CASE CRAWLER DOZER D180C Hydraulic Schematic

Technical Highlights

• Model: CASE D180C Crawler Dozer

• Document Type: Factory Hydraulic Schematic

• File Format: PDF • 1 page • Color-coded schematic

• Part Number: RAC 47714317

• Circuit Line Colors:
   • Red: Hydraulic Pressure
   • Orange: Charge Pump Pressure
   • Cyan: Return to Tank / Pump Inlet
   • Purple: Track Drive Circuit
   • Blue: Track Drive Case Drain
   • Green: Load Sense

Coverage

• System Overview
   • Simplified hydraulic architecture for the D180C crawler dozer with circuit legend and flow indicators
   • Color-based circuit identification for pressure, charge, and return lines

• Main Hydraulic Subsystems
   • Track Drive Circuit: Left and right pump assemblies, drive motors, motor control solenoids, flushing valves, and park brake release systems
   • Implement Circuit: Tilt, lift, and angle spools with regeneration check and flow compensator spools
   • Ripper Circuit (Optional): Dedicated spool, hydraulic lock valve, and auxiliary ports for ripper control
   • Fan Drive Circuit: Motor, reverse solenoid valves, pilot control for fan direction and speed
   • Charge and Pilot Systems: Includes charge pump, filters, pilot accumulator, and pilot pressure reducing valves

• Component Reference List (77 Items)
   Key components include:
    • Left/Right Track Drive Motor Assemblies
    • Pump Control Solenoid & Piston Assemblies
    • High-Pressure Relief and Cut-Off Valves
    • Fan Drive Motor, Reverse Pilot Valves, and Pressure Switches
    • Pilot Pressure System & Accumulators
    • Tilt, Lift, and Angle Cylinder Assemblies
    • Charge Pump, Reservoir, and Filter Units

• Hydraulic Pressure Specifications
   • Track Drive Pressure: 420 bar
   • Charge Pressure: 25 bar
   • Implement Pressure: 250 ±3.5 bar
   • Load Sense Relief Pressure: 350 bar
   • Return Circuit: 30 bar max

Delivery

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