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Hyster 50 Forklift Overview and Troubleshooting Guide
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Introduction
The Hyster 50 series forklifts, including models like the H50FT, are renowned for their durability and versatility in material handling applications. These internal combustion cushion tire forklifts are commonly powered by LPG engines, such as the PSI 2.4L or Kubota 2.5L, and are designed for both indoor and outdoor operations. With a load capacity of 5,000 lbs and a lift height of up to 11 feet, they are well-suited for warehouses, distribution centers, and manufacturing facilities.
Specifications
  • Load Capacity: 5,000 lbs (2,268 kg)
  • Load Center: 24 inches (610 mm)
  • Engine: PSI 2.4L or Kubota 2.5L LPG
  • Tire Type: Cushion (solid rubber)
  • Mast Options: Two-stage or three-stage
  • Lift Height: Up to 11 feet (3.35 m)
  • Turning Radius: Approximately 7 feet (2.13 m)
  • Ground Clearance: 6 inches (152 mm)
  • Operating Weight: Approximately 8,650 lbs (3,922 kg)
  • Fuel Capacity: 11 gallons (41.6 liters)
  • Hydraulic System Relief Valve Pressure: 2,250 psi (15.5 MPa)
  • Max Speed: 11 mph (17.7 km/h)
Common Issues and Troubleshooting
  1. Engine Starting Problems
    If the forklift fails to start, consider the following checks:
    • Ignition Spark: Ensure the spark plugs are functioning correctly.
    • Fuel System: Verify that the fuel system is delivering fuel properly.
    • Timing Belt: Check for any issues with the timing belt, such as slippage or wear.
    • Fuel Mixer: Inspect the fuel mixer for proper operation; a faulty mixer can prevent the engine from starting.
    For instance, a user reported that after replacing the fuel bottle, the forklift still failed to start. Further investigation revealed that the fuel mixer was not creating sufficient vacuum, leading to starting issues.
  2. Transmission Not Engaging
    If the forklift doesn't move forward or reverse, check the following:
    • Transmission Fluid: Ensure the fluid level and condition are adequate.
    • Directional Control Valve: Inspect for proper operation and any leaks.
    • Solenoids and Linkages: Check for faults that may prevent gear engagement.
    • Drive Motor: Examine for any damage or corrosion in the drive motor and related electrical connections.
    Regular maintenance of hydraulic fluid and filters can also help prevent such issues.
  3. Hydraulic System Failures
    Hydraulic issues can manifest as unresponsive steering or lifting mechanisms. To troubleshoot:
    • Hydraulic Fluid: Check the fluid level and quality.
    • Hydraulic Valves: Inspect for blockages or malfunctions.
    • Pump Operation: Ensure the hydraulic pump is functioning correctly.
    • Cylinder Seals: Look for leaks that could cause loss of pressure.
    A user experienced a situation where the forklift's clutch pedal became inoperative due to a failure in the hydraulic assist system, highlighting the importance of regular hydraulic system maintenance.
Maintenance Tips
  • Regular Fluid Checks: Monitor engine oil, transmission fluid, and hydraulic fluid levels regularly.
  • Scheduled Inspections: Conduct periodic inspections of key components, including the engine, transmission, and hydraulic systems.
  • Proper Storage: Store the forklift in a dry, sheltered environment to prevent corrosion and damage.
  • Operator Training: Ensure operators are trained in proper forklift operation and maintenance practices.
Conclusion
The Hyster 50 series forklifts are robust machines designed for demanding material handling tasks. By understanding their specifications and common issues, operators and maintenance personnel can ensure optimal performance and longevity of these forklifts. Regular maintenance and prompt attention to potential problems are key to minimizing downtime and maximizing productivity.
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