Wheel Dozers 844H

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Key Specs

Engine Model
Cat® C27 ACERT®
Cat® C27 ACERT®
Gross Power
687 HP
512 kW
Operating Weight
156120 lb
70815 kg

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.

Product Specifications for 844H

Engine Model Cat® C27 ACERT® Cat® C27 ACERT®
Gross Power 687 HP 512 kW
Net Power 627 HP 468 kW
Bore 5.4 in 137 mm
Stroke 6 in 152 mm
Displacement 1666 in³ 27.1 l
Cylinders 12 12
Torque Rise 31 % 31 %
Net Power - SAE J1349 (JAN90) 621 HP 463 kW
Net Power - EEC 80/1269 627 HP 468 kW
Net Power - ISO 9249 627 HP 468 kW
Net Power - ISO 14396 669 HP 499 kW
Net Power - DIN 70020 650 PS 650 PS
Operating Weight 156120 lb 70815 kg
Converter Drive - Forward 1 4.4 mile/h 7 km/h
Converter Drive - Forward 2 7.6 mile/h 12.2 km/h
Converter Drive - Forward 3 13 mile/h 21 km/h
Converter Drive - Reverse 1 4.8 mile/h 7.7 km/h
Converter Drive - Reverse 2 8.4 mile/h 13.4 km/h
Converter Drive - Reverse 3 14.3 mile/h 23 km/h
Direct Drive - Forward 1 4.5 mile/h 7.2 km/h
Direct Drive - Forward 2 7.9 mile/h 12.8 km/h
Direct Drive - Forward 3 14 mile/h 22.5 km/h
Direct Drive - Reverse 1 4.9 mile/h 7.9 km/h
Direct Drive - Reverse 2 8.8 mile/h 14.1 km/h
Direct Drive - Reverse 3 15.4 mile/h 24.8 km/h
Number of Forward Speeds 3 3
Number of Reverse Speeds 3 3
Output at 2,040 rpm and 6900 kPa (1,000 psi) 82 gal/min 311 l/min
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)
Relief Valve Setting - Bulldozer (Large Pump) 2700 psi 18650 kPa
Relief Valve Setting - Tilt Cylinders (Small Pump) 2920 psi 20150 kPa
Relief Valve Setting 4500 psi 31000 kPa
Steering Angle - Each Direction 35 ° 35 °
Minimum Turning Radius - Over Bucket 407 in 10337 mm
Hydraulic Output at 2,128 rpm and 6900 kPa (1,000 psi) 108 gal/min 410 l/min
Minimum Turning Radius - Over Bucket - HL 424 in 10757 mm
Fuel Tank - Standard 268.4 gal (US) 1016 l
Cooling System 39.6 gal (US) 150 l
Crankcase 25 gal (US) 95 l
Transmission 29 gal (US) 110 l
Hydraulic Tank 189.4 gal (US) 717 l
Differential - Final Drives - Front 71.6 gal (US) 271 l
Differential - Final Drives - Rear 68.9 gal (US) 261 l
Hydraulic System - Implement and Brakes - Tank Only 52 gal (US) 197 l
Hydraulic System - Steering and Engine Cooling Fan - Tank Only 34.9 gal (US) 132 l
Cab - ROPS/FOPS Meets SAE and ISO standards Meets SAE and ISO standards
Brakes Meets SAE/ISO 3450 1996 Meets SAE/ISO 3450 1996
Front Fixed Fixed
Rear Oscillating ±11° Oscillating ±11°
Maximum Single-Wheel Rise and Fall 22.5 in 572 mm
Operating Weight 156120 lb 70815 kg
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)
Sound Performance Meets ANSI, SAE and ISO standards Meets ANSI, SAE and ISO standards

844H Standard Equipment

NOTE

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

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

NOTE

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

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.

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Efficient equipment management starts with the Cat App. Track the location and health of your equipment, order service and parts, and activate telematics devices directly from your mobile device. Staying on top of your fleet 24/7 has never been easier.

Explore Technology

Cat® Inspect allows you to access your equipment data on your mobile device. This easy-to-use app lets you capture inspection data and integrates with your other Cat data systems, so you can keep a close eye on your fleet. More than one million inspections are completed each year, providing convenience and accountability to equipment owners.

Explore Technology

Cat® Product Link™ wirelessly connects you to your equipment giving you valuable insight into how your machine or fleet is performing. Information such as location, hours, fuel usage, productivity, idle time, and diagnostic codes are made available through online web applications so that you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower the cost of owning and operating your fleet. Available with satellite or cellular connectivity.

Explore Technology

View fleet information online with VisionLink and use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety on your jobsite. With different subscription level options, your Cat dealer can help configure exactly what you need to optimize your fleet and drive additional profit.

Explore Technology

Import telematics data into your own applications for improved fleet management. Our API meets AEMP 2.0 and ISO 15143-3 standards, ideal for mixed fleets.

Explore Technology

My.Cat.Com is the web-based hub for digital equipment management, giving you an easy way to take in complex information. Monitor cost, utilization, reliability, age information and other critical data needed to run a business more efficiently and effectively. Access your equipment information and connect with your Cat dealer – all in one place.

Explore Technology