844K Wheel Dozer

844K Wheel Dozer

Product Specs

Service Refill Capacities

Hydraulic System - Implement and Hydraulic Fan
68.9gal (US)
Hydraulic System - Steering and Braking
34.9gal (US)
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)

Cab

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
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.

Hydraulic System - Lift/Tilt

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
Cylinders, Double Acting - Lift, Bore and Stroke
133 mm × 1535 mm (5.25 in × 60.4 in)

Hydraulic System - Steering

Minimum Turning Radius - Over Blade
34ft
Relief Valve Setting
4500psi
Maximum Flow
94.3gal/min
Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Total Steering Angle
35°

Blade

Blade Capacity Range
15.9-30.7 m3 (20.7-40.2 yd3)

Engine

Engine Model
Cat® C27 ACERT™
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
165089lb

Transmission

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 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

Brakes

Brakes
Meets ISO 3540:2011

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
8.5°

Sound Performance - Standard

Machine Sound Level (ISO 6395:2008)
115dB(A)
Operator Sound Level (ISO 6396:2008)
69dB(A)

Sound Performance - Suppression

Machine Sound Level (ISO 6395:2008)
113dB(A)
Operator Sound Level (ISO 6396:2008)
69dB(A)

Dimensions (Approximate)

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

Worktool Attachments

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 ACERT
    • 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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