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| Illustration 1 | g01024154 |
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Secondary steering pump | |
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| Illustration 2 | g06005761 |
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Secondary steering pump (1) Idler gear (2) Dive shaft (3) Pump housing (4) Drive gear | |
The secondary steering pump is a ground speed driven pump that turns as long as the machine is moving.
Drive shaft (2) turns drive gear (4). Drive gear (4) engages idler gear (1). A seal is formed by the gears against pump housing (3). As the gears turn, oil enters through the inlet port. The oil is trapped between the gear teeth and the pump housing. The oil is pulled around the outside of the gears. The oil is then forced out the outlet port.
The oil flows from the secondary steering pump to the secondary steering diverter valve. When the machine is moving, the oil always flows to the secondary steering diverter valve.
With a primary steering pump failure, or stopped engine, the secondary steering diverter valve allows secondary steering pump oil to flow to steering control valve.