DIFFERENTIAL & BEVEL GEAR GP 2885664 - Caterpillar

Hydraulic Pump Flow and Pressure Control System
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Pump compartment (36) Front pump (37) Rear pump (38) Pilot pump (39) Fan pump (40) Swing pump
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Main control valve (41) Main control valve (boom side) (42) Main control valve (stick side)This machine is driven and controlled by the following five systems:
The main hydraulic system controls the cylinders and the travel motors.
The swing hydraulic system controls the swing motors.
The pilot hydraulic system supplies oil to the main pump and the control circuits.
The electronic control system controls the outputs of the engine and pump.
The separate cooling system supplies oil to the fan motors in order to cool the engine coolant and hydraulic oil.The main hydraulic system delivers oil flow from front pump (36) and rear pump (37) in order to control the following components: bucket cylinders (2), stick cylinder (3), bottom dump cylinders (4), boom cylinders (5), right travel motor (6) and left travel motor (8) .Front pump (36) and rear pump (37) are variable displacement piston pumps. The performance of the pumps is equal, and the pumps are arranged in series.Front pump (36) is directly connected to the engine by a coupling. The front pump delivers oil to the center manifold of