BREATHER 4493392 - Caterpillar

Illustration 1 g00711159
Schematic for the Ride Control System (1) Lift cylinders. (2) Ride control accumulator. (3) Ride control solenoid valve. (4) Ride control diverter valve. (5) Pilot oil line. (6) Lift valve spool. (7) Implement pump. (8) Hydraulic tank. (9) Pilot pump.The optional ride control system provides a means for dampening the bucket forces which produce a pitching motion as the machine travels over rough terrain.The main components of the ride control system are the following components: lift cylinders (1), ride control accumulator (2), ride control solenoid valve (3) and ride control diverter valve (4).
Illustration 2 g00713810
Location of the Ride Control Accumulator (2) Accumulator.Ride control accumulator (2) is located in front of the articulation joint on the right side of the front end frame. Ride control accumulator (2) contains a precharge of nitrogen gas. Oil pressure in lift cylinders (1) forces a piston in the ride control accumulator against the nitrogen gas.
Illustration 3 g00713817
Location of the Ride Control Diverter Valve (3) Ride Control Solenoid Valve. (4) Ride Control Diverter Valve.Ride control diverter valve (4) is located on the front loader frame behind the access plate. The ride control diverter valve controls the flow of oil to the ride control accumulator.Ride control solenoid valve (3) is attached to ride control diverter valve (4). The ride control solenoid valve controls the movement of the valve spool in ride control diverter valve (4).
Illustration 4 g00713821
Location of the Control Panel (10) Ride Control Switch.The ride control system is controlled by ride control switch (10). The ride control switch is located on the operator panel in the cab.OFF Position
When the lift control valve is in the HOLD position and the ride control switch is in the OFF position, ride control solenoid valve (3) is closed. In this position, the flow of pilot oil to ride control diverter valve (4) is blocked.ON Position
When the lift control valve is in the HOLD position and the ride control switch is in the ON position, ride control solenoid valve (3) is open. In this position, pilot oil flows into ride control diverter valve (4) .As the machine travels over rough terrain with a loaded bucket, the force of the load acts against lift cylinders (1). When the load acts against the head end of the lift cylinders, the head end oil flows into ride control accumulator (2) .Ride control accumulator (2) contains a bladder that acts as a shock absorber by resisting the oil flow. Makeup oil flows through diverter valve (4) and into the rod end of the lift cylinders.Reference: For more information on operating the ride control system, refer to the Service Manual module Operation and Maintenance Manual, "Ride Control" for the machine that is being serviced.