CAT 844K Wheel Dozer

Dimensions (Approximate)

Ground Clearance 2 ft in (0.61 m)
Centerline Of Rear Axle To Edge Of Bumper 12.5 ft in (3.81 m)
Height – Top Of Exhaust Pipe 16.61 ft in (5.06 m)
Height – Top Of Hood 12.7 ft in (3.88 m)
Height – Top Of Rops 17.2 ft in (5.25 m)
Length – With Blade On Ground 36.5 ft in (11.13 m)
Centerline Of Front Axle To Hitch 7.5 ft in (2.29 m)
Wheel Base 15.1 ft in (4.61 m)

Engine Details

Gross Power 752 hp (560.8 kw)
Rated Speed 1800 rpm
Torque Rise 18 %
Displacement 1649.5 cu in (27.1 L)
Bore 5.4 in (137.2 mm)
Stroke 6 in (152.4 mm)
Emissions U.S. EPA Tier 4 Final or Tier 2 Equivalent
Net Power – Sae J1349 699 hp (521.3 kw)
Gross Power – Sae J1995 766 hp (571.3 kw)
Engine Model Cat C27 ACERT
Peak Torque – Speed 2624 rpm
Gross Power – Iso 14396 752 hp (560.8 kw)
Net Power – Sae J1349 – Standard Ambient 699 hp (521.3 kw)
Net Power – Sae J1349 – High Ambient 648 hp (483.3 kw)

Operational Specs

Operating Weight 165089 lb (74883.2 kg)

Transmission

Transmission Type Cat Planetary Power Shift
Direct Drive – Forward 3 15.2 mph (24.5 km/h)
Direct Drive – Reverse 3 16.4 mph (26.4 km/h)
Direct Drive – Forward 2 8.5 mph (13.7 km/h)
Direct Drive – Reverse 2 9.6 mph (15.5 km/h)
Converter Drive – Forward 3 14.2 mph (22.9 km/h)
Converter Drive – Reverse 3 15.5 mph (25 km/h)
Direct Drive – Forward 1 Lock-up disabled
Converter Drive – Forward 1 4.5 mph (7.3 km/h)
Converter Drive – Forward 2 8.3 mph (13.4 km/h)
Direct Drive – Reverse 1 5.4 mph (8.7 km/h)
Converter Drive – Reverse 1 4.9 mph (7.9 km/h)
Converter Drive – Reverse 2 9.1 mph (14.7 km/h)

Axles

Front Fixed
Rear Trunnion
Oscillation Angle 8.5 degrees

Blade

Blade Capacity Range 15.9-30.7 m3 (20.7-40.2 yd3)

Brakes

Brakes Meets ISO 3540:2011

Service Refill Capacities

Cooling System 54.9 gal (207.9 L)
Crankcase 20 gal (75.8 L)
Fuel Tank – Standard 286.6 gal (1084.9 L)
Transmission 29.1 gal (110.2 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 Hydraulic Fan 68.9 gal (260.9 L)
Hydraulic System – Steering And Braking 34.9 gal (132.2 L)

Hydraulic System – Lift/Tilt

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)
Output At 2,000 Rpm And 6900 Kpa (1,000 Psi) 82 gal/min
Relief Valve Setting – Bulldozer (Large Pump) 2700 psi
Relief Valve Setting – Tilt Cylinders (Small Pump) 2920 psi

Hydraulic System – Steering

Steering System – Circuit Pilot, load sensing
Steering System – Pump Piston, variable displacement
Total Steering Angle 35 degrees
Maximum Flow 94.3 gal/min
Minimum Turning Radius – Over Blade 34 ft in (10.4 m)
Relief Valve Setting 4500 psi

Cab

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.
Fops FOPS meets SAE J231 JAN81 and ISO 3449:1992 Level II criteria.
Cab – Rops/Fops (2) SAE J11040 APR88, ISO 3471:2008, ISO 3471:1994
Cab – Rops/Fops (1) Cat cab with separate ROPS/FOPS is standard in North America, Europe and Japan.

Sound Performance – Standard

Machine Sound Level (Iso 6395:2008) 115 dB(A)
Operator Sound Level (Iso 6396:2008) 69 dB(A)

Sound Performance – Suppression

Operator Sound Level (Iso 6396:2008) 69 dB(A)
Machine Sound Level (Iso 6395:2008) 113 dB(A)
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