VALVE GP-SOLENOID 1230155 - Caterpillar

Pump Control And Direction Control Valve
Pump Control And Direction Control Valve Location
(1) Direction control valve. (2) Pump control.Swashplate movement is controlled by pump control (2) and direction control valve (1). When a solenoid of the direction control valve is energized, pressure oil is allowed to pass through the valve and move the pump control.
Operator Console
(3) Speed limiter control. (4) Propulsion control lever.The direction control valve on the vibration pump is actuated by an electronic circuit in the control box under the operator console.When the vibration on/off switch is in the ON position, voltage is available at each direction control valve solenoid (7). When propulsion control lever is moved forward, an electronic circuit will connect the solenoid to ground. Electric current now flows to the forward vibration solenoid.
Direction Control Valve
(5) Spring. (6) Valve spool. (7) Solenoid.As soon as current is supplied to either solenoid (7), the solenoid will energize the valve. The force which is created will move spool (6). Charge pump pressure oil will go around the spool into one end of the pump control.When the propel lever is moved back to the neutral position, the electronic circuit opens. Electric current flow to solenoid (7) stops. The force of either spring (5) will move spool (6) back towards the neutral position. The forces of springs (5) are identical. They balance one another and maintain the spool in the neutral position.
Pump Control
(8) Piston. (9) Piston chamber. (10) Spring. (11) Displacement reduction stop screw.When the direction control valve is energized, pressure oil passes through a 0.80 mm (.031 in) orifice. This orifice is in the inlet port of the pump control. The orifice makes the movement of the control piston smooth and progressive. Pressure oil then passes into piston chamber (9) and pushes piston (8). The piston moves until it reaches the end of its stroke. The piston stroke is controlled by stop (11).As the piston moves, it inclines the swashplate of the pump. The movement stops when the swashplate is at its maximum angle.Moving the propulsion control lever back to the neutral position stops the electric current flow to the direction control valve. The direction control valve will then stop the flow of pilot line oil to the pump control. Springs (10) in piston chamber (9) will bring piston (8) back to its neutral position. The swashplate will also return to its neutral position. Pilot oil which is in chamber (9) is forced back through the orifice on the return line. This makes the return action of the control piston smooth and progressive. It also avoids any sudden jerking motion when the compactor is stopped.Vibration Motor
Vibration Motor
(1) Front cover. (2) Bearing. (3) Motor housing. (4) Retainer. (5) Spring washers. (6) Piston (one of nine). (7) Cylinder barrel. (8) Head. (9) Portplate. (10) Oil passage. (11) Bearing. (12) Shaft. (13) Shim. (14) Cup. (15) Swashplate.The front drum vibration motor is a fixed displacement type piston motor. The motor is mounted on a side frame drum support. The vibratory mechanism is