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844K Wheel Dozer
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Learn more about the 844K Wheel Dozer
Product Specs
Engine
| Engine Model | C27 Cat® |
| Gross Power | 752 HP |
| Bore | 5.4 in |
| Stroke | 6 in |
| Displacement | 1649.5 in³ |
| Torque Rise | 18 % |
| Net Power - SAE J1349 - Standard Ambient | 699 HP |
| Net Power - SAE J1349 | 699 HP |
| Gross Power - ISO 14396 | 752 HP |
| Net Power - SAE J1349 - High Ambient | 648 HP |
| Peak Torque - Speed | 2624 lb/ft |
| Emissions | U.S. EPA Tier 4 Final or Tier 2 Equivalent |
| Rated Speed | 1800 r/min |
| Gross Power - SAE J1995 | 766 HP |
Weights
| Operating Weight | 165089 lb |
Transmission
| Converter Drive - Forward 1 | 4.5 mile/h |
| Converter Drive - Forward 2 | 8.3 mile/h |
| Converter Drive - Forward 3 | 14.2 mile/h |
| Converter Drive - Reverse 1 | 4.9 mile/h |
| Converter Drive - Reverse 2 | 9.1 mile/h |
| Converter Drive - Reverse 3 | 15.5 mile/h |
| Direct Drive - Forward 2 | 8.5 mile/h |
| Direct Drive - Forward 3 | 15.2 mile/h |
| Direct Drive - Reverse 1 | 5.4 mile/h |
| Direct Drive - Reverse 2 | 9.6 mile/h |
| Direct Drive - Reverse 3 | 16.4 mile/h |
| Transmission Type | Cat Planetary Power Shift |
| Direct Drive - Forward 1 | Lock-up disabled |
Service Refill Capacities
| Fuel Tank - Standard | 286.6 gal (US) |
| Cooling System | 54.9 gal (US) |
| Crankcase | 20 gal (US) |
| Transmission | 29.1 gal (US) |
| Differential - Final Drives - Front | 71.6 gal (US) |
| Differential - Final Drives - Rear | 68.9 gal (US) |
| Hydraulic System - Implement and Hydraulic Fan | 68.9 gal (US) |
| Hydraulic System - Steering and Braking | 34.9 gal (US) |
Cab
| Cab - ROPS/FOPS (1) | Cat cab with separate ROPS/FOPS is standard in North America, Europe and Japan. |
| Air Conditioning | Standard air conditioning system contains environmentally friendly R134a refrigerant |
| ROPS | ROPS meets SAE J11040 APR88, ISO 3471:2008 and ISO 3471:1994 criteria. |
| Cab - ROPS/FOPS (2) | SAE J11040 APR88, ISO 3471:2008, ISO 3471:1994 |
| FOPS | FOPS meets SAE J231 JAN81 and ISO 3449:1992 Level II criteria. |
Brakes
| Brakes | Meets ISO 3540:2011 |
Axles
| Front | Fixed |
| Rear | Trunnion |
| Oscillation Angle | 8.5 ° |
Blade
| Blade Capacity Range | 15,9-30,7 m3 (20,7-40,2 yd.3) |
Sound Performance - Standard
| Machine Sound Level (ISO 6395:2008) | 115 dB(A) |
| Operator Sound Level (ISO 6396:2008) | 69 dB(A) |
Sound Performance - Suppression
| Machine Sound Level (ISO 6395:2008) | 113 dB(A) |
| Operator Sound Level (ISO 6396:2008) | 69 dB(A) |
Hydraulic System - Lift/Tilt
| Relief Valve Setting - Tilt Cylinders (Small Pump) | 2920 psi |
| Output at 2,000 rpm and 6900 kPa (1,000 psi) | 82 gal/min |
| Cylinders, Double Acting - Lift, Bore and Stroke | 133 mm × 1535 mm (5.25 in × 60.4 in) |
| Relief Valve Setting - Bulldozer (Large Pump) | 2700 psi |
| Cylinder, Double Acting - Tilt and Tip, Bore and Stroke | 210 mm × 188 mm (8.25 in × 7.4 in) |
Hydraulic System - Steering
| Total Steering Angle | 35 ° |
| Steering System - Circuit | Pilot, load sensing |
| Minimum Turning Radius - Over Blade | 34 ft |
| Relief Valve Setting | 4500 psi |
| Steering System - Pump | Piston, variable displacement |
| Maximum Flow | 94.3 gal/min |
Dimensions (Approximate)
| Height - Top of Exhaust Pipe | 16.6 ft |
| Wheel Base | 15.1 ft |
| Length - With Blade on Ground | 36.5 ft |
| Centerline of Rear Axle to Edge of Bumper | 12.5 ft |
| Centerline of Front Axle to Hitch | 7.5 ft |
| Height - Top of ROPS | 17.2 ft |
| Ground Clearance | 2 ft |
| Height - Top of Hood | 12.7 ft |