Hyundai HX145LCR Manual page 109

b. When all of the RCV lever (1) are set the neutral position, the spool (5) returns to right.
Then, the parking piston (15) is moved lower by spring force and the return oil from the
chamber G flows back to tank port.
At this time, the brake works.
16
15
1 RCV lever
2 Main control valve
5 Spool
8 Spring
15 Parking piston
16 Brake spring
Time delay valve
G
8
P3
2-57
5
SH
PG
1
2
140WF2SM37