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Caterpillar 844H Wheel Dozer
Caterpillar 844H Wheel DozerEngineered for demanding work in large dozing applications, the Cat 844H Wheel Dozer is an ideal match for power generating utilities, clean up, road maintenance and production dozing at mines industry. |  |  | |||
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 | Overview & Specifications | |  | Features & Benefits | | | Standard Equipment | | | Optional Equipment | | | Work Tools & Attachments | ||
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| Engine | |
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| Engine Model | Cat® 27 ACERT™ |
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| Gross Power | 687 hp / 512 kW |
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| Flywheel Power | 627 hp / 468 kW |
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| Net Power | 627 hp / 468 kW |
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| Flywheel Power - Caterpillar | 627 hp / 468 kW |
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| Flywheel Power - EEC 80/1269 | 627 hp / 468 kW |
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| Flywheel Power - ISO 9249 | 627 hp / 468 kW |
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| Flywheel Power - SAE J1349 (JAN90) | 621 hp / 463 kW |
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| Flywheel Power - DIN 70020 | 650 PS |
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| Bore | 5.4 in / 137 mm |
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| Stroke | 6 in / 152 mm |
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| Displacement | 1666 in3 / 27.1 L |
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| Cylinders | 12 |
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| Torque Rise | 31 % / 31 % |
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| Weights | |
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| Operating Weight | 156120 lb / 70815 kg |
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| Transmission | |
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| Converter Drive - Forward 1 | 4.4 mph / 7 km/h |
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| Converter Drive - Forward 2 | 7.6 mph / 12.2 km/h |
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| Converter Drive - Forward 3 | 13 mph / 21 km/h |
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| Converter Drive - Reverse 1 | 4.8 mph / 7.7 km/h |
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| Converter Drive - Reverse 2 | 8.4 mph / 13.4 km/h |
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| Converter Drive - Reverse 3 | 14.3 mph / 23 km/h |
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| Direct Drive - Forward 1 | 4.5 mph / 7.2 km/h |
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| Direct Drive - Forward 2 | 7.9 mph / 12.8 km/h |
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| Direct Drive - Forward 3 | 14 mph / 22.5 km/h |
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| Direct Drive - Reverse 1 | 4.9 mph / 7.9 km/h |
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| Direct Drive - Reverse 2 | 8.8 mph / 14.1 km/h |
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| Direct Drive - Reverse 3 | 15.4 mph / 24.8 km/h |
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| Number of Forward Speeds | 3 |
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| Number of Reverse Speeds | 3 |
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| Hydraulic System | |
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| Output at 2040 rpm and 6900 kPa (1000 psi) | 82 gal/min / 311 L/min |
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| Cylinder, Double-Acting: Tilt and Tip, Bore and Stroke | 209.5 mm x 188 mm 8.25 in x 7.5 in |
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| Relief Valve Setting - Bulldozer (Large Pump) | 2700 psi / 18650 kPa |
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| Relief Valve Setting - Tilt Cylinders (Small Pump) | 2920 psi / 20150 kPa |
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| Steering | |
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| Minimum Turning Radius (Over Tires) | 390 in / 9910 mm |
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| Hydraulic ouput at 2040 rpm and 6900 kPa (1000 psi) | 93 gal/min / 353 L/min |
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| Relief Valve Setting | 5000 psi / 34500 kPa |
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| Steering Angle | 35 Degrees / 35 Degrees |
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| Service Refill Capacities | |
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| Fuel Tank - Standard | 268.4 gal / 1016 L |
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| Cooling System | 39.6 gal / 150 L |
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| Crankcase | 25 gal / 95 L |
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| Transmission | 29 gal / 110 L |
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| Hydraulic Tank | 189.4 gal / 717 L |
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| Differentials and Final Drives - Front | 71.6 gal / 271 L |
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| Differentials and Final Drives - Rear | 68.9 gal / 261 L |
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| Hydraulic System - Implement and Brakes (Tank Only) | 52 gal / 197 L |
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| Hydraulic System - Steering and Engine Cooling Fan (Tank Only) | 34.9 gal / 132 L |
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| Axles | |
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| Front | Fixed |
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| Rear | Oscillating ±11° |
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| Maximum Single-Wheel Rise and Fall | 22.5 in / 572 mm |
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| Operating Specifications | |
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| Blade Capacities | 15.9-30.7 m3 20.7-40.2 yd3 |
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| Ground Clearance | 1.56 ft / 475 mm |
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