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Overview

The Cat® 844H Wheel Dozer continues the Caterpillar tradition with its power, mobility, operator comfort and blade selection that allows you to get the job done quickly and economically. The 844H is ideally suited for the rugged duties associated with mining, quarries and utilities.

Engine

Units:
Engine Model Cat® C27 ACERT® Cat® C27 ACERT® Less
Gross Power 687.0 hp 512.0 kW Less
Net Power 627.0 hp 468.0 kW Less
Bore 5.4 in 137.0 mm Less
Stroke 6.0 in 152.0 mm Less
Displacement 1666.0 in3 27.1 L Less
Cylinders 12 12 Less
Torque Rise 31.0 % 31.0 % Less
Net Power – DIN 70020 650 PS 650 PS Less
Net Power – EEC 80/1269 627.0 hp 468.0 kW Less
Net Power – ISO 14396 669.0 hp 499.0 kW Less
Net Power – ISO 9249 627.0 hp 468.0 kW Less
Net Power – SAE J1349 (JAN90) 621.0 hp 463.0 kW Less

Weights

Operating Weight 156120.0 lb 70815.0 kg Less

Transmission

Converter Drive – Forward 1 4.4 mph 7.0 km/h Less
Converter Drive – Forward 2 7.6 mph 12.2 km/h Less
Converter Drive – Forward 3 13.0 mph 21.0 km/h Less
Converter Drive – Reverse 1 4.8 mph 7.7 km/h Less
Converter Drive – Reverse 2 8.4 mph 13.4 km/h Less
Converter Drive – Reverse 3 14.3 mph 23.0 km/h Less
Direct Drive – Forward 1 4.5 mph 7.2 km/h Less
Direct Drive – Forward 2 7.9 mph 12.8 km/h Less
Direct Drive – Forward 3 14.0 mph 22.5 km/h Less
Direct Drive – Reverse 1 4.9 mph 7.9 km/h Less
Direct Drive – Reverse 2 8.8 mph 14.1 km/h Less
Direct Drive – Reverse 3 15.4 mph 24.8 km/h Less
Number of Forward Speeds 3 3 Less
Number of Reverse Speeds 3 3 Less

Hydraulic System

Output at 2,040 rpm and 6900 kPa (1,000 psi) 82.0 gal/min 311.0 L/min Less
Cylinder, Double-Acting: Tilt and Tip, Bore and Stroke 209.5 mm × 188 mm (8.25 in × 7.5 in) 209.5 mm × 188 mm (8.25 in × 7.5 in) Less
Relief Valve Setting – Bulldozer (Large Pump) 2700.0 psi 18650.0 kPa Less
Relief Valve Setting – Tilt Cylinders (Small Pump) 2920.0 psi 20150.0 kPa Less

Steering

Relief Valve Setting 4500.0 psi 31000.0 kPa Less
Hydraulic Output at 2,128 rpm and 6900 kPa (1,000 psi) 108.0 gal/min 410.0 L/min Less
Minimum Turning Radius (over bucket) 407.0 in 10337.0 mm Less
Minimum Turning Radius (over bucket) – HL 424.0 in 10757.0 mm Less
Steering Angle, each direction 35.0 Degrees 35.0 Degrees Less

Service Refill Capacities

Fuel Tank – Standard 268.4 gal 1016.0 L Less
Cooling System 39.6 gal 150.0 L Less
Crankcase 25.0 gal 95.0 L Less
Transmission 29.0 gal 110.0 L Less
Hydraulic Tank 189.4 gal 717.0 L Less
Differentials and Final Drives – Front 71.6 gal 271.0 L Less
Differentials and Final Drives – Rear 68.9 gal 261.0 L Less
Hydraulic System – Implement and Brakes (Tank Only) 52.0 gal 197.0 L Less
Hydraulic System – Steering and Engine Cooling Fan (Tank Only) 34.9 gal 132.0 L Less

Cab

Cab – ROPS/FOPS Meets SAE and ISO standards Meets SAE and ISO standards Less

Brakes

Brakes Meets SAE/ISO 3450 1996 Meets SAE/ISO 3450 1996 Less

Axles

Front Fixed Fixed Less
Rear Oscillating ±11° Oscillating ±11° Less
Maximum Single-Wheel Rise and Fall 22.5 in 572.0 mm Less

Operating Specifications

Operating Weight 156120.0 lb 70815.0 kg Less

Blades

Blade Capacities 16.1 m3-30.7 m3 (21.1 yd3-40.2 yd3) 16.1 m3-30.7 m3 (21.1 yd3-40.2 yd3) Less

Sound Performance Levels

Sound Performance Meets ANSI, SAE and ISO standards Meets ANSI, SAE and ISO standards Less

Productivity


Fuel Efficiency

Fuel management


Reliability

Maximizing uptime, long life – it’s what you expect from your Cat® Wheel Dozer


Operator Comfort

Best-in-class working environment


Serviceability

Increasing uptime by reducing service time


Sustainability

Protecting the environment


Safety

Built to protect you


Technology Solutions


Customer Support

Count on Cat dealers for business solutions


Blades

Options to reduce your cost per ton


844H Standard Equipment

ELECTRICAL
  • Alternator, 95-ampere
  • Converter, for 12-volt accessories
  • Diagnostic connector for starting and charging systems
  • Electric starter (heavy-duty)
  • Electrical system, 24-volt
  • External lighting system, front and rear
  • Maintenance-free batteries
  • Starting receptacle for emergency starting

OPERATOR ENVIRONMENT
  • Air conditioner, R134a refrigerant
  • Cab with sound suppression
  • Comfort Series Seat with air suspension
  • Cigar lighter and ashtray
  • Coat hook
  • Computerized Monitoring System: – Action alert system, three-category – Gauges: • tachometer • fuel level • hydraulic oil temperature • transmission oil temperature • engine oil pressure • coolant temperature
  • Dome light (cab)
  • Electric horn
  • External two-post ROPS structure
  • Heater and defroster
  • Integrated joystick blade control
  • Load-sensing steering
  • Quick-shift feature
  • Radio-ready cab for entertainment or two-way radio (three-point mounting)
  • Rearview mirrors
  • Retractable seat belt 76 mm (3 in) wide
  • Floor mounted hydraulic controls
  • Sight gauges: • Hydraulic oil, engine coolant and transmission
  • STIC™ Control Steering System
  • Storage for lunch box, cup
  • Sunshade/visor, front and rear
  • Throttle lock
  • Tinted glass
  • Trainer’s seat with seatbelt
  • Transmission gear indicator
  • Wet-arm wiper/washers, front and rear

POWER TRAIN
  • Cat C27 MEUI engine with ACERT® Technology
  • Air-to-Air Aftercooling System (ATAAC)
  • ADEM™ IV Controller
  • Brakes: • Parking: Dry, multi-disc brake; transmission mounted • Service/Secondary: enclosed, wet, multi-disc brake at each wheel
  • Electric fuel priming aid
  • Impeller Clutch Torque Converter with lockup clutch
  • Precleaner/ejector
  • Remote-mounted hydraulic engine fan
  • Separated cooling system
  • Sound suppressed muffler
  • Supplemental steering
  • Transmission: • 533 mm (21 in) planetary power shift (electronic) • 3-speed forward/3-speed reverse

OTHER STANDARD EQUIPMENT
  • Backup alarm
  • Drawbar hitch with pin
  • Fenders (front)
  • Fuel cooler
  • High speed oil change system
  • Hydraulic oil cooler
  • Locking engine enclosures
  • Power train/guard
  • Rear access stairs
  • Vandalism protection and caplocks
  • Venturi stacks

TIRES
  • 45/65 R39 L-4 (XLDDIA), Michelin
  • Contact your Cat dealer for more options.

844H Optional Equipment

Blades
  • Semi-U
  • HD Semi-U
  • Coal U-Blade

Electrical
  • Lights – Engine Compartment
  • HID Lights
  • Product Link
  • Radio – AM/FM Cassette
  • Rotating Beacon
  • Rear Vision Camera

Starting Aids
  • Diesel Fuel Heater
  • Engine Coolant Heater – 120 volt
  • Engine Coolant Heater – 240 volt
  • Starting, Cold Weather

Fuel System
  • Fast Fuel

Access
  • Left Side Stairway
  • Front Walkway
  • Roading Fenders

Miscellaneous
  • Sound Suppression
  • Cab Precleaner
  • Autolube System – Electric
  • Case Drain Filtration
  • Cooling – High Ambient

Tires
  • Contact your Order Coordinator for current tire options and availability.

Cat® Dealer Service

Buy any piece of Cat® equipment and also get the full support and commitment of your local Cat Dealer.

Contact your local dealer
Financing & Insurance

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