Ford 3550 Loader Backhoe – Parts, Specs & Serial Number Guide

The Ford 3550 Loader Backhoe is a heavy-duty industrial tractor designed for excavation, loading, and utility work. Produced in the 1970s and early 1980s, the 3550 built upon the proven 3500 platform and offered enhanced hydraulics, a stronger rear axle, and an upgraded Ford 3-cylinder diesel engine. Known for its mechanical simplicity and reliability, the 3550 remains a popular machine with owners who value ease of maintenance and long-lasting construction.

Whether you're restoring an older unit or maintaining one in daily use, BrokenTractor.com carries all the essential parts including brake kits, seal kits, steering cylinders, and loader bushings.

Engine Specifications

• Engine Make: Ford Industrial

• Model: Ford 201 diesel

• Type: 3-cylinder, naturally aspirated diesel

• Horsepower: Approx. 50–55 hp

• Displacement: 201 cu in

• Fuel Tank Capacity: Approx. 17 gallons

• Cooling System: Liquid-cooled

Transmission

• Type: Manual or Select-O-Speed (optional)

• Gears: 4-speed or 8-speed manual, 10-speed Select-O-Speed

• Clutch: Dry single-disc (manual) or torque converter (Select-O-Speed)

• Drive Type: 2WD standard

Hydraulic System

• System Type: Open-center

• Pump Flow Rate: ~10–12 GPM

• System Pressure: Approx. 2,000 PSI

• Reservoir Location: Rear axle housing

• Key Parts: Ford 3550 Hydraulic Seal Kits

Dimensions & Performance

• Operating Weight: ~6,500–7,200 lbs

• Backhoe Max Dig Depth: Up to 14 feet (varies by attachment)

• Loader Bucket Width: 60–72 inches

• Lift Capacity: ~3,000 lbs

• Wheelbase: 80 inches

• Overall Length (with backhoe): ~18.5–19.5 ft

Maintenance Essentials

• Brakes: Dry drum brakes—adjust or replace linings and wheel cylinders → 3550 Brake Parts

• Power Steering: Common leak point—rebuild with steering cylinder kits

• Hydraulic Cylinders: Inspect loader and backhoe cylinders regularly for seal wear

• Pins & Bushings: Replace loose or worn joints to prevent frame damage → Pin & Bushing Kits

Common Issues & Fixes

• Loader Drift or Hydraulics Lagging: Often due to leaking cylinder seals or worn pump—flush system and reseal

• Brake Weakness: Caused by worn linings or master cylinder failure—rebuild kits available here

• Steering Slop or Fluid Loss: Rebuild leaking cylinders and check control valve

• Hard Shifting (Select-O-Speed): Low fluid or worn clutch packs—service or convert to manual if needed

Serial Number Location

Look for the serial number tag on the bell housing near the starter motor, or stamped near the rear of the engine block. This number is essential for verifying the year and correct parts.

Pro Tips

• Many 3550s share components with the Ford 3500 and 4500—verify part numbers when ordering

• Use high-quality hydraulic oil to reduce cavitation and improve loader response

• Grease loader arm and backhoe pivot points daily for best longevity
  → Browse All Ford 3550 Backhoe Parts at BrokenTractor