HYDROSTATIC TRANSMISSIONS:
OPERATION AND TROUBLESHOOTING

  1. Operation Theory

    • Drive Requirements

    • Open and Closed Loop

      • Integral Pump/Motor Units

      • Separated Pump/Motor Combinations

    • Capabilities

    • Charge Circuit

    • Cooling Circuit

    • Protecting the System

    • System Control


  1. System Operation: Complete Charge, Cooling, Control and Drive Circuit Explained and Traced

    • Forward

    • Neutral

    • Reverse


  1. Hydrostatic Transmission Troubleshooting

(Eaton, Sundstrand, Denison, Vickers and others)

  • System Operates Hot

  • One Direction Operation Only

  • Sluggish Response

  • Low Charge Pressure

  • High Case Pressure

  • Pump Rotating Group Failure Analysis

  • Motor Rotating Group Failure Analysis

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