New CAT Equipment

844 Wheel Dozer

Mobile. Agile. Versatile.

Maximize productivity in mining applications with the Cat® 844 Wheel Dozer, designed with efficiency in mind. Enhanced maintenance capabilities and simplified serviceability make for a long lifecycle, low owning and operating costs, and more uptime. Move more material with a machine built for the toughest conditions.

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    Benefits

    IMPROVED EFFICIENCY

    Lock-up torque converter, combined with an on-demand cooling fan and advanced engine idle management, delivers a more smooth shift

    ENHANCED MAINTENANCE

    Service access is conveniently located, helping to reduce maintenance time

    ADDITIONAL SAFETY

    Grouped, ground level engine and machine controls allow for safe and easy daily maintenance
    • Air Conditioning System
      Air Conditioning
      The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. - If equipped with R134a (Global Warming Potential = 1430), the system contains 1.8 kg (3.9 lb) of refrigerant, which has a CO2 equivalent of 2.574 metric tonnes (2.837 tons).
    • Axles
      Front
      Fixed
      Oscillation Angle
      8.5 °
      Rear
      Trunnion
    • Brakes
      Brakes
      Meets ISO 3540:2011
    • Cab
      ROPS/FOPS
      ISO 3471:2008 and ISO 3449:2005 Level II Standards
    • 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
    • Engine
      Bore
      5.4 in
      Displacement
      1649.5 in³
      Emissions
      Option 1 - U.S. EPA Tier 4 Final / EU Stage V
      Engine Model
      Cat® C27
      Engine Power - ISO 14396: 2002
      752 hp
      Engine Power - ISO 14396:2002
      786 hp
      Gross Power - SAE J1995:2014
      801 hp
      Net Power - SAE J1349:2011 - High Ambient
      681 hp
      Net Power - SAE J1349:2011 - Standard Ambient
      732 hp
      Note
      Net power advertised is the power available at the flywheel when the engine is equipped with fan at minimum speed, air intake system, exhaust system, and alternator.
      Peak Torque - Speed
      2624 lb/ft
      Rated Speed
      1800 r/min
      Stroke
      6 in
      Torque Rise
      18 %
    • 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 °
    • Operating Specifications
      Blade Capacity Range
      20.8 yd³
      Operating Weight
      165089 lb
    • Service Refill Capacities
      Cooling System
      54.9 gal (US)
      Crankcase
      20 gal (US)
      Differential - Final Drives - Front
      71.6 gal (US)
      Differential - Final Drives - Rear
      68.9 gal (US)
      Fuel Tank - Standard
      286.6 gal (US)
      Hydraulic System - Implement and Hydraulic Fan
      68.9 gal (US)
      Hydraulic System - Steering and Braking
      34.9 gal (US)
      Transmission
      29.1 gal (US)
    • Sound Performance - Tier 2
      Machine Sound Power Level (ISO 6395:2008)
      116 dB(A)
      Machine Sound Power Level (ISO 6395:2008)*
      114 dB(A)
      Note (1)
      *Sound suppression equipped
      Note (2)
      The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
      Note (3)
      The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
      Note (4)
      Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.
      Operator Sound Pressure Level (ISO 6396:2008)
      72 dB(A)
      Operator Sound Pressure Level (ISO 6396:2008)*
      72 dB(A)
    • Sound Performance - Tier 4 Final / Stage V
      Machine Sound Power Level (ISO 6395:2008)
      116 dB(A)
      Machine Sound Power Level (ISO 6395:2008)*
      114 dB(A)
      Note (1)
      *Sound suppression equipped
      Note (2)
      The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
      Note (3)
      The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
      Note (4)
      Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.
      Operator Sound Pressure Level (ISO 6396:2008)
      72 dB(A)
      Operator Sound Pressure Level (ISO 6396:2008)*
      72 dB(A)
    • 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 1
      Lock-up disabled
      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
      Note
      Travel speeds based on 45/65-45 L-5 46 ply tires.
      Transmission Type
      Cat Planetary Power Shift
    NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
    ELECTRICAL AND LIGHTING
    • Alternator, 150 amp
    • Batteries, maintenance free (4 - 1,400 CCA)
    • Battery disconnect and jump start receptacle, bumper
    • Deutsch terminal connectors
    • Electrical system, 24V
    • Electronic transmission control
    • Lighting system, halogen (front and rear) lighting, access stairway, engine compartment
    • Starter lockout in bumper
    • Starting and charging system, 24V
    • Transmission lockout in bumper
    POWERTRAIN
    • Brakes, oil cooled, multi-disc, service/secondary
    • Driveline parking brake
    • Engine Cat C27
    • Fuel priming pump (electric)
    • Ground level engine shutdown switch
    • Precleaner, engine air intake (above hood)
    • Radiator, Aluminum Modular (AMR)
    • Starting aid, (ether) automatic
    • Throttle Lock electronic
    • Torque Converter, Impeller clutch with lock-up clutch (ICTC) and rimpull control system
    • Transmission, 534 mm (21 in) planetary power shift (electronic) (3F/3R)
    OPERATOR ENVIRONMENT
    • Advisor display, displays real time operating information, performs calibrations and customizes operator setting
    • Air conditioner and heater with automatic temperature control
    • Air precleaner, powered
    • Cab, sound-suppressed pressurized, separate external rolloever protective structure/falling objects protective structure (ROPS/FOPS)
    • Cigar lighter and ashtray
    • Coat hook
    • Converter (12V, 10/15 amp) and power port
    • Electro-hydraulic blade controls (joystick)
    • Heater and defroster
    • Horn, electric
    • Instrumentation, gauges: - engine coolant temperature, fuel level, hydraulic oil temperature, powertrain oil temperature, tachometer
    • 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
    • Light, dome (cab)
    • Lunchbox and beverage holders
    • Seat, premium with heated and actively cooled leather, adjustable lumbar support, air adjustable bolsters on the seat and backrest, seat cushion tilt adjustment, and adjustable-length seat cushion
    • Radio, AM/FM with Bluetooth®, USB Port, 3.5 mm AUX input
    • Tinted glass
    • Wet-arm wipers/washers (front, rear and corner) intermittent front wiper
    SAFETY
    • Alarm, back-up
    • Camera, rear vision
    • Emergency platform exit
    • Implement lockout switch
    • Mirrors, rearview (externally mounted)
    • Seat belt, retractable, 76 mm (3 in) wide
    • Stairway, left and right rear access
    • Steering and transmission lock lever, cab
    • Steering, secondary
    • Seat, trainer with lap belt, 76 mm (3in) wide
    • Toe kicks
    SERVICE
    • Axle ecology drains
    • Case drain filters
    • Coupling, Caterpillar O-ring face seals
    • Engine, crankcase, 500 hour interval with CH4
    • Front walkway around cab
    • Guards, crankcase and powertrain
    • Grouped/labeled lube points
    • Battery disconnect and jump start receptacle, bumper
    • Hitch, drawbar with pin
    • Hoses, Cat XT™
    • Oil sampling valves
    • Sight guages for steering, implement and transmission oil
    • Vital Information Management System (VIMS) 3G with graphical information display: external data port, customizable operator profiles
    COOLING
    • Standard ambient package (recommended for site conditions that do not exceed 43°C (110°F)
    COLD WEATHER
    • Heated seat
    EFFICIENCY
    • Economy mode with on demand throttle
    • Positive flow control hydraulic system
    • Impeller Clutch Torque Converter (ICTC) with lock-up clutch
    • Steering, load sensing
    • Soft detent controls
    • Engine idle management features: - Auto idle kickdown - Delayed engine shutdown - Engine idle shutdown
    TRAMMING
    • Front fenders
    NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
    ELECTRICAL AND LIGHTING
    • Lights, LED
    • Product Link (Cellular)
    • Product Link (Satellite)
    POWERTRAIN
    • Engine brake
    • No-spin rear axle
    • No-spin rear axle and oil cooler
    • Precleaner, raised
    OPERATOR ENVIRONMENT
    • Radio, Sirius XM/AM/FM radio with Bluetooth technology, USB port, 3.5 mm AUX input
    • Rubber mounted cab glass
    • Window sun screen
    SAFETY
    • LED warning strobe
    SERVICE
    • Product Link™
    BLADES
    • HD Semi-U - 16.1 m3 (21.1 yd3)
    • Paint, black blade rear
    COOLING
    • High ambient cooling - software (recommended for site conditions that do not exceed 49°C [121°F]
    COLD WEATHER
    • 50° C (-58° F) antifreeze
    • 120V or 240V coolant heating elements (recommended in conditions from -18°C to -30°C [0°F to -22°F]
    • -40°C (-40°F) Hydraulic Oil, Arctic
    TRAMMING
    • Fender extensions, roading, front and rear

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