844 Wheel Dozer | gregorypoole

Bore	5.4in
Displacement	1649.5in³
Emissions	U.S. EPA Tier 4 Final and EU Stage V or China Nonroad Stage III Emissions standards, equivalent to U.S. EPA Tier 2
Engine Model	C27 Cat®
Gross Power - ISO 14396	752hp
Gross Power - SAE J1995:2014	766hp
Net Power - SAE J1349 - High Ambient	648hp
Net Power - SAE J1349 - Standard Ambient	699hp
Peak Torque - Speed	2624lb/ft
Rated Speed	1800r/min
Stroke	6in
Torque Rise	18%

Blade Capacities	15.9 - 30.7 m3 (20.7 - 40.2 yd3)
Operating Weight	165089lb

Converter Drive - Forward 1	4.5mile/h
Converter Drive - Forward 2	8.3mile/h
Converter Drive - Forward 3	14.2mile/h
Converter Drive - Reverse 1	4.9mile/h
Converter Drive - Reverse 2	9.1mile/h
Converter Drive - Reverse 3	15.5mile/h
Direct Drive - Forward 1	Lock-up disabled
Direct Drive - Forward 2	8.5mile/h
Direct Drive - Forward 3	15.2mile/h
Direct Drive - Reverse 1	5.4mile/h
Direct Drive - Reverse 2	9.6mile/h
Direct Drive - Reverse 3	16.4mile/h
Transmission Type	Cat Planetary Power Shift

Cylinder, Double Acting - Tilt and Tip, Bore and Stroke	210 mm × 188 mm (8.25 in × 7.4 in)
Cylinders, Double Acting - Lift, Bore and Stroke	133 mm × 1535 mm (5.25 in × 60.4 in)
Output at 2,000 rpm and 6900 kPa (1,000 psi)	82gal/min
Relief Valve Setting - Bulldozer (Large Pump)	2700psi
Relief Valve Setting - Tilt Cylinders (Small Pump)	2920psi

Maximum Flow	94.3gal/min
Minimum Turning Radius - Over Blade	34ft
Relief Valve Setting	4500psi
Steering System - Circuit	Pilot, load sensing
Steering System - Pump	Piston, variable displacement
Total Steering Angle	35°

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

Air Conditioning	The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes.

Front	Fixed
Oscillation Angle	8.5°
Rear	Trunnion

Brakes	Meets ISO 3540:2011

Machine Sound Level (ISO 6395:2008)	115dB(A)
Operator Sound Level (ISO 6396:2008)	69dB(A)

Machine Sound Level (ISO 6395:2008)	113dB(A)
Operator Sound Level (ISO 6396:2008)	69dB(A)

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

Centerline of Front Axle to Hitch	7.5ft
Centerline of Rear Axle to Edge of Bumper	12.5ft
Ground Clearance	2ft
Height - Top of Exhaust Pipe	16.6ft
Height - Top of Hood	12.7ft
Height - Top of ROPS	17.2ft
Length - With Blade on Ground	36.5ft
Wheel Base	15.1ft

Standard Equipment:

Note
- Standard and optional equipment may vary. Consult your Cat dealer for details.
Operator Environment
- Air conditioner and heater with automatic temperature control
- Cab, sound-suppressed pressurized, protective structure (ROPS/FOPS), radio ready for (entertainment) includes antenna, speakers and converter (12V, 10-15 amp)
- 12V power port for mobile phone or laptop connection
- Cigar lighter and ashtray
- Coat hook
- Electro-hydraulic blade controls (joystick)
- Flip-up armrest
- Heater and defroster
- Horn, electric
- Instrumentation, gauges: - Engine coolant temperature - Fuel level - Ground speed - Gear - Hydraulic oil temperature - Speedometer/tachometer - Torque converter temperature
- 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
- Keypad, control with indicator lights: - Auto trans mode speed range - Auto/manual transmission mode - Lockup clutch - Reduced rimpull - Throttle lock
- Light, dome (cab)
- Lunchbox and beverage holders
- Mirrors, rearview (externally mounted)
- 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
- STIC control system with steering lock
- Tinted glass
- Wet-arm wipers/washers (front, rear and corner) intermittent front wiper
- Converter (12V, 10/15 amp) and power port
Power Train
- Brakes, oil cooled, multi-disc, service/secondary
- Axle-shaft oil-disc service brake
- Electro hydraulic parking brake
- Cat clean emission module (Tier 4 only)
- Demand fan
- Engine Cat C27
- Fuel priming pump (electric)
- Ground level engine shutoff
- Mufflers (under hood) (Tier 2 only)
- Precleaner, engine air intake
- Radiator, Aluminum Modular (AMR)
- Separated cooling system
- Starting aid, (ether) automatic
- Throttle Lock electronic
- Torque Converter, Impeller Clutch with lock-up clutch feature and rimpull control system
- Transmission, 534 mm (21 in) planetary power shift (electronic) (3F/3R)
Electrical
- Alternator, 150 amp
- Batteries, maintenance free (4 - 1,400 CCA)
- Deutsch terminal connectors
- Electrical system, 24V
- Electronic transmission control
- Lighting system, halogen (front and rear) lighting, access stairway, engine compartment
- Starting and charging system, 24V
- Starter lockout in bumper
- Starting receptacle for emergency start
- Transmission lockout in bumper
Service
- Vital Information Management System (VIMS) 3G with graphical information display: external data port, customizable operator profiles
- Case drain filters
- Coupling, Caterpillar O-ring face seals
- Guards, crankcase and power train
- Hitch, drawbar with pin
- Hoses, Cat XT
- Oil sampling valves
- Product Link^™
Safety
- Camera, rear vision
- Implement lockout switch
- Seat belt, retractable, 76 mm (3 in) wide
- Trainer seat with lap belt
- Alarm, back-up
- Emergency platform egress
- Stairway, left and right rear access
- Steering, secondary
- Toe kicks
Tramming
- Fenders, steel (front)
Other
- Axle temperature sensor
- Battery disconnect and jump start receptacle, bumper
- Economy mode with on demand throttle
- Engine, crankcase, 500 hour interval with CH4
- Engine idle management features: - Auto idle kickdown - Delayed engine shutdown - Engine idle shutdown
- Grouped/labeled lube points
- Positive flow control hydraulic system
- Sight Gauges: hydraulic tanks, steering/fan and implement/brake, and transmission
- Steering, load sensing
- Vandalism protection caplocks
- Premixed 50% concentration of extended life coolant with freeze protection to -34° C (-29° F)

Optional Equipment:

Note
- Standard and optional equipment may vary. Consult your Cat dealer for details.
Power Train
- 50° C (-58° F) antifreeze
- Engine oil change system, high speed, Wiggins
- Engine block heater 120V or 240V
- High ambient cooling - software
Blades
- Semi-U - 17.8 m3 (23.3 yd3)
- HD Semi-U - 16.1 m3 (21.1 yd3)
- Coal - 30.7 m3 (40.2 yd3)
Operator Environment
- Cab precleaner
- AM/FM/MP3 radio
- Satellite Sirius radio with Bluetooth
- LED warning strobe
- CB radio ready
- Window sun shade
Tramming
- Front and rear roading fenders
Miscellaneous Attachments
- Fast fill fuel system (Shaw-Aero)
- Axle oscillation stop
- Paint, black blade rear
Other
- Venturi stack

What Our Customers Are Saying About Us

Gregory Poole Equipment Company

3.9

Based on 46 reviews

review us on

Renee Herndon

21:55 29 Feb 24

Dalton was very helpful, The road construction, however, was not! 😂I would rather have to sand paper an alligators @$$ in a phone booth that to get in that mess again.