Case 580K Backhoe

Description:

The Case 580K Backhoe Loader continues the legacy of rugged, versatile Case machines, offering dependable performance with its Cummins 4B diesel engine, upgraded loader specs, and smooth transmission. Produced from 1986 through 1991, the 580K underwent multiple phases of development—most notably with a major transmission change in Phase III, so serial number verification is essential when ordering parts.

Known for excellent digging power, decent transport speed (24 mph max), and user-friendly controls, the 580K is ideal for construction, farm, and municipal work. With widespread parts availability, it remains a top pick among vintage backhoes.

Case 580K Serial Numbers by Year:

• 1986: #17417801 – 17417849

• 1987: #17417850 – JJG0006900

• 1988: #JJG0007000 – JJG0013655

• 1989: #JJG0013656 – JJG0022284

• 1990: #JJG0022285 – JJG0030517

• 1991+: After #JJG0030518

Phase I vs. Phase III Identification (Important for Parts!):

• Phase I: Before #JJG0020000

  • Separate Power Shuttle and 4-speed transmission

• Phase III: After #JJG0020000

  • Integrated 4-speed transaxle with Forward-Reverse

Pro Tip: The rear axle and transmission parts are NOT interchangeable between Phase I and Phase III—double-check your serial number before ordering!

Operating Weight (Approximate):

• 13,426 lbs (6,090 kg) for 2WD models
• 13,912 lbs (6,310 kg) for 4WD models.

⚙️ Engine & Fuel System:

• Engine:

  • Cummins 4B, 390 cu in (6.4L)

  • Naturally Aspirated, Non-Turbo

  • 62 Horsepower

• Fuel System:

  • Rotary CAV Fuel Injection Pump

  • Service Tip: Regular fuel and oil filter changes are critical to avoid pump failure.

Loader Specifications:

• Bucket Capacity: 1.25 cubic yards

• Max Loading Height: 11.3 ft

• Common Issue: Pin and bushing wear leads to "sloppy" loader movement.

Backhoe Specifications:

• Standard Bucket Size: 24" (0.25 cubic yards)

• Max Digging Depth: 14.3 ft

⚡ Transmission Details:

• Max Speed: 24 mph

• Phase I: Separate Power Shuttle + 4-Speed Gearbox

• Phase III: Integrated 4-Speed Transaxle with Fwd/Rev
  Serial Number Specific Transmission Rebuild Kits