LS430 − NEW FEATURES 21 Solenoid Valve 1) Solenoid Valve S1, S2, S3, S4 and SR a. General These solenoid valves use a 3-way solenoid valve. A filter has been provided at the tip of the solenoid valve to further improve operational reliability. Solenoid Valve S1, S2, S3 and SR Control Pressure Control Pressure Filter Line Pressure Drain OFF Condition ON Condition Solenoid Valve S4 259LSK10 Control Pressure Control Pressure Filter Line Pressure Drain OFF Condition ON Condition b. Function of Solenoid Valve S1, S2, S3, S4 and SR 259LSK11 Solenoid Valve Type Function S1 3-way Switches the 1-2 shift valve. Switches the SL1 relay valve. S2 3-way Switches the 2-3 shift valve.
Switches the 5-6 shift valve. S3 3-way Switches the 3-4 shift valve. S4 3-way Switches the 4-5 shift valve. Switches the SL1 relay valve. Switches the reverse sequence valve. SR 3-way Switches the C relay valve. 4 Switches the B relay valve. 1