Caterpillar 844
Browse All Caterpillar or Wheel Dozer Models
Contents:
Dimensions
| Length With Blade On Ground | 35.9 ft in (10940 mm) |
| Width Over Tires | 14.34 ft in (4370 mm) |
| Ground Clearance | 1.42 ft in (431 mm) |
| Height To Top Of Cab | 16.48 ft in (5023 mm) |
| Wheelbase | 15.1 ft in (4600 mm) |
Operating Specifications
| Ground Clearance | 1.56 ft in (0.48 m) |
| Blade Capacities | 15.9 to 30.7 m3 20.7 to 40.2 yd3 |
Engine
| Number Of Cylinders | 12 |
| Engine Make | 2236 |
| Engine Model | 3142E DITA ATAAC |
| Net Power | 620 hp (462.4 kw) |
| Power Measured @ | 2000 rpm |
| Displacement | 1647.7 cu in (27 L) |
| Bore | 5.4 in (137.2 mm) |
| Stroke | 6 in (152.4 mm) |
| Engine Model | Cat 3412E |
| Flywheel Power | 620 hp (462.4 kw) |
| Flywheel Power - Din 70020 | 648 PS |
| Flywheel Power - Caterpillar | 625 hp (466.1 kw) |
| Flywheel Power - Eec 80/1269 | 625 hp (466.1 kw) |
| Flywheel Power - Iso 9249 | 625 hp (466.1 kw) |
| Flywheel Power - Sae J1349 (Jan90) | 618 hp (460.9 kw) |
Operational
| Operating Weight | 155117.3 lb (70360 kg) |
| Fuel Capacity | 212.2 gal (803 L) |
| Tire Size | 45/65-R39 PR |
Transmission
| Number Of Forward Gears | 3 |
| Number Of Reverse Gears | 3 |
| Max Speed - Forward | 13.1 mph (21 km/h) |
| Max Speed - Reverse | 14.3 mph (23 km/h) |
Steering
| Steering Angle | 35 degrees |
Transmission
| Direct Drive - Forward 3 | 14 mph (22.6 km/h) |
| Direct Drive - Reverse 3 | 15.4 mph (24.8 km/h) |
| Direct Drive - Forward 2 | 7.9 mph (12.8 km/h) |
| Direct Drive - Reverse 2 | 8.8 mph (14.2 km/h) |
| Converter Drive - Forward 3 | 13 mph (21 km/h) |
| Converter Drive - Reverse 3 | 14.3 mph (23.1 km/h) |
| Direct Drive - Forward 1 | 4.5 mile/h |
| Converter Drive - Forward 1 | 4.4 mph (7.1 km/h) |
| Converter Drive - Forward 2 | 7.6 mph (12.3 km/h) |
| Direct Drive - Reverse 1 | 4.9 mph (7.9 km/h) |
| Converter Drive - Reverse 1 | 4.8 mph (7.8 km/h) |
| Converter Drive - Reverse 2 | 8.4 mph (13.6 km/h) |
Steering
| Relief Valve Setting | 4500 psi |
| Minimum Turning Radius - Over Tires | 390 in (9906 mm) |
Transmission
| Number Of Forward Speeds | 3 |
| Number Of Reverse Speeds | 3 |
Steering
| Hydraulic Output At 2128 Rpm And 1000 Psi (6900 Kpa) | 108 gal/min |
Weights
| Operating Weight | 156120 lb (70814.9 kg) |
Tires
| Standard Tire Size | Two choices available. |
| Tire Choices | Two choices available. |
Blade
| Blade Capacity | 20.8 yd3 (15.9 m3) |
| Blade Width | 17.8 ft in (5420 mm) |
| Blade Height | 6.1 ft in (1834 mm) |
Axles
| Front | Fixed |
| Rear | Oscillating 11 degrees |
| Maximum Single-Wheel Rise And Fall | 22.5 in (571.5 mm) |
Hydraulic System
| Cylinder, Double Acting - Tilt And Tip, Bore And Stroke | 209.5 mm x 188 mm 8.25 in x 7.5 in |
| Output At 2,126 Rpm And 6894 Kpa (1,000 Psi) | 89 gal/min |
| Relief Valve Setting - Bulldozer (Large Pump) | 2700 psi |
| Relief Valve Setting - Tilt Cylinders (Small Pump) | 2920 psi |
Brakes
| Brakes | Meets SAE/ISO 3450 1996. |
Service Refill Capacities
| Cooling System | 50.2 gal (190.1 L) |
| Crankcase | 25 gal (94.7 L) |
| Hydraulic Tank | 141 gal (533.8 L) |
| Fuel Tank - Standard | 260 gal (984.3 L) |
| Transmission | 29 gal (109.8 L) |
| Differential - Final Drives - Front | 71.6 gal (271.1 L) |
| Differential - Final Drives - Rear | 68.9 gal (260.9 L) |
| Hydraulic System - Implement And Brakes - Tank Only | 45 gal (170.4 L) |
| Hydraulic System - Steering And Engine Cooling Fan - Tank Only | 34.9 gal (132.2 L) |
Cab
| Rops/Fops | Meets SAE and ISO standards. |
| Sound Performance Levels | Meets ANSI, SAE and ISO standards. |
