Cat Wheel Dozers are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a lower cost per ton. Engineered for your demanding work in large dozing applications, the 844 Wheel Dozer is the largest in the Cat Wheel Dozer line and is an ideal match for large mining operations, power generating utilities, the general contracting industry and wherever mobility, versatility and compaction is needed.
| Engine Model | C27 Cat® |
| Rated Speed | 1800r/min |
| Gross Power - ISO 14396 | 752HP |
| Gross Power - SAE J1995 | 766HP |
| Net Power - SAE J1349 - Standard Ambient | 699HP |
| Net Power - SAE J1349 - High Ambient | 648HP |
| Bore | 5.4in |
| Stroke | 6in |
| Displacement | 1649.5in³ |
| Peak Torque - Speed | 2624lb/ft |
| Torque Rise | 18% |
| Emissions | U.S. EPA Tier 4 Final and EU Stage V or China Nonroad Stage III Emissions standards, equivalent to U.S. EPA Tier 2 |
| Operating Weight | 165089lb |
| Blade Capacities | 15.9 - 30.7 m3 (20.7 - 40.2 yd3) |
| Transmission Type | Cat Planetary Power Shift |
| Converter Drive - Forward 1 | 4.5mile/h |
| Converter Drive - Forward 2 | 8.3mile/h |
| Converter Drive - Forward 3 | 14.2mile/h |
| Converter Drive - Reverse 1 | 4.9mile/h |
| Converter Drive - Reverse 2 | 9.1mile/h |
| Converter Drive - Reverse 3 | 15.5mile/h |
| Direct Drive - Forward 1 | Lock-up disabled |
| Direct Drive - Forward 2 | 8.5mile/h |
| Direct Drive - Forward 3 | 15.2mile/h |
| Direct Drive - Reverse 1 | 5.4mile/h |
| Direct Drive - Reverse 2 | 9.6mile/h |
| Direct Drive - Reverse 3 | 16.4mile/h |
| Output at 2,000 rpm and 6900 kPa (1,000 psi) | 82gal/min |
| Cylinders, Double Acting - Lift, Bore and Stroke | 133 mm × 1535 mm (5.25 in × 60.4 in) |
| Cylinder, Double Acting - Tilt and Tip, Bore and Stroke | 210 mm × 188 mm (8.25 in × 7.4 in) |
| Relief Valve Setting - Bulldozer (Large Pump) | 2700psi |
| Relief Valve Setting - Tilt Cylinders (Small Pump) | 2920psi |
| Steering System - Circuit | Pilot, load sensing |
| Steering System - Pump | Piston, variable displacement |
| Minimum Turning Radius - Over Blade | 34ft |
| Total Steering Angle | 35° |
| Maximum Flow | 94.3gal/min |
| Relief Valve Setting | 4500psi |
| Fuel Tank - Standard | 286.6gal (US) |
| Cooling System | 54.9gal (US) |
| Crankcase | 20gal (US) |
| Transmission | 29.1gal (US) |
| Differential - Final Drives - Front | 71.6gal (US) |
| Differential - Final Drives - Rear | 68.9gal (US) |
| Hydraulic System - Implement and Hydraulic Fan | 68.9gal (US) |
| Hydraulic System - Steering and Braking | 34.9gal (US) |
| Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes. |
| Front | Fixed |
| Rear | Trunnion |
| Oscillation Angle | 8.5° |
| Brakes | Meets ISO 3540:2011 |
| Operator Sound Level (ISO 6396:2008) | 69dB(A) |
| Machine Sound Level (ISO 6395:2008) | 115dB(A) |
| Operator Sound Level (ISO 6396:2008) | 69dB(A) |
| Machine Sound Level (ISO 6395:2008) | 113dB(A) |
| ROPS/FOPS | ISO 3471:2008 and ISO 3449:2005 Level II Standards |
| Height - Top of ROPS | 17.2ft |
| Height - Top of Exhaust Pipe | 16.6ft |
| Height - Top of Hood | 12.7ft |
| Ground Clearance | 2ft |
| Centerline of Front Axle to Hitch | 7.5ft |
| Centerline of Rear Axle to Edge of Bumper | 12.5ft |
| Wheel Base | 15.1ft |
| Length - With Blade on Ground | 36.5ft |
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