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844K Wheel Dozer

  • OVERVIEW
  • SPECIFICATIONS
  • STANDARD / OPTIONAL
PRODUCT DESCRIPTION

Cat Large 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.

Engine
  • Engine Model - Cat® C27 ACERT™
  • Gross Power - 752 mm H2O
  • Bore - 5.4 in
  • Stroke - 6 in
  • Displacement - 1649.5 in³
  • Torque Rise - 18 %
  • Emissions - U.S. EPA Tier 4 Final or Tier 2 Equivalent
  • Gross Power - ISO 14396 - 752 mm H2O
  • Gross Power - SAE J1995 - 766 mm H2O
  • Net Power - SAE J1349 - 699 mm H2O
  • Net Power - SAE J1349 - High Ambient - 648 mm H2O
  • Net Power - SAE J1349 - Standard Ambient - 699 mm H2O
  • Peak Torque - Speed - 2624 lb/ft
  • Rated Speed - 1800 r/min
  • Weights
  • Operating Weight - 165089 lb
  • Transmission
  • Converter Drive - Forward 1 - 4.5 mile/h
  • Converter Drive - Forward 2 - 8.3 mile/h
  • Converter Drive - Forward 3 - 14.2 mile/h
  • Converter Drive - Reverse 1 - 4.9 mile/h
  • Converter Drive - Reverse 2 - 9.1 mile/h
  • Converter Drive - Reverse 3 - 15.5 mile/h
  • Direct Drive - Forward 2 - 8.5 mile/h
  • Direct Drive - Forward 3 - 15.2 mile/h
  • Direct Drive - Reverse 1 - 5.4 mile/h
  • Direct Drive - Reverse 2 - 9.6 mile/h
  • Direct Drive - Reverse 3 - 16.4 mile/h
  • Direct Drive - Forward 1 - Lock-up disabled
  • Transmission Type - Cat Planetary Power Shift
  • Service Refill Capacities
  • Fuel Tank - Standard - 286.6 gal (US)
  • Cooling System - 54.9 gal (US)
  • Crankcase - 20 gal (US)
  • Transmission - 29.1 gal (US)
  • Differential - Final Drives - Front - 71.6 gal (US)
  • Differential - Final Drives - Rear - 68.9 gal (US)
  • Hydraulic System - Implement and Hydraulic Fan - 68.9 gal (US)
  • Hydraulic System - Steering and Braking - 34.9 gal (US)
  • Cab
  • Air Conditioning - Standard air conditioning system contains environmentally friendly R134a refrigerant
  • 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
  • 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.
  • Brakes
  • Brakes - Meets ISO 3540:2011
  • Axles
  • Front - Fixed
  • Rear - Trunnion
  • Oscillation Angle - 8.5 °
  • Blade
  • Blade Capacity Range - 15.9-30.7 m3 (20.7-40.2 yd3)
  • Sound Performance - Standard
  • Machine Sound Level (ISO 6395:2008) - 115 dB(A)
  • Operator Sound Level - ISO 6396:2008 - 69 dB(A)
  • Sound Performance - Suppression
  • Machine Sound Level (ISO 6395:2008) - 113 dB(A)
  • Operator Sound Level - ISO 6396:2008 - 69 dB(A)
  • Hydraulic System - Lift/Tilt
  • Cylinder, Double Acting - Tilt and Tip, Bore and Stroke - 210 mm × 188 mm (8.25 in × 7.4 in)
  • Cylinders, Double Acting - Lift, Bore and Stroke - 133 mm × 1535 mm (5.25 in × 60.4 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
  • Maximum Flow - 94.3 gal/min
  • Minimum Turning Radius - Over Blade - 34 ft
  • Relief Valve Setting - 4500 psi
  • Steering System - Circuit - Pilot, load sensing
  • Steering System - Pump - Piston, variable displacement
  • Total Steering Angle - 35 °
  • Dimensions (Approximate)
  • Centerline of Front Axle to Hitch - 7.5 ft
  • Centerline of Rear Axle to Edge of Bumper - 12.5 ft
  • Ground Clearance - 2 ft
  • Height - Top of Exhaust Pipe - 16.6 ft
  • Height - Top of Hood - 12.7 ft
  • Height - Top of ROPS - 17.2 ft
  • Length - With Blade on Ground - 36.5 ft
  • Wheel Base - 15.1 ft
  • Standard Equipment
  • OPERATOR ENVIRONMENT
  • POWER TRAIN
  • ELECTRICAL
  • OTHER
  • Optional Equipment
  • POWER TRAIN
  • BLADES
  • OPERATOR ENVIRONMENT
  • MISCELLANEOUS ATTACHMENTS