Hyundai HX145LCR Manual page 142

5) 5) BRAKE VALVE BRAKE VALVE
(1) (1) Structure Structure
The brake valve portion mainly consists of the following parts:
①
Spool Spool
By shifting the spool (31), the discharged oil from hydraulic motor is automatically shut off or
restricted according to the condition and give the effect of holding, accelerating, stopping and
counterbalance operations.
(See page 2-66, (2) Operation)
②
Check valve (built in the spool) Check valve
This valve is located in the oil supplying passage to hydraulic motor, and at the same time
functions to lock oil displacement. Therefore, this valve serves as not only a suction valve but
also a holding valve for hydraulic motor.
31 Main spool
33 Spring
35
34
34 Restrictor
35 Restrictor spring
2-90
31 37 36
36 O-ring
37 Spring seat
33
125LCR2TM28