TUBE AS-OIL SUPPLY 1415086 - Caterpillar

Note: Load signal resolver valve (11) is not used in the Ride Control System.The ride control system is made up of the following components: lift cylinders (3), ride control accumulator (2), ride control solenoid valve (8), shuttle valve (9), head end solenoid valve (5), head end check valve (6) and rod end solenoid valve (4).
Illustration 3 g01200595
(13) Ride control switch The ride control system is controlled by ride control switch (13). The ride control switch is a three-position switch that is located on the right side control panel in the cab. The three positions of the ride control switch are OFF, AUTO, and SERVICE.
Illustration 4 g01195541
Cab screen
(14) Indicator Light (ride control) Indicator light (14) will be illuminated when Ride Control is ON.OFF Position
When the key start switch is in the ON position and the ride control is in the OFF position, ride control solenoid valve (8) is actuated. The valve spool in solenoid valve (8) shifts to the left. Head end solenoid valve (5) and rod end solenoid valve (4) are not actuated. In this position, the flow of the oil from the accumulator to the valve spool of shuttle valve (9) is blocked. This also prevents the oil from the head end of lift cylinders (3) from flowing to accumulator (2) which may eventually cause damage to the components of the ride control system.The oil pressure in the head end of the lift cylinders will move the spool in shuttle valve (9) to the right. Pump supply oil flows to check valve (10). Check valve (10) opens and the pump supply oil will fill accumulator (2).When the key start switch is in the OFF position, solenoid valve (8) is de-energized and the spool in solenoid valve (8) is moved to the right. The oil pressure in accumulator (2) acts against the right end of the valve spool in shuttle valve (9). If the oil pressure in the head end of the lift cylinders has decreased, the valve spool in shuttle valve (9) moves to the left. When the spool is moved to the left, the path of oil from accumulator (2) to the hydraulic tank is opened. The oil in accumulator (2) will flow to the hydraulic tank. The spool in shuttle valve (9) will stay to the left until the pressures on each end are equalized. The spool will be centered when the pressure between accumulator (2) and the head end of lift cylinders (3) is equal.Automatic Ride Control
In order to initiate the automatic ride control, push in on the top of the ride control switch. Refer to Illustration 3 for the location of the ride control switch. When the ride control system is in AUTO position, indicator light (14) on the dashboard will be illuminated. Refer to Illustration 4.In the AUTO position, the ride control system functions automatically when the machine's ground speed increases above approximately 9.5 km/h (6.0 mph). There is a one second delay for pressure equalization time before ride