The functions of the replenishing valves are:
1. To give replacement fluid to the low pressure side of the hydrostatic circuit. Replacement fluid is needed
because of normal internal leakage and the controlled flow to the oil cooler for cooling; Function 1 [Figure 30-10-ย ย ย ย 1].
2. To keep high pressure fluid out of the low pressure side of the hydrostatic circuitry; Function 2 [Figure 30-10-1].
