2) 2) LEFT TURN LEFT TURN 8' MCV 27 27 11 S1 X1 X2 X3 28 PS 1 X1 X2 22 Return line B1 B2 23 24 25 21 L1 L2 S1 S2 L3 L4 Fan & brake pump 760F5SE03 В When the steering wheel is turned to the left, the pressure oil from the steering unit fill on the left side chamber of main steering spool (M), and main steering spool moves to the right in the direction. At the same time of moving of main steering spool, LS signal will be blocked. Refer to page 5-8. If LS signal of main steering spool is blocked, it cause to increase pressure of left chamber of priority valve and then priority valve to be pushed to left side. Consequently, oil will flow via CF of priority valve to main spool.
That oil will push steering cylinder rod out and it will cause wheel loader to be steered to left side. The rate of movement of main steering spool is concluded as flow rate, which is kept in left chamber from steering unit. Furthermore the rate controls speed of movement for cylinder. В В В 5-4 14 LH 9 39 CL ELECT 2 1 RONICS 4 3 R M CF Ps Ts EF P LS T