- 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
- C27 Cat®
- 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 yd.3)
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
- 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)
-
- 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/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