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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