John Deere 550 P-Tier Dozer – Next-Gen Mid-Size Crawler

Description:

The John Deere 550 P-Tier Dozer is a modern, mid-size crawler built for power, precision, and tech-driven efficiency. Featuring an EPA Final Tier 4 PowerTech™ 4.5L diesel engine, SmartGrade™ 3D control options, and a smooth hydrostatic transmission, the 550 P-Tier is ideal for fine grading, slope work, and site prep with minimal rework.

Key Specifications:

• Engine:
  John Deere PowerTech™ PWS 4.5L, Final Tier 4 diesel

• Horsepower:
  ~92 HP (net)

• Transmission:
  Dual-path Hydrostatic (HST)

• Hydraulics:
  Load-sensing, ~18 GPM

• Operating Weight:
  ~19,000 – 21,000 lbs (standard vs. LGP)

• Blade Type:
  6-Way PAT (standard)

• Blade Capacity:
  Up to 2.4 cubic yards

• Undercarriage:
  SALT (Sealed and Lubricated Track), standard or LGP options

• Grade Control:
  SmartGrade™ 3D, slope control, and Topcon/Trimble compatibility

Serial Number Info:

• Production Start: Early 2020s

• Serial Number Location:
  Left side of the mainframe or inside the cab doorpost — always verify before ordering parts.

Key Features:

• ✅ Tier 4 Final Engine:
  No DPF — efficient, low-maintenance, emissions-compliant design.

• ✅ SmartGrade™ Technology:
  Integrated 2D/3D grade control reduces passes and rework.

• ✅ Hydrostatic Transmission:
  Twin-path HST provides precise speed control, strong hill-climb, and smooth operation.

• ✅ Operator Comfort:
  Quiet ROPS cab, ergonomic joystick controls, adjustable seat, and touchscreen display.

• ✅ Easy Maintenance Access:
  Swing-out coolers, grouped service ports, and remote diagnostics via JDLink™.

Common Replacement Parts:

Available from Broken Tractor

• Engine: Filters, turbochargers, water pumps, sensor kits

• Transmission (HST): Pumps, motors, pressure relief valves, control units

• Hydraulics: Lift cylinders, seal kits, hoses, joystick controls

• Blade Assembly: Pins, bushings, tilt cylinders, cutting edges

• Undercarriage: Track chains, rollers, sprockets, idlers, LGP shoes

• Electronics: Monitors, grade sensors, wiring harnesses

Maintenance Schedule:

• Engine Oil & Filter: Every 250 hours

• Fuel Filters: Every 250 hours

• Hydraulic/HST Fluids: Every 500 hours

• Cooling System: Flush every 1,000 hours

• Grease Points (Blade & Undercarriage): Weekly

• JDLink Diagnostics & Alerts: Daily or as needed

Common Issues & Solutions:

• Blade Drift or Weak Lift:
  Replace worn seals or valve spools — use hydraulic seal kits

• HST Lag or Performance Drop:
  Inspect hydrostatic motor or pump — HST components available

• Grade Control Faults:
  Often due to miscalibrated sensors or broken wiring — check connections and replace SmartGrade components

• Track Noise or Misalignment:
  Caused by worn rollers or loose chains — rebuild with undercarriage kits