844K Wheel Dozer

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844K Wheel Dozer

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Cat Large 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 ...
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Engine

Engine Model
Cat® C27 ACERT™
Gross Power
752HP
Bore
5.4in
Stroke
6in
Displacement
1649.5in³
Torque Rise
18%
Rated Speed
1800r/min
Peak Torque - Speed
2624lb/ft
Net Power - SAE J1349 - Standard Ambient
699HP
Net Power - SAE J1349 - High Ambient
648HP
Net Power - SAE J1349
699HP
Gross Power - SAE J1995
766HP
Gross Power - ISO 14396
752HP
Emissions
U.S. EPA Tier 4 Final or Tier 2 Equivalent

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
Transmission Type
Cat Planetary Power Shift
Direct Drive - Forward 1
Lock-up disabled

Service Refill Capacities

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
8.5°

Brakes

Brakes
Meets ISO 3540:2011

Dimensions (Approximate)

Height - Top of Hood
12.7ft
Height - Top of Exhaust Pipe
16.6ft
Ground Clearance
2ft
Centerline of Rear Axle to Edge of Bumper
12.5ft
Centerline of Front Axle to Hitch
7.5ft
Height - Top of ROPS
17.2ft
Length - With Blade on Ground
36.5ft
Wheel Base
15.1ft

Hydraulic System - Steering

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

Hydraulic System - Lift/Tilt

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

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

Sound Performance - Standard

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

Cab

ROPS
ROPS meets SAE J11040 APR88, ISO 3471:2008 and ISO 3471:1994 criteria.
FOPS
FOPS meets SAE J231 JAN81 and ISO 3449:1992 Level II criteria.
Air Conditioning
Standard air conditioning system contains environmentally friendly R134a refrigerant
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

Blade

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

Standard Equipment:

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