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Case 580SM Hydraulic Tank Overview and Related Specifications
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Machine Background
The Case 580SM is a popular series II loader backhoe known for its versatility, power, and reliability in a variety of earthmoving and material handling applications. It features a turbocharged 4-cylinder diesel engine with advanced hydraulics, providing effective performance in construction and agricultural settings.
Hydraulic System and Tank Capacity
  • The hydraulic system operates using a variable displacement axial piston pump mounted on the transmission.
  • The system delivers flow rates of approximately 40 gallons per minute at pressures around 3100 psi, supporting loader and backhoe functions with simultaneous multi-function capabilities.
  • Hydraulic tank capacity is approximately 31.5 gallons (119 liters), with a full-flow replaceable 7-micron oil filter cartridge having a condition indicator light for proactive maintenance.
  • A heavy-duty oil cooler is integrated to maintain optimal hydraulic fluid temperature under demanding workloads.
  • Hydraulic system design enables pressure-compensated loader valves for smooth operation and positive hold float, enhancing machine control during lifting and digging.
Functions and Capacities
  • Loader lift capacity at full height approximately 6,182 pounds (2,804 kg) for general purpose buckets.
  • Breakout forces for lift and dump cylinders exceed 9,000 pounds-force, facilitating handling of dense materials efficiently and reliably.
  • Multifunctional control valve operation allows simultaneous boom, bucket, and auxiliary hydraulic actions.
  • Hydraulic auxiliary circuits include proportional thumb switches with detent functionality for precision attachment control.
Maintenance and Components
  • Routine filtering and oil changes are essential due to the hydraulic system’s sensitivity to contamination.
  • Condition indicator lights alert operators to filter service needs, minimizing unexpected downtime.
  • The hydraulic tank is equipped with a suction filter to protect pump components from debris.
  • Use of genuine or high-quality replacement filters and oils is recommended to maintain system longevity and performance.
  • System access is facilitated by design features like engine compartment swing-out trays, easing routine maintenance interventions.
Dimensions and Additional Information
  • Basic loader/backhoe fuel tank capacity is approximately 31.4 gallons (119 liters).
  • Engine power reported at gross 97 hp and net 90 hp at 2200 rpm, supporting hydraulic system operations.
  • Transmission-related flow rates work in parallel with hydraulic pump outputs to maintain system efficiency.
  • Operator safety enhanced by features such as parking brakes and intuitive control layouts.
Glossary of Terms
  • Variable Displacement Pump: Pump that adjusts fluid flow based on demand, increasing hydraulic efficiency.
  • Pressure-Compensated Valve: Valve that maintains consistent pressure regardless of flow demand.
  • Breakout Force: Maximum force a hydraulic cylinder can apply to dig or move material.
  • Suction Filter: A filter on the intake side protecting the pump from debris.
  • Detent: Mechanism that locks a control or valve in position.
Conclusion
The Case 580SM hydraulic tank and associated system components form a critical backbone ensuring powerful and smooth hydraulic performance. Proper tank capacity, effective cooling, and quality filtration are essential to system reliability. Maintenance leveraging condition indicators and adherence to oil change intervals prolong machine life, while hydraulic capacities enable the 580SM to handle demanding loader and backhoe operations productively in diverse environments.
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