844 Wheel Dozer

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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 844 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.

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Bore 5.4in
Displacement 1649.5in³
Emissions U.S. EPA Tier 4 Final and EU Stage V or China Nonroad Stage III Emissions standards, equivalent to U.S. EPA Tier 2
Engine Model C27 Cat®
Gross Power - ISO 14396 752HP
Gross Power - SAE J1995 766HP
Net Power - SAE J1349 - High Ambient 648HP
Net Power - SAE J1349 - Standard Ambient 699HP
Peak Torque - Speed 2624lb/ft
Rated Speed 1800r/min
Stroke 6in
Torque Rise 18%
Blade Capacities 15.9 - 30.7 m3 (20.7 - 40.2 yd3)
Operating Weight 165089lb
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
Converter Drive - Reverse 3 15.5mile/h
Direct Drive - Forward 1 Lock-up disabled
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
Transmission Type Cat Planetary Power Shift
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) 82gal/min
Relief Valve Setting - Bulldozer (Large Pump) 2700psi
Relief Valve Setting - Tilt Cylinders (Small Pump) 2920psi
Maximum Flow 94.3gal/min
Minimum Turning Radius - Over Blade 34ft
Relief Valve Setting 4500psi
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Total Steering Angle 35°
Cooling System 54.9gal (US)
Crankcase 20gal (US)
Differential - Final Drives - Front 71.6gal (US)
Differential - Final Drives - Rear 68.9gal (US)
Fuel Tank - Standard 286.6gal (US)
Hydraulic System - Implement and Hydraulic Fan 68.9gal (US)
Hydraulic System - Steering and Braking 34.9gal (US)
Transmission 29.1gal (US)
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes.
Front Fixed
Oscillation Angle 8.5°
Rear Trunnion
Brakes Meets ISO 3540:2011
Machine Sound Level (ISO 6395:2008) 115dB(A)
Operator Sound Level (ISO 6396:2008) 69dB(A)
Machine Sound Level (ISO 6395:2008) 113dB(A)
Operator Sound Level (ISO 6396:2008) 69dB(A)
ROPS/FOPS ISO 3471:2008 and ISO 3449:2005 Level II Standards
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

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • 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
    • Cigar lighter and ashtray
    • Coat hook
    • Electro-hydraulic blade controls (joystick)
    • Flip-up armrest
    • Heater and defroster
    • Horn, electric
    • 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, 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
    • STIC control system with steering lock
    • Tinted glass
    • Wet-arm wipers/washers (front, rear and corner) intermittent front wiper
    • Converter (12V, 10/15 amp) and power port
  • Power Train
    • Brakes, oil cooled, multi-disc, service/secondary
    • Axle-shaft oil-disc service brake
    • Electro hydraulic parking brake
    • Cat clean emission module (Tier 4 only)
    • Demand fan
    • Engine Cat C27
    • Fuel priming pump (electric)
    • Ground level engine shutoff
    • Mufflers (under hood) (Tier 2 only)
    • Precleaner, engine air intake
    • Radiator, Aluminum Modular (AMR)
    • Separated cooling system
    • Starting aid, (ether) automatic
    • Throttle Lock electronic
    • 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
    • Alternator, 150 amp
    • Batteries, maintenance free (4 - 1,400 CCA)
    • Deutsch terminal connectors
    • Electrical system, 24V
    • Electronic transmission control
    • Lighting system, halogen (front and rear) lighting, access stairway, engine compartment
    • Starting and charging system, 24V
    • Starter lockout in bumper
    • Starting receptacle for emergency start
    • Transmission lockout in bumper
  • Service
    • Vital Information Management System (VIMS) 3G with graphical information display: external data port, customizable operator profiles
    • Case drain filters
    • Coupling, Caterpillar O-ring face seals
    • Guards, crankcase and power train
    • Hitch, drawbar with pin
    • Hoses, Cat XT
    • Oil sampling valves
    • Product Link
  • Safety
    • Camera, rear vision
    • Implement lockout switch
    • Seat belt, retractable, 76 mm (3 in) wide
    • Trainer seat with lap belt
    • Alarm, back-up
    • Emergency platform egress
    • Stairway, left and right rear access
    • Steering, secondary
    • Toe kicks
  • Tramming
    • Fenders, steel (front)
  • Other
    • Axle temperature sensor
    • Battery disconnect and jump start receptacle, bumper
    • Economy mode with on demand throttle
    • Engine, crankcase, 500 hour interval with CH4
    • Engine idle management features: - Auto idle kickdown - Delayed engine shutdown - Engine idle shutdown
    • Grouped/labeled lube points
    • Positive flow control hydraulic system
    • Sight Gauges: hydraulic tanks, steering/fan and implement/brake, and transmission
    • Steering, load sensing
    • Vandalism protection caplocks
    • Premixed 50% concentration of extended life coolant with freeze protection to -34° C (-29° F)

Optional Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • 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/MP3 radio
    • Satellite Sirius radio with Bluetooth
    • LED warning strobe
    • CB radio ready
    • Window sun shade
  • Tramming
    • Front and rear roading fenders
  • Miscellaneous Attachments
    • Fast fill fuel system (Shaw-Aero)
    • Axle oscillation stop
    • Paint, black blade rear
  • Other
    • Venturi stack
Renee HerndonRenee Herndon
21:55 29 Feb 24
Dalton was very helpful, The road construction, however, was not! 😂I would rather have to sand paper an alligators @$$ in a phone booth that to get in that mess again.
Michael BirrenMichael Birren
14:58 24 Feb 24
I purchased a used C-15 from a customer of Greg Pool was a running take out. I picked up the engine from the Greg Pool Cat near Nags Head NC. They started they had done all service on this engine stated the hours and all items replaced during the life of engine under their care. I just recently put the engine in my boat after 2 years of building the vessel I find that everything they said about the engine was a LIE!!! Turbo was Bad, After cooler was not updated to the newer version for the C-15 it was missing a terminal Resistor that was clearly stolen off the engine which created a major issue with start up upon installation. Greg Pool Caterpillar stated the hours at 3300 we find out there were 5700 hours. I didn’t do a start up or test run which I regret because i was dealing with a Caterpillar dealer i thought i could trust them. Clearly not Buyers Be Ware if your dealing with Greg Pool Caterpillar in NC. I have 3 of the C-15 engines in my Work boats here in Tampa Fl and my Cat dealership here is Ring power who have done an amazing job to get me going with this Engine. I am very Disappointed in The Caterpillar company for allowing such A dealership to exist.
David LawrenceDavid Lawrence
13:04 22 Feb 24
Brandon PierceBrandon Pierce
22:00 18 Feb 24
Darin NoeDarin Noe
01:17 16 Feb 24
Jose SotoJose Soto
15:26 23 Sep 23
Hunter ElliottHunter Elliott
16:17 07 Sep 23
Rick Kelly-CrapseRick Kelly-Crapse
21:06 25 Aug 23
They had all my parts for my 3208 Cat.Friendly folks at parts counter.
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