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844K Wheel Dozer

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CALCULATE FINANCE

Long Term Value and Durability

Built to Perform

Performance and Productivity

Work In Comfort

Integrated Cat® Technologies

Technology that Gets Work Done

Safety First

Save on Service and Maintenance

Top-Tier Service and Support

Reduce Environmental Impact

Purpose-Built Cat Attachments

Engine
Engine Model Cat® C27
Gross Power 561 kW (752 HP)
Bore 137.2 mm (5.4 in)
Stroke 152.4 mm (6 in)
Displacement 27.03 l (1649.5 inu00b3)
Torque Rise 18 % (18 %)
Net Power - SAE J1349 - Standard Ambient 521 kW (699 HP)
Net Power - SAE J1349 521 kW (699 HP)
Gross Power - ISO 14396 561 kW (752 HP)
Net Power - SAE J1349 - High Ambient 483 kW (648 HP)
Peak Torque - Speed 3557 N·m (2624 lb/ft)
Emissions U.S. EPA Tier 4 Final or Tier 2 Equivalent
Rated Speed 1800 r/min (1800 r/min)
Gross Power - SAE J1995 571 kW (766 HP)
Weights
Operating Weight 74883 kg (165089 lb)
Transmission
Converter Drive - Forward 1 7.3 km/h (4.5 mile/h)
Converter Drive - Forward 2 13.3 km/h (8.3 mile/h)
Converter Drive - Forward 3 22.9 km/h (14.2 mile/h)
Converter Drive - Reverse 1 7.9 km/h (4.9 mile/h)
Converter Drive - Reverse 2 14.7 km/h (9.1 mile/h)
Converter Drive - Reverse 3 24.9 km/h (15.5 mile/h)
Direct Drive - Forward 2 13.7 km/h (8.5 mile/h)
Direct Drive - Forward 3 24.5 km/h (15.2 mile/h)
Direct Drive - Reverse 1 8.7 km/h (5.4 mile/h)
Direct Drive - Reverse 2 15.4 km/h (9.6 mile/h)
Direct Drive - Reverse 3 26.4 km/h (16.4 mile/h)
Transmission Type Cat Planetary Power Shift
Direct Drive - Forward 1 Lock-up disabled
Service Refill Capacities
Fuel Tank - Standard 1085 l (286.6 gal (US))
Cooling System 208 l (54.9 gal (US))
Crankcase 76 l (20 gal (US))
Transmission 110 l (29.1 gal (US))
Differential - Final Drives - Front 271 l (71.6 gal (US))
Differential - Final Drives - Rear 261 l (68.9 gal (US))
Hydraulic System - Implement and Hydraulic Fan 261 l (68.9 gal (US))
Hydraulic System - Steering and Braking 132 l (34.9 gal (US))
Cab
Cab - ROPS/FOPS (1) Cat cab with separate ROPS/FOPS is standard in North America, Europe and Japan.
Air Conditioning Standard air conditioning system contains environmentally friendly R134a refrigerant
ROPS ROPS meets SAE J11040 APR88, ISO 3471:2008 and ISO 3471:1994 criteria.
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.
Brakes
Brakes Meets ISO 3540:2011
Axles
Front Fixed
Rear Trunnion
Oscillation Angle 8.5 u00b0 (8.5 u00b0)
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) (115 dB(A))
Operator Sound Level (ISO 6396:2008) 69 dB(A) (69 dB(A))
Sound Performance - Suppression
Machine Sound Level (ISO 6395:2008) 113 dB(A) (113 dB(A))
Operator Sound Level (ISO 6396:2008) 69 dB(A) (69 dB(A))
Hydraulic System - Lift/Tilt
Relief Valve Setting - Tilt Cylinders (Small Pump) 20150 kPa (2920 psi)
Output at 2,000 rpm and 6900 kPa (1,000 psi) 311 l/min (82 gal/min)
Cylinders, Double Acting - Lift, Bore and Stroke 133 mm u00d7 1535 mm (5.25 in u00d7 60.4 in)
Relief Valve Setting - Bulldozer (Large Pump) 18650 kPa (2700 psi)
Cylinder, Double Acting - Tilt and Tip, Bore and Stroke 210 mm u00d7 188 mm (8.25 in u00d7 7.4 in)
Hydraulic System - Steering
Total Steering Angle 35 u00b0 (35 u00b0)
Steering System - Circuit Pilot, load sensing
Minimum Turning Radius - Over Blade 10369 mm (34 ft)
Relief Valve Setting 31000 kPa (4500 psi)
Steering System - Pump Piston, variable displacement
Maximum Flow 357 l/min (94.3 gal/min)
Dimensions (Approximate)
Height - Top of Exhaust Pipe 5049 mm (16.6 ft)
Wheel Base 4600 mm (15.1 ft)
Length - With Blade on Ground 11120 mm (36.5 ft)
Centerline of Rear Axle to Edge of Bumper 3795 mm (12.5 ft)
Centerline of Front Axle to Hitch 2300 mm (7.5 ft)
Height - Top of ROPS 5240 mm (17.2 ft)
Ground Clearance 596 mm (2 ft)
Height - Top of Hood 3862 mm (12.7 ft)

Standard 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
    • 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)

Optional Equipment

  • 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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