Gear Pump
The tandem gear pumps are located on the back of the engine. The gear pumps are driven by the engines flywheel.
The gear pumps supply oil to the implements main circuit and the travel circuit.
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Main hydraulic pumps (1) Outer gear pump (2) Inner gear pump | |
The outer gear pump (1) is located farthest from the engines flywheel. The inner gear pump (2) is located closest to the engines flywheel.
The outer gear pump (1) supplies oil to the left travel control valve, the swing control valve, and the stick control valve. The inner gear pump (2) supplies oil to the right travel control valve, the boom control valve, the bucket control valve, and the swing boom control valve. Both the outer gear pump (1) and inner gear pump (2) supply oil to the blade/telescope control valve, and the auxiliary control valve.
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