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844 Wheel Dozer
814 Wheel Dozer

Engine

Engine Model Cat® C27 Cat® C7.1 -
Net Power - SAE J1349:2011 - Standard Ambient 699 hp - -
Rated Speed 1800 r/min 2200 r/min -
Emissions Option 2 - China Nonroad Stage III emissions standards, equivalent to U.S. EPA Tier 2 Option 2 - Brazil MAR-1, emitting equivalent to U.S. EPA Tier 3/EU Stage IIIA -
Engine Power - ISO 14396:2002 786 hp 275 hp -
Gross Power - SAE J1995:2014 766 hp 286 hp -
Net Power - SAE J1349:2011 - High Ambient 648 hp - -
Engine Power - ISO 14396: 2002 752 hp 275 hp -
Bore 5.4 in 4.1 in -
Stroke 6 in 5.3 in -
Displacement 1649.5 in³ 427.8 in³ -
Peak Torque - Speed 2624 lb/ft - -
Torque Rise 18 % 26 % -
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 - 249 hp -
Net Power - ISO 9249:2007 - 249 hp -
Peak Torque (1400 rpm) - 902 lbf·ft -
Peak Torque ( 1,400 rpm ) - 749 lbf·ft -
High Idle Speed - 2270 r/min -
Low Idle Speed - 800 r/min -
Maximum Altitude without Derating - 9842.5 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. -

Operating Specifications

Operating Weight 165089 lb - -
Blade Capacity Range 20.8 yd³ - -
Operating Weight (Tier 4 Final/Stage V) - 48526 lb -
Operating Weight (Tier 3/Stage IIIA equivalent) - 47887 lb -

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 - -
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. - -
Forward - 1 - 3.7 mile/h -
Forward - 2 - 6.5 mile/h -
Forward - 3 - 11.2 mile/h -
Forward - 4 - 19.4 mile/h -
Reverse - 1 - 4.2 mile/h -
Reverse - 2 - 7.3 mile/h -
Reverse - 3 - 12.8 mile/h -
Reverse - 4 - 22.1 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) 120 mm × 915 mm (4.7 in × 36.0 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 load sensing valve with EH -
Lift/Tilt System - Variable displacement piston -
Maximum Flow at 2,200 rpm - 23.5 gpm -
Relief Valve Setting - Lift/Tilt - 3190 psi -
Cylinders, Double Acting - Left and Right Tilt, Bore and Stroke - 101.6 mm × 234 mm (4.0 in × 9.2 in) -
Pilot System - Open center, fixed displacement gear -
Pilot Relief Valve Setting - 3046 psi -

Hydraulic System - Steering

Steering System - Circuit Pilot, load sensing Pilot, load sensing -
Steering System - Pump Piston, variable displacement Variable displacement piston -
Minimum Turning Radius - Over Blade 34 ft - -
Total Steering Angle 35 ° 72° -
Maximum Flow 94.3 gpm - -
Relief Valve Setting 4500 psi - -
Maximum Flow at 2,200 rpm - 38.8 gpm -
Relief Valve Setting - Steering - 4003 psi -
Steering Cycle Times - High Idle - 3 s -
Steering Cycle Times - Low Idle - 8.2 s -

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) 13.2 gal (US) -
Differential - Final Drives - Front 71.6 gal (US) 17.2 gal (US) -
Differential - Final Drives - Rear 68.9 gal (US) 17.2 gal (US) -
Hydraulic System - Implement and Hydraulic Fan 68.9 gal (US) - -
Hydraulic System - Steering and Braking 34.9 gal (US) - -
Fuel Tank - 132.1 gal (US) -
Diesel Exhaust Fluid Tank - 4.2 gal (US) -
Cooling Systems - Tier 4 Final/EU Stage V - 21.4 gal (US) -
Cooling Systems - Tier 3/Stage IIIA equivalent - 19.3 gal (US) -
Engine Crankcase - 5.3 gal (US) -
Hydraulic System - Implement/Steering - 34.1 gal (US) -
Hydraulic Tank Only - 19.8 gal (US) -
Note (1) - All nonroad Tier 4 Final and EU Stage V diesel engines are required to use: – Ultra low sulfur diesel (ULSD) fuels containing 15 ppm (mg/kg) sulfur or less. – Cat engines are compatible with the following renewable, alternative, and biodiesel* fuels that -

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 con -

Axles

Front Fixed Planetary – Fixed -
Rear Trunnion Planetary – Oscillating -
Oscillation Angle 8.5 ° ±10° -

Brakes

Brakes Meets ISO 3540:2011 - -

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) 111 dB(A) -
Operator Sound Pressure Level (ISO 6396:2008)* 72 dB(A) 70 dB(A) -
Machine Sound Power Level (ISO 6395:2008)* 114 dB(A) 109 dB(A) -
Note (1) *Sound suppression equipped * 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. The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 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. The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 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. 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 11.3 ft -
Height - Top of Hood 12.7 ft 8.7 ft -
Ground Clearance 2 ft - -
Centerline of Front Axle to Hitch 7.5 ft 5.5 ft -
Centerline of Rear Axle to Edge of Bumper 12.5 ft - -
Wheel Base 15.1 ft 11 ft -
Length - With Blade on Ground 36.5 ft - -
Height to Top of Beacon - 13.1 ft -
Height - Top of Cab - 12.1 ft -
Height to Top of Radiator Guard - 8 ft -
Ground Clearance to Hitch - 1.4 ft -
Ground Clearance to Transmission Guard - 1.4 ft -
Ground Clearance to Bottom of Bumper - 2.3 ft -
Centerline of Rear Axle to Bumper - 6.5 ft -
Width over Platform - 10.3 ft -
Overall Length to Front Tire - 21 ft -
Overall Machine Length with Straight Blade - 23.6 ft -
Overall Machine Length with Coal Blade - 25.5 ft -

Braking System

Service Brakes - Single Disc Wet (enclosed) 4 WHL -
Parking Brake - Drum and Shoe, Spring Applied, Hydraulic Released -

Sound Performance - Tier 3 / Stage IIIA

Operator Sound Pressure Level (ISO 6396:2008) - 72 dB(A) -
Machine Sound Power Level (ISO 6395:2008) - 112 dB(A) -
Operator Sound Pressure Level (ISO 6396:2008)* - 70 dB(A) -
Machine Sound Power Level (ISO 6395:2008)* - 110 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 maximum engine cooling fan speed. -
Note (3) - The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 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. -

Straight Blade

Capacity - 3.72 yd³ -
Overall Width - 12 ft -
Height - 3.3 ft -
Dig Depth - 1.6 ft -
Ground Clearance - 3 ft -
Maximum Tilt - 2.6 ft -
Turning Radius – Outside Corner of Blade - 23.5 ft -
Turning Radius – Inside Corner of Blade - 11.6 ft -
Weight - 3000 lb -
Total Operating Weight - 48526 lb -

Coal Blade

Capacity - 13.8 yd³ -
Overall Width - 14.2 ft -
Height - 4.8 ft -
Dig Depth - 1.6 ft -
Ground Clearance - 3.1 ft -
Maximum Tilt - 3.1 ft -
Turning Radius – Outside Corner of Blade - 25.1 ft -
Turning Radius – Inside Corner of Blade - 11.2 ft -
Weight - 4429 lb -
Total Operating Weight - 49996 lb -
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