3.3.3.5 Gearbox control

1 – speed shifting fork, 2 – range switching fork, 3 – bracket; 4, 20 – bolt; 5 – shaft; 6 – switch; 7 – hydraulic valve group; 8 – pressure sensors; 9, 12 – oil pipelines; 10 – center pin; 11 – control cylinder; 13, 15, 19 – nut; 14 – double-end bolt; 16 – fork; 17 – pin; 18 – lever. Figure 3.3.6 – Mechanism of switching between the higher and the lower passes of the reduction unit 3.3.3.5 Gearbox control The gearbox controls are located in the tractor cab: - the ranges are switched by means of a lever A (figure 3.3.7); - the speeds of forward and reverse travel are shifted by means of a lever B; - the lower and the higher passes “L-H” of the reduction unit are turned on by means of buttons on the speed shifting lever B.