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844K Wheel Dozer

844K Wheel Dozer

At a Glance

Engine Model
C27 Cat®
Gross Power
752 HP
Operating Weight
165089 lb
5.4 in
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Cat Wheel Dozers are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a lower cost per ton. Engineered for your demanding work in large dozing applications, the 844K Wheel Dozer is the largest in the Cat Wheel Dozer line and is an ideal match for large mining operations, power generating utilities, the general contracting industry and wherever mobility, versatility and compaction is needed.


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Engine Model C27 Cat®
Gross Power 752HP
Bore 5.4in
Stroke 6in
Displacement 1649.5in³
Torque Rise 18%
Emissions U.S. EPA Tier 4 Final or Tier 2 Equivalent
Gross Power - ISO 14396 752HP
Gross Power - SAE J1995 766HP
Net Power - SAE J1349 699HP
Net Power - SAE J1349 - High Ambient 648HP
Net Power - SAE J1349 - Standard Ambient 699HP
Peak Torque - Speed 2624lb/ft
Rated Speed 1800r/min


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Operating Weight 165089lb


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Converter Drive - Forward 1 4.5mile/h
Converter Drive - Forward 2 8.3mile/h
Converter Drive - Forward 3 14.2mile/h
Converter Drive - Reverse 1 4.9mile/h
Converter Drive - Reverse 2 9.1mile/h
Converter Drive - Reverse 3 15.5mile/h
Direct Drive - Forward 2 8.5mile/h
Direct Drive - Forward 3 15.2mile/h
Direct Drive - Reverse 1 5.4mile/h
Direct Drive - Reverse 2 9.6mile/h
Direct Drive - Reverse 3 16.4mile/h
Direct Drive - Forward 1 Lock-up disabled
Transmission Type Cat Planetary Power Shift

Service Refill Capacities

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Fuel Tank - Standard 286.6gal (US)
Cooling System 54.9gal (US)
Crankcase 20gal (US)
Transmission 29.1gal (US)
Differential - Final Drives - Front 71.6gal (US)
Differential - Final Drives - Rear 68.9gal (US)
Hydraulic System - Implement and Hydraulic Fan 68.9gal (US)
Hydraulic System - Steering and Braking 34.9gal (US)


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Front Fixed
Rear Trunnion
Oscillation Angle 8.5°


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Brakes Meets ISO 3540:2011


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Cab - ROPS/FOPS (1) Cat cab with separate ROPS/FOPS is standard in North America, Europe and Japan.
Cab - ROPS/FOPS (2) SAE J11040 APR88, ISO 3471:2008, ISO 3471:1994
Air Conditioning Standard air conditioning system contains environmentally friendly R134a refrigerant
FOPS FOPS meets SAE J231 JAN81 and ISO 3449:1992 Level II criteria.
ROPS ROPS meets SAE J11040 APR88, ISO 3471:2008 and ISO 3471:1994 criteria.

Hydraulic System - Lift/Tilt

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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) 82gal/min
Relief Valve Setting - Bulldozer (Large Pump) 2700psi
Relief Valve Setting - Tilt Cylinders (Small Pump) 2920psi
Cylinders, Double Acting - Lift, Bore and Stroke 133 mm × 1535 mm (5.25 in × 60.4 in)

Hydraulic System - Steering

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Minimum Turning Radius - Over Blade 34ft
Relief Valve Setting 4500psi
Maximum Flow 94.3gal/min
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Total Steering Angle 35°


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Blade Capacity Range 15,9-30,7 m3 (20,7-40,2 yd.3)

Sound Performance - Standard

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

Sound Performance - Suppression

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

Dimensions (Approximate)

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Centerline of Front Axle to Hitch 7.5ft
Centerline of Rear Axle to Edge of Bumper 12.5ft
Ground Clearance 2ft
Height - Top of Exhaust Pipe 16.6ft
Height - Top of Hood 12.7ft
Height - Top of ROPS 17.2ft
Length - With Blade on Ground 36.5ft
Wheel Base 15.1ft