844 Wheel Dozer - Ohio CAT

Engine +

Engine Model
Cat® C27
Net Power - SAE J1349:2011 - Standard Ambient
732 hp
Rated Speed
1800 r/min
Emissions
Option 1 - U.S. EPA Tier 4 Final / EU Stage V
Engine Power - ISO 14396:2002
786 hp
Gross Power - SAE J1995:2014
801 hp
Net Power - SAE J1349:2011 - High Ambient
681 hp
Emissions
Option 2 - China Nonroad Stage III emissions standards, equivalent to U.S. EPA Tier 2
Engine Power - ISO 14396: 2002
752 hp
Gross Power - SAE J1995:2014
766 hp
Net Power - SAE J1349:2011 - Standard Ambient
699 hp
Net Power - SAE J1349:2011 - High Ambient
648 hp
Bore
5.4 in
Stroke
6.0 in
Displacement
1649.5 in³
Peak Torque - Speed
2624 lb/ft
Torque Rise
18 %
Note
Net power advertised is the power available at the flywheel when the engine is equipped with fan at minimum speed, air intake system, exhaust system, and alternator.

Operating Specifications +

Operating Weight
165089 lb
Blade Capacity Range
20.8 yd³

Transmission +

Transmission Type
Cat Planetary Power Shift
Converter Drive - Forward 1
4.5 mile/h
Converter Drive - Forward 2
8.3 mile/h
Converter Drive - Forward 3
14.2 mile/h
Converter Drive - Reverse 1
4.9 mile/h
Converter Drive - Reverse 2
9.1 mile/h
Converter Drive - Reverse 3
15.5 mile/h
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 2
8.5 mile/h
Direct Drive - Forward 3
15.2 mile/h
Direct Drive - Reverse 1
5.4 mile/h
Direct Drive - Reverse 2
9.6 mile/h
Direct Drive - Reverse 3
16.4 mile/h
Note
Travel speeds based on 45/65-45 L-5 46 ply tires.

Hydraulic System - Lift/Tilt +

Output at 2,000 rpm and 6900 kPa (1,000 psi)
82 gpm
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)
Relief Valve Setting - Bulldozer (Large Pump)
2700 psi
Relief Valve Setting - Tilt Cylinders (Small Pump)
2920 psi

Hydraulic System - Steering +

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

Service Refill Capacities +

Fuel Tank - Standard
286.6 gal (US)
Cooling System
54.9 gal (US)
Crankcase
20 gal (US)
Transmission
29.1 gal (US)
Differential - Final Drives - Front
71.6 gal (US)
Differential - Final Drives - Rear
68.9 gal (US)
Hydraulic System - Implement and Hydraulic Fan
68.9 gal (US)
Hydraulic System - Steering and Braking
34.9 gal (US)

Air Conditioning System +

Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. - If equipped with R134a (Global Warming Potential = 1430), the system contains 1.8 kg (3.9 lb) of refrigerant, which has a CO2 equivalent of 2.574 metric tonnes (2.837 tons).

Axles +

Front
Fixed
Rear
Trunnion
Oscillation Angle
8.5 °

Brakes +

Brakes
Meets ISO 3540:2011

Sound Performance - Tier 4 Final / Stage V +

Operator Sound Pressure Level (ISO 6396:2008)
72 dB(A)
Machine Sound Power Level (ISO 6395:2008)
116 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*
72 dB(A)
Machine Sound Power Level (ISO 6395:2008)*
114 dB(A)
Note (1)
*Sound suppression equipped
Note (2)
The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Note (3)
The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Note (4)
Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.

Sound Performance - Tier 2 +

Operator Sound Pressure Level (ISO 6396:2008)
72 dB(A)
Machine Sound Power Level (ISO 6395:2008)
116 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*
72 dB(A)
Machine Sound Power Level (ISO 6395:2008)*
114 dB(A)
Note (1)
*Sound suppression equipped
Note (2)
The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Note (3)
The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Note (4)
Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.

Cab +

ROPS/FOPS
ISO 3471:2008 and ISO 3449:2005 Level II Standards

Dimensions (Approximate) +

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

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

ELECTRICAL AND LIGHTING

Alternator, 150 amp
Batteries, maintenance free (4 - 1,400 CCA)
Battery disconnect and jump start receptacle, bumper
Deutsch terminal connectors
Electrical system, 24V
Electronic transmission control
Lighting system, halogen (front and rear) lighting, access stairway, engine compartment
Starter lockout in bumper
Starting and charging system, 24V
Transmission lockout in bumper

POWERTRAIN

Brakes, oil cooled, multi-disc, service/secondary
Driveline parking brake
Engine Cat C27
Fuel priming pump (electric)
Ground level engine shutdown switch
Precleaner, engine air intake (above hood)
Radiator, Aluminum Modular (AMR)
Starting aid, (ether) automatic
Throttle Lock electronic
Torque Converter, Impeller clutch with lock-up clutch (ICTC) and rimpull control system
Transmission, 534 mm (21 in) planetary power shift (electronic) (3F/3R)

OPERATOR ENVIRONMENT

Advisor display, displays real time operating information, performs calibrations and customizes operator setting
Air conditioner and heater with automatic temperature control
Air precleaner, powered
Cab, sound-suppressed pressurized, separate external rolloever protective structure/falling objects protective structure (ROPS/FOPS)
Cigar lighter and ashtray
Coat hook
Converter (12V, 10/15 amp) and power port
Electro-hydraulic blade controls (joystick)
Heater and defroster
Horn, electric
Instrumentation, gauges: - engine coolant temperature, fuel level, hydraulic oil temperature, powertrain oil temperature, tachometer
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
Light, dome (cab)
Lunchbox and beverage holders
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
Radio, AM/FM with Bluetooth®, USB Port, 3.5 mm AUX input
Tinted glass
Wet-arm wipers/washers (front, rear and corner) intermittent front wiper

SAFETY

Alarm, back-up
Camera, rear vision
Emergency platform exit
Implement lockout switch
Mirrors, rearview (externally mounted)
Seat belt, retractable, 76 mm (3 in) wide
Stairway, left and right rear access
Steering and transmission lock lever, cab
Steering, secondary
Seat, trainer with lap belt, 76 mm (3in) wide
Toe kicks

SERVICE

Axle ecology drains
Case drain filters
Coupling, Caterpillar O-ring face seals
Engine, crankcase, 500 hour interval with CH4
Front walkway around cab
Guards, crankcase and powertrain
Grouped/labeled lube points
Battery disconnect and jump start receptacle, bumper
Hitch, drawbar with pin
Hoses, Cat XT™
Oil sampling valves
Sight guages for steering, implement and transmission oil
Vital Information Management System (VIMS) 3G with graphical information display: external data port, customizable operator profiles

COOLING

Standard ambient package (recommended for site conditions that do not exceed 43°C (110°F)

COLD WEATHER

Heated seat

EFFICIENCY

Economy mode with on demand throttle
Positive flow control hydraulic system
Impeller Clutch Torque Converter (ICTC) with lock-up clutch
Steering, load sensing
Soft detent controls
Engine idle management features: - Auto idle kickdown - Delayed engine shutdown - Engine idle shutdown

TRAMMING

Front fenders

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

ELECTRICAL AND LIGHTING

Lights, LED
Product Link (Cellular)
Product Link (Satellite)

POWERTRAIN

Engine brake
No-spin rear axle
No-spin rear axle and oil cooler
Precleaner, raised

OPERATOR ENVIRONMENT

Radio, Sirius XM/AM/FM radio with Bluetooth technology, USB port, 3.5 mm AUX input
Rubber mounted cab glass
Window sun screen

SAFETY

LED warning strobe

SERVICE

Product Link™

BLADES

HD Semi-U - 16.1 m3 (21.1 yd3)
Paint, black blade rear

COOLING

High ambient cooling - software (recommended for site conditions that do not exceed 49°C [121°F]

COLD WEATHER

50° C (-58° F) antifreeze
120V or 240V coolant heating elements (recommended in conditions from -18°C to -30°C [0°F to -22°F]
-40°C (-40°F) Hydraulic Oil, Arctic

TRAMMING

Fender extensions, roading, front and rear

Wheel Dozers

844

OVERVIEW

BENEFITS

Long Term Value and Durability

Move More with Less Fuel

Safety First

Technology that Gets Work Done

Work In Comfort

Reduce Environmental Impact

Save on Service and Maintenance

Purpose-Built Cat Attachments

Get a Quote for 844

NOTE

ELECTRICAL AND LIGHTING

POWERTRAIN

OPERATOR ENVIRONMENT

SAFETY

SERVICE

COOLING

COLD WEATHER

EFFICIENCY

TRAMMING

NOTE

ELECTRICAL AND LIGHTING

POWERTRAIN

OPERATOR ENVIRONMENT

SAFETY

SERVICE

BLADES

COOLING

COLD WEATHER

TRAMMING

MEDIA GALLERY

DOWNLOAD RESOURCES

BROWSE

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