Wheel Dozers:

844K Wheel Dozer

Engine Model
Cat® C27 ACERT™
Gross Power
752.0 hp
Operating Weight
165089.0 lb
Bore
5.4 in

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.



Product Specs

  • Engine

  • Engine Model
    Cat® C27 ACERT™
    Gross Power
    752.0hp
    Bore
    5.4in
    Stroke
    6.0in
    Displacement
    1649.5in3
    Torque Rise
    18.0%
    Emissions
    U.S. EPA Tier 4 Final or Tier 2 Equivalent
    Gross Power - ISO 14396
    752.0hp
    Gross Power - SAE J1995
    766.0hp
    Net Power - SAE J1349
    699.0hp
    Net Power - SAE J1349 (High Ambient)
    648.0hp
    Net Power - SAE J1349 (Standard Ambient)
    699.0hp
    Peak Torque @ (speed)
    2624.0lb ft
    Rated Speed
    1800.0RPM
    Engine Model
    Cat® C27 ACERT™
    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
  • Weights

  • Operating Weight
    165089.0lb
    Operating Weight
    165089lb
  • Transmission

  • Converter Drive - Forward 1
    4.5mph
    Converter Drive - Forward 2
    8.3mph
    Converter Drive - Forward 3
    14.2mph
    Converter Drive - Reverse 1
    4.9mph
    Converter Drive - Reverse 2
    9.1mph
    Converter Drive - Reverse 3
    15.5mph
    Direct Drive - Forward 2
    8.5mph
    Direct Drive - Forward 3
    15.2mph
    Direct Drive - Reverse 1
    5.4mph
    Direct Drive - Reverse 2
    9.6mph
    Direct Drive - Reverse 3
    16.4mph
    Direct Drive - Forward 1
    Lock-up disabled
    Transmission Type
    Cat Planetary Power Shift
    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
    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
  • Service Refill Capacities

  • Fuel Tank - Standard
    286.6gal
    Cooling System
    54.9gal
    Crankcase
    20.0gal
    Transmission
    29.1gal
    Differentials and Final Drives - Front
    71.6gal
    Differentials and Final Drives - Rear
    68.9gal
    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)
  • Axles

  • Front
    Fixed
    Rear
    Trunnion
    Oscillation Angle
    8.5Degrees
    Front
    Fixed
    Rear
    Trunnion
    Oscillation Angle
    8.5°
  • Brakes

  • Brakes
    Meets ISO 3540:2011
    Brakes
    Meets ISO 3540:2011
  • Cab

  • 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.
    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.
    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
  • Hydraulic System - Lift/Tilt

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

  • Machine Sound Level (ISO 6395:2008)
    113.0dB(A)
    Operator Sound Level (ISO 6396:2008)
    69.0dB(A)
    Machine Sound Level (ISO 6395:2008)
    113dB(A)
    Operator Sound Level (ISO 6396:2008)
    69dB(A)
  • Hydraulic System - Steering

  • Maximum Flow
    94.3gal/min
    Steering System - Circuit
    Pilot, load sensing
    Steering System - Pump
    Piston, variable displacement
    Total Steering Angle
    35.0Degrees
    Maximum Flow
    94.3gal/min
    Steering System - Circuit
    Pilot, load sensing
    Steering System - Pump
    Piston, variable displacement
    Total Steering Angle
    35°
    Minimum Turning Radius - Over Blade
    34ft
    Relief Valve Setting
    4500psi
  • Dimensions (Approximate)

  • Center Line of Front Axle to Hitch
    7.5ft
    Center Line of Rear Axle to Edge of Bumper
    12.5ft
    Ground Clearance
    2.0ft
    Height to Top of Exhaust Pipe
    16.6ft
    Height to Top of Hood
    12.7ft
    Height to Top of ROPS
    17.2ft
    Length with Blade on Ground
    36.5ft
    Wheelbase
    15.1ft
    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
  • Sound Performance - Standard

  • Machine Sound Level (ISO 6395:2008)
    115.0dB(A)
    Operator Sound Level (ISO 6396:2008)
    69.0dB(A)
    Machine Sound Level (ISO 6395:2008)
    115dB(A)
    Operator Sound Level (ISO 6396:2008)
    69dB(A)
  • Blade

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

Equipment

  • Operator Environment
    • Air conditioner and heater with automatic temperature control
    • Cab, sound-suppressed pressurized, protective structure (ROPS/FOPS), radio ready for (entertainment) includes antenna, speakers and converter (12V, 10-15 amp)
    • 12V power port for mobile phone or laptop connection
    • Camera, rear vision
    • Cigar lighter and ashtray
    • Coat hook
    • Electro-hydraulic blade controls (seat mounted)
    • Flip-up armrest
    • Heater and defroster
    • Horn, electric
    • Implement hydraulic lockout
    • Instrumentation, gauges: - Engine coolant temperature - Fuel level - Ground speed - Gear - Hydraulic oil temperature - Speedometer/tachometer - Torque converter temperature
    • Instrumentation, warning indicators: - Action alert system, three category - Automatic transmission model enable status - Brake malfunction - Bucket float status - Delayed engine shutdown status - Engine idle shutdown status - Engine malfunction - Fuel economy mode enable status - Hydraulic lockout - Lockup clutch enable status - Low fuel level - Parking brake status - Rimpull control enable status - Seatbelt warning - Secondary steering (if equipped) - Throttle lock status - Transmission gear
    • Keypad, control with indicator lights: - Auto trans mode speed range - Auto/manual transmission mode - Lockup clutch - Reduced rimpull - Throttle lock
    • Light, dome (cab)
    • Lunchbox and beverage holders
    • Mirrors, rearview (externally mounted)
    • Seat, Cat comfort (cloth) air suspension
    • Seat belt, retractable, 76 mm (3 in) wide
    • STIC control system with steering lock
    • Tinted glass
    • Trainer seat with lap belt
    • Vital Information Management System (VIMS) 3G with graphical information display: external data port, customizable operator profiles
    • Wet-arm wipers/washers (front, rear and corner) intermittent front wiper
  • Power Train
    • Brakes, full hydraulic, enclosed, oil-disc
    • Axle-shaft oil-disc service brake
    • Electro hydraulic parking brake
    • Case drain filters
    • Cat clean emission module (Tier 4 only)
    • Demand fan
    • Engine Cat C27 ACERT
    • Fuel priming pump (electric)
    • Ground level engine shutoff, bumper
    • Mufflers (under hood) (Tier 2 only)
    • Precleaner, engine air intake
    • Radiator, Aluminum Modular (AMR)
    • Separated cooling system
    • Starting aid, (ether) manual override
    • Throttle Lock
    • Torque Converter, Impeller Clutch with lock-up clutch feature and rimpull control system
    • Transmission, 534 mm (21 in) planetary power shift (electronic) (3F/3R)
  • Electrical
    • Alarm, back-up
    • Alternator, 150 amp
    • Batteries, maintenance free (2 - 1,400 CCA)
    • Converter, 10/15 amp, 24V to 12V
    • Deutsch component connectors
    • Electrical system, 24V
    • Electronic transmission control
    • Lighting system, halogen (front and rear) lighting, access stairway, engine compartment
    • Starter, electric
    • Starter lockout in bumper
    • Starting receptacle for emergency start
    • Transmission lockout in bumper
  • Other
    • Axle temperature sensor
    • Battery disconnect and jump start receptacle, bumper
    • Coupling, Caterpillar O-ring face seals
    • Economy mode with on demand throttle
    • Emergency platform egress
    • Engine, crankcase, 500 hour interval with CH4
    • Engine idle management features: - Auto idle kickdown - Delayed engine shutdown - Engine idle shutdown
    • Fenders, steel (front)
    • Guards, crankcase and power train
    • Grouped/labeled lube points
    • Hitch, drawbar with pin
    • Hoses, Cat XT
    • Oil sampling valves
    • Positive flow control hydraulic system
    • Product Link
    • Sight Gauges: hydraulic tanks, steering/fan and implement/brake, and transmission
    • Stairway, left and right rear access
    • Steering, load sensing
    • Steering, secondary
    • Toe kicks
    • Vandalism protection caplocks
    • Venturi stack
    • Premixed 50% concentration of extended life coolant with freeze protection to -34° C (-29° F)
  • Power Train
    • 50° C (-58° F) antifreeze
    • Engine oil change system, high speed, Wiggins
    • Engine block heater 120V or 240V
    • High ambient cooling - software
  • Blades
    • Semi-U - 17.8 m3 (23.3 yd3)
    • HD Semi-U - 16.1 m3 (21.1 yd3)
    • Coal - 30.7 m3 (40.2 yd3)
  • Operator Environment
    • Cab precleaner
    • AM/FM/CD/MP3 radio
    • Satellite Sirius radio with Bluetooth
    • LED warning strobe
    • CB radio ready
    • Window sun shade
  • Miscellaneous Attachments
    • Front and rear roading fenders
    • Fast fill fuel system (Shaw-Aero)
    • Axle oscillation stop
    • Paint, black blade rear

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