Hyundai HX130LCR Manual page 70

(3) TRAVEL STRAIGHT FUNCTION
P2 Bypass passage
Straight travel
spool
P2 port
This function keeps straight travel in case of simultaneous operation of other actuators (boom, arm,
bucket, swing) during a straight travel.
During travel only :
①
The hydraulic fluid of the pump A1 is supplied to the travel right motor and the pump A2 is
supplied to the travel left motor.
Thus, the machine keep travel straight.
The other actuator operation during straight travel operation :
②
When the other actuator spool (s) is selected under straight travel operation, the straight travel
spool is moved.
The hydraulic fluid from pump A2 is supplied actuator through P2 and P1 parallel pass and travel
motors through orifice at side of straight travel spool.
The hydraulic oil fluid from pump A1 is supplied to travel motors (left/right).
Therefore, the other actuator operation with straight travel operation, hydraulic oil fluid from pump
A2 is mainly supplied to actuator, and the hydraulic oil fluid form pump A1 is mainly supplied to
travel motors (left/right).
Then the machine keeps straight travel.
P2 Parallel passage
P1 Bypass passage
2-26
P1 port
Orifice
Check valve
Tank port T1
P1 Parallel passage
14092MC19