FILTER GP- 5253457 - Caterpillar

Illustration 1 g00758072
Hydraulic Subsystem Schematic (1) Filter (2) Charge pressure relief valve (3) Combination valves (4) Charge Pump (5) Hydraulic pump (6) Motor (7) Main circuit oil pressure line (8) Main circuit oil pressure return line (9) Displacement control spool (10) PCP (11) Sensing piston (12) Feedback linkage (13) Servo (14) EDCThe hydraulic subsystem consists of filter (1), hydraulic pump (5) and motor (6) .The hydraulic oil tank is the only component that is common to the machine systems and common to the water spray system.The hydraulic subsystem is a closed circuit system.When you turn the water spray system to the ON or the system is pumping, PCP (10) receives an electrical signal, and the flapper valve is moved in order to restrict one of the internal orifices. This creates a back pressure in the orifice. This forces control oil to the left end sensing piston (11) and the piston moves to the right. Feedback linkage (12) between sensing piston (11) and displacement control spool (9) will move displacement control spool (9) to the right. This allows charge pressure to be ported to one side of servo control piston (13), while the opposite side of the case is venting.The servo control piston (13) moves the swashplate to a specific angle and the swashplate ports the main circuit oil pressure (7) to the combination valve (3). The main circuit oil pressure (7) moves to motor (6). If the pressure in the system rises above 21000 kPa (3046 psi), the high pressure relief valve within combination valve (3) opens. This allows high pressure oil to flow to the charge system.Return oil in line (8) from motor (6) flows back to the return side of combination valve (3), and then to pump (5). If the pressure in the return side of the circuit drops below charge pressure, the charge check valve in combination valve (3) will open. This allows charge oil to replenish the oil that is lost in the return side of the loop.
Illustration 2 g00758111
The view of the right side of the engine is on the RM/SM-350 machines. (1) Charge filter (5) Hydraulic Pump (14) EDC
Illustration 3 g00758115
The view of the frame rails is on the RR/SS-250 and RR/SS-250B machines. (1) Charge filter (5) Hydraulic pump (14) EDCHydraulic pump (5) is mounted on the auxiliary pad on the right side of the engine on the RM/SM-350 machines. The RR/SS-250 and RR/SS-250B machines use the same pump. The pump is belt driven from the rotor drive shaft.The electronic control subsystem receives input from the control dial. The location of the electronic control subsystem is on the flow control box. The signal controls the output of hydraulic pump (5). The output of hydraulic pump (5) drives hydraulic motor (6). Hydraulic motor (6) drives the water pump. By controlling the amount of flow from the hydraulic pump (5), more water or less water will be injected into the mix.
Illustration 4 g00758153
View of Right Front Fender (6) Hydraulic motor