SHAFT ASSEM. 1S1393 - Caterpillar

Illustration 1 g03341847
Illustration 2 g03342148
Pin Puller Hydraulic System
(1) Pin Puller Cylinder
(2) Head End Pressure
(3) Solenoid Valve
(4) Manifold
(5) Oil from Transmission Case
(6) Return to Tank
(7) Rod End Pressure This circuit utilizes the power train oil circuit to drive a cylinder that is used to pull the ripper shank pins. A small two position valve is used to switch the position of the cylinderThe pin puller hydraulic system consists of two main components: solenoid valve (3) and pin puller cylinder (1). Solenoid valve (3) is controlled by a toggle switch that is located in the operator compartment.Supply oil for the pin puller hydraulic system is supplied from the back of the transmission housing. Supply oil enters manifold (4) through line (5).When the pin puller switch is in the HOLD position, the oil is blocked by solenoid valve (3). The oil in both ends of cylinder (1) is also blocked.When the pin puller switch is moved to the DISENGAGE position, a signal is sent to solenoid valve (3). Solenoid valve (3) shifts and oil pressure from line (5) is sent to line (2). This oil travels to the head end of cylinder (1) and the cylinder rod extends. As the cylinder rod extends, the ripper shank pin is removed from the ripper shank. Return oil from the rod end of the cylinder returns to manifold (4) through line (7). Solenoid valve (3) directs the return oil through line (6) to the tank.When the pin puller switch is moved to the ENGAGE position, a signal is sent to solenoid valve (3). Solenoid valve (3) shifts and oil pressure from line (5) is sent to line (7). This oil travels to the rod end of cylinder (1) and the cylinder rod retracts. As the cylinder rod retracts, the ripper shank pin is inserted in the ripper shank. Return oil from the head end of the cylinder returns to manifold (4) through line (2). Solenoid valve (3) directs the return oil through line (6) to the tank.