Hyundai HX145LCR Manual page 128

• • Parking brake ON Parking brake ON
When the control lever is returned to neutral position, the circuit between control valve and motor
is blocked. As oil pressure in spool chamber drops to zero and the counter balance spool returns
to neutral position. At the spool neutral position, notch ⓐ is disconnected from oil supply port A,
instead, brake chamber oil is drained to tank through brake orifice which is center opened.
Brake
Brake
piston
chamber
Friction plate
SECTION C-C"
Counter
Brake
spring
orifice
2-76
Brake fluid pressure way
C
A Port
(IN Port)
Counter
C"
a
B Port
(OUT Port)
spool
145Z9A2TM09