CAT 844 Wheel Dozer


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 Details

Number Of Cylinders 12
Engine Make CAT
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 Specs

Operating Weight 155117.3 lb (70360 kg)
Fuel Tank 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.
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