Serial Number Information
The serial number plate is typically located on the left side of the main frame, behind the front blade lift cylinder or near the operator cab step.
Provide your serial number to ensure accurate ordering for hydraulic, electrical, or intelligent control components.
Key Specifications
| Feature |
Specification |
| Engine |
Komatsu SAA4D107E-3, 4-cylinder turbocharged diesel |
| Emissions Tier |
Tier 4 Final compliant |
| Net Power |
130 HP (97 kW) @ 2,200 RPM |
| Operating Weight |
30,867 lbs (14,000 kg) |
| Transmission |
Hydrostatic, variable speed |
Blade & Undercarriage
| Feature |
Specification |
| Blade Capacity |
3.5 cubic yards (2.68 m³) |
| Track Width |
34 in (860 mm) |
| Ground Pressure |
4.47 psi |
Travel Speeds
| Direction |
Speed |
| Forward |
5.5 mph (8.9 km/h) |
| Reverse |
5.5 mph (8.9 km/h) |
Key Features
Intelligent Machine Control (IMC)
The D51PXi integrates factory-installed GPS grade control, allowing fully automatic blade adjustments and increased accuracy for finish grading.
Efficient Hydrostatic Transmission
The variable-speed hydrostatic drive ensures smooth transitions, infinite speed control, and responsive operation—ideal for fine grading and slope work.
Low Ground Pressure Design
With 34-inch wide tracks and only 4.47 psi ground pressure, the D51PXi excels in soft or sensitive terrain with minimal surface disruption.
Komatsu-Tuned Tier 4 Final Engine
The 130 HP SAA4D107E-3 engine offers clean emissions, reduced fuel use, and responsive power delivery for mid-size dozing tasks.
Common Replacement Parts
Support your Komatsu D51PXi with trusted components available at Broken Tractor:
Engine Components
Turbochargers, fuel injectors, oil filters, DEF systems, air filters
Hydraulics
Lift and tilt cylinders, control valves, hoses, hydrostatic pump
Undercarriage
Track chains, 34" shoes, idlers, sprockets, carrier rollers
Electrical & IMC System
GPS antennas, monitor displays, control modules, wiring harnesses
Cab Components
Joysticks, operator seat kits, A/C units, diagnostic panel replacements
Maintenance Schedule
| Task |
Recommended Interval |
| Engine Oil & Filter |
Every 250 hours |
| Fuel & DEF Filter Change |
Every 250–500 hours |
| Hydraulic Filter & Oil |
Every 500 hours |
| IMC System Calibration |
Every 1,000 hours or as needed |
| Track Tension Check |
Weekly |
| Cooling System Flush |
Annually or every 1,000 hours |
