John Deere 590 Log Skidder – Specs, Parts & Serial Number Guide

Description:

Key Specifications:

• Operating Weight: 24,500 lbs (11,113 kg)

• Manufacturing Years: Late 1970s – Early 1980s

• Engine: John Deere 6466T, 6-cylinder turbocharged diesel

• Displacement: 6.6L (466 cubic inches)

• Net Power: 140 HP (104 kW)

• Torque: 405 lb-ft at 1,400 RPM

• Fuel Tank Capacity: 50 gallons (189 liters)

• Transmission:

  • Type: Powershift
  • Gears: 4 forward, 4 reverse
  • Max Forward Speed: 17 mph (27 km/h)

• Hydraulics:

  • System Flow: 30 GPM (113 LPM)
  • Operating Pressure: 2,500 psi (172 bar)

• Winch Type: John Deere 4000 Series

• Winch Pulling Capacity: Approx. 35,000 lbs (15,876 kg)

• Tires:

  • Front & Rear: 23.1-26 forestry tires

Serial Number Guide (Location & Ranges):

• Location: Stamped on the frame near the left side of the engine
• Example Serial Ranges:
  • 590A (1979): Starts at 1001
  • 590B (1981): Starts at 2001

Common Replacement Parts:

• Engine: Air filters, fuel injectors, turbo, pistons
• Transmission: Clutch packs, torque converter, seals
• Hydraulics: Winch motor, hoses, control valves, cylinders
• Brakes: Disc brakes, master cylinder, brake lines
• Axles & Drivetrain: Differentials, bearings, U-joints