Serial Number Information
The serial number plate is typically located on the left frame rail, below the cab or near the rear engine compartment. Serial number ranges help identify blade type, emission tier, and transmission variant.
Key Specifications
| Feature |
Specification |
| Engine Model |
Komatsu SAA6D140E-5, 6-cylinder turbocharged diesel |
| Displacement |
15.24L (930 cu in) |
| Net Power |
354 HP (264 kW) |
| Torque |
1,350 lb-ft @ 1,500 RPM |
| Fuel Tank Capacity |
150 gallons (567.8 liters) |
| Operating Weight |
87,100 lbs (39,500 kg) |
Transmission
| Feature |
Specification |
| Type |
Torque converter with planetary gear |
| Gears |
3 forward, 3 reverse |
| Max Forward Speed |
6.8 mph (10.9 km/h) |
| Max Reverse Speed |
8.6 mph (13.8 km/h) |
Blade Options & Dimensions
| Blade Type |
Capacity |
Width |
Height |
| Semi-U Blade |
13.1 yd³ |
14.4 ft (4.39 m) |
5.9 ft (1.8 m) |
| Full-U Blade |
16.6 yd³ |
14.4 ft (4.39 m) |
5.9 ft (1.8 m) |
Undercarriage & Ground Pressure
| Feature |
Specification |
| Track Gauge |
7.2 ft (2.19 m) |
| Shoe Width |
24 in (610 mm) |
| Ground Clearance |
1.5 ft (460 mm) |
| Ground Pressure |
12.6 psi (87 kPa) |
Key Features
Heavy-Duty Powertrain
Powered by the robust Komatsu SAA6D140E-5 engine, this machine delivers 354 HP and 1,350 lb-ft of torque, ensuring unmatched dozing capability in demanding terrain.
Torque Converter Transmission
The 3-speed forward/reverse planetary gear transmission paired with a torque converter ensures efficient torque delivery and smooth speed transitions under load.
High-Capacity Blades
Choose between 13.1 yd³ Semi-U and 16.6 yd³ Full-U blades for bulk earthmoving or fine grading versatility.
Stability & Traction
With 24-inch wide shoes, a 7.2 ft track gauge, and low ground pressure, the D155 maintains strong traction while minimizing terrain disruption.
Common Replacement Parts
Maintain your D155 with rugged components available at Broken Tractor:
Engine Components
Air filters, fuel injectors, pistons, turbochargers, head gaskets
Transmission & Powertrain
Torque converters, clutch packs, seals, planetary gear sets
Hydraulics
Blade tilt and lift cylinders, hydraulic control valves, hoses
Undercarriage Parts
Track shoes, idlers, carrier rollers, bottom rollers, sprockets
Electrical System
Starter motors, alternators, ignition switches, cab wiring harnesses
Maintenance Schedule
| Task |
Recommended Interval |
| Engine Oil & Filter |
Every 250 hours |
| Transmission & Hydraulic Fluids |
Every 500 hours |
| Fuel Filter Replacement |
Every 250 hours |
| Track Tension Check |
Weekly or every 50 hours |
| Blade & Undercarriage Inspection |
Every 100 hours |
| Cooling System Service |
Annually or every 1,000 hours |
