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844 Wheel Dozer
834 Wheel Dozer

Engine

Engine Model Cat® C27 Cat® C18  -
Net Power - SAE J1349:2011 - Standard Ambient 699 hp - -
Rated Speed 1800 r/min 1900 r/min -
Emissions Option 2 - China Nonroad Stage III emissions standards, equivalent to U.S. EPA Tier 2 - -
Engine Power - ISO 14396:2002 786 hp - -
Gross Power - SAE J1995:2014 766 hp 562 hp -
Net Power - SAE J1349:2011 - High Ambient 648 hp - -
Engine Power - ISO 14396: 2002 752 hp - -
Bore 5.4 in 5.7 in -
Stroke 6 in 7.2 in -
Displacement 1649.5 in³ 1105 in³ -
Peak Torque - Speed 2624 lb/ft - -
Torque Rise 18 % 52 % -
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. - -
Net Power - SAE J1349:2011 - 496 hp -
Peak Power Speed - 1500 r/min -
Peak Torque - 1,300 rpm - 2092 lb/ft -
Note (1) - Net power advertised is the power available at the engine flywheel when the engine is equipped with a fan, air cleaner, clean emissions module and alternator. -
Note (2) - The following engine configurations are available: – Meets U.S. EPA Tier 4 Final and EU Stage V emission standards. – Noncertified that emits equivalent to U.S. EPA Tier 3. -

Operating Specifications

Operating Weight 165089 lb 105271 lb -
Blade Capacity Range 20.8 yd³ - -
Blade Capacities - 7.9 – 22.2 m3 (10.3 – 29.0 yd3) -

Transmission

Transmission Type Cat Planetary Power Shift 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 Lock-up disabled -
Direct Drive - Forward 2 8.5 mile/h 7.7 mile/h -
Direct Drive - Forward 3 15.2 mile/h 13.7 mile/h -
Direct Drive - Reverse 1 5.4 mile/h 4.5 mile/h -
Direct Drive - Reverse 2 9.6 mile/h 8.1 mile/h -
Direct Drive - Reverse 3 16.4 mile/h 14.3 mile/h -
Note Travel speeds based on 45/65-45 L-5 46 ply tires. Travel speeds based on 35/65-R33 tire -
Forward - 1 - 4.2 mile/h -
Forward - 2 - 7.2 mile/h -
Forward - 3 - 12.6 mile/h -
Forward - 4 - 22 mile/h -
Reverse - 1 - 4.2 mile/h -
Reverse - 2 - 7.6 mile/h -
Reverse - 3 - 13.3 mile/h -
Direct Drive - Forward 4 - 23.9 mile/h -

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) 139.75 mm × 1021 mm (5.5 in × 40.2 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 - -
Lift/Tilt System - Circuit - Pilot operated LS valve with EH -
Lift/Tilt System - Variable displacement piston -
Maximum Flow at 1,900 rpm - 153 gpm -
Relief Valve Setting - Lift/Tilt - 4641 psi -
Cylinders, Double Acting - Left and Right Tilt, Bore and Stroke - 140 mm × 230 mm (5.5 in × 9.1 in) -
Pilot System - Variable displacement piston -
Pilot Maximum Flow - 13.7 gpm -
Pilot Relief Valve Setting - 580 psi -

Hydraulic System - Steering

Steering System - Circuit Pilot, load sensing Pilot, load sensing -
Steering System - Pump Piston, variable displacement Piston, variable displacement -
Minimum Turning Radius - Over Blade 34 ft - -
Total Steering Angle 35 ° 86 ° -
Maximum Flow 94.3 gpm 65.8 gpm -
Relief Valve Setting 4500 psi - -
Relief Valve Setting - Steering - 3495 psi -
Steering Cycle Times - High Idle - 3.1 s -
Steering Cycle Times - Low Idle - 5.7 s -

Service Refill Capacities

Fuel Tank - Standard 286.6 gal (US) - -
Cooling System 54.9 gal (US) 31.7 gal (US) -
Crankcase 20 gal (US) 15.9 gal (US) -
Transmission 29.1 gal (US) 31.7 gal (US) -
Differential - Final Drives - Front 71.6 gal (US) 49.1 gal (US) -
Differential - Final Drives - Rear 68.9 gal (US) 49.1 gal (US) -
Hydraulic System - Implement and Hydraulic Fan 68.9 gal (US) - -
Hydraulic System - Steering and Braking 34.9 gal (US) - -
Fuel Tank - 209.5 gal (US) -
Diesel Exhaust Fluid Tank - 8.7 gal (US) -
Hydraulic System Factory Fill - 63.4 gal (US) -
Hydraulic System - Tank Only - 37 gal (US) -
Note (1) - All non-road Tier 4 Final/Stage V diesel engines are required to use: – ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: • 20% biodiesel FAME (fatty acid methyl este -

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 co 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 co -

Axles

Front Fixed Fixed -
Rear Trunnion Trunnion -
Oscillation Angle 8.5 ° ±13° -

Brakes

Brakes Meets ISO 3540:2011 ISO 3450: 2011 -

Sound Performance - Tier 4 Final / Stage V

Operator Sound Pressure Level (ISO 6396:2008) 72 dB(A) 72 dB(A) -
Machine Sound Power Level (ISO 6395:2008) 116 dB(A) 113 dB(A) -
Operator Sound Pressure Level (ISO 6396:2008)* 72 dB(A) 72 dB(A) -
Machine Sound Power Level (ISO 6395:2008)* 114 dB(A) - -
Note (1) *Sound suppression equipped * For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives” -
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. ** European Union Directive “2000/14/EC” as amended by “2005/88/EC” and UK Noise Regulation 2001 No. 1701 -
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. 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 (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. 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. -
Machine Sound Power Level (ISO 6395:2008)** - 109 dB(A) -
Note (5) - 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 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 - -

Sound Performance - Tier 3 / Stage IIIA

Operator Sound Pressure Level (ISO 6396:2008) - 72 dB(A) -
Machine Sound Power Level (ISO 6395:2008) - 113 dB(A) -
Operator Sound Pressure Level (ISO 6396:2008)* - 72 dB(A) -
Machine Sound Power Level (ISO 6395:2008)** - 110 dB(A) -
Note (1) - * For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives” -
Note (2) - ** European Union Directive “2000/14/EC” as amended by “2005/88/EC” and UK Noise Regulation 2001 No. 1701 -
Note (3) - 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 (4) - 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 (5) - 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. -

Dimensions

Height - Top of Exhaust Stack - 15.9 ft -
Height - Top of Air Cleaner - 12.8 ft -
Height - Top of Hood - 10.9 ft -
Ground Clearance - Bumper - 3.1 ft -
Centerline of Rear Axle to Edge of Bumper - 10.5 ft -
Wheel Base - 14.9 ft -
Length - Front of Tire - 28.4 ft -
Length - Straight Blade on Ground - 32.6 ft -
Length - Universal Blade on Ground - 34.4 ft -
Centerline of Front Axle to Hitch - 7.5 ft -
Ground Clearance - 1.7 ft -
Height - Top of Cab - 13.7 ft -
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