3) 3) PARKING BRAKE RELEASED (OLD) PARKING BRAKE RELEASED (OLD) FRONT 24 T1 P2 P1 A1 45 T2 A2 25 REAR A B 21 22 21 P 20 S2 B2 B1 S1 C5 C6 S3 23 Parking brake switch G1 PS 46 B3 C4 C1 C3 T/M G2 23 PS PARKING Return line Parking brake solenoid T2 P 26 6 Return line Return line D A B L S1 B A Main pump 955A4BS04 When the parking brake switch is pressed A position, the solenoid valve is energized and the hydraulic oil controlled the pressure level by the cut-off valve enters the parking brake. It overcomes the force of the spring and pushes the piston rod. This releases the brake.
Therefore, the hydraulic oil pressure is applied to the parking brake piston through the solenoid valve and the parking brake is kept released. 4-6 T1 8