SENSOR GP-TEMPERATURE 2666659 - Caterpillar

Illustration 2 g00638666
Main control valve (front view) (1) Control valve for Stick II (2) Bucket control valve (3) Line relief valve (boom cylinder rod end) (4) Boom drift reduction valve (5) Control valve for Boom I (6) Attachment control valve (7) Left travel control valve (11) Main relief valve (13) Straight travel control valve (14) Right travel control valve (15) Swing control valve (17) Load check valve (stick cylinder) (18) Control valve for Stick I (19) Line relief valve (stick cylinder head end) (20) Line relief valve (stick cylinder rod end) (21) Boom II control valve (22) Return port (23) Line relief valve (bucket cylinder head end) (24) Line relief valve (boom cylinder head end) (25) Load check valve (boom cylinder) (27) Inlet port (pilot pump) (28) Inlet port (left pump) (29) Inlet port (right pump) (40) Right body (41) Left bodyMain control valves (9) are located in the hydraulic system between the pumps and actuators (cylinders and motors). Depending on the machine operation, components and passages in the valves control oil flow and pressure in the circuits from the right pump (33), left pump (34) and pilot pump (36) so that the actuators operate in optimum speed and in the correct direction.The main control valves consist of right body (40) and left body (41). These two bodies are coupled together with bolts in order to make one assembly. The following control valves are in parallel in the right body (40) .
Straight travel control valve (13) .
Right travel control valve (14) .
Swing control valve (15) .
Control valve (18) for Stick I.
Boom II control valve (21) .The following control valves are in parallel in the left body (41) .
Left travel control valve (7) .
Attachment control valve (6) .
Control valve (5) for Boom I.
Bucket control valve (2) .
Control valve (1) for Stick II .The right body has return port (22). Return oil from the cylinders and/or the motors enters the main control valves. Return oil then flows through return ports (22), through return line (37) and into hydraulic tank (32). The right body has inlet ports (28) and (29). Left pump oil (34) enters the main control valves through inlet port (28). Right pump oil (33) enters the main control valves through inlet port (29) .The left body has inlet port (27). The pilot pump oil (36) enters the main control valve through inlet port (27). The right pump oil flow and left pump oil flow are controlled by the main control valves. The oil flow is supplied to cylinders and/or motors that are selected for operation.Right Body (40)
Each body has other important components.
Main relief valve (11) that limits the main hydraulic system pressure.
Line relief valve (stick cylinder line) (19) and