over oil actuated ...