Description
Wheel Dozers
844
Engine Model
C27 Cat®
Rated Speed
1800.0 r/min
Gross Power – ISO 14396
561.0 kW
SPECIFICATIONS
Cat Wheel Dozers are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a lower cost per ton. Engineered for your demanding work in large dozing applications, the 844 Wheel Dozer is the largest in the Cat Wheel Dozer line and is an ideal match for large mining operations, power generating utilities, the general contracting industry and wherever mobility, versatility and compaction is needed.
Specifications
Engine Model
C27 Cat®
Rated Speed
1800.0 r/min
Gross Power - ISO 14396
561.0 kW
Gross Power - SAE J1995:2014
571.0 kW
Net Power - SAE J1349 - Standard Ambient
521.0 kW
Net Power - SAE J1349 - High Ambient
483.0 kW
Bore
137.2 mm
Stroke
152.4 mm
Displacement
27.03 l
Peak Torque - Speed
3557.0 N·m
Torque Rise
18.0 %
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
Operating Weight
74883.0 kg
Blade Capacities
15.9 – 30.7 m3 (20.7 – 40.2 yd3)
Transmission Type
Cat Planetary Power Shift
Converter Drive - Forward 1
7.3 km/h
Converter Drive - Forward 2
13.3 km/h
Converter Drive - Forward 3
22.9 km/h
Converter Drive - Reverse 1
7.9 km/h
Converter Drive - Reverse 2
14.7 km/h
Converter Drive - Reverse 3
24.9 km/h
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 2
13.7 km/h
Direct Drive - Forward 3
24.5 km/h
Direct Drive - Reverse 1
8.7 km/h
Direct Drive - Reverse 2
15.4 km/h
Direct Drive - Reverse 3
26.4 km/h
Output at 2,000 rpm and 6900 kPa (1,000 psi)
311.0 l/min
Cylinders, Double Acting - Lift, Bore and Stroke
133 mm × 1535 mm (5.25 in × 60.4 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)
18650.0 kPa
Relief Valve Setting - Tilt Cylinders (Small Pump)
20150.0 kPa
Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Minimum Turning Radius - Over Blade
10369.0 mm
Total Steering Angle
35.0 °
Maximum Flow
357.0 l/min
Relief Valve Setting
31000.0 kPa
Fuel Tank - Standard
1085.0 l
Cooling System
208.0 l
Crankcase
76.0 l
Transmission
110.0 l
Differential - Final Drives - Front
271.0 l
Differential - Final Drives - Rear
261.0 l
Hydraulic System - Implement and Hydraulic Fan
261.0 l
Hydraulic System - Steering and Braking
132.0 l
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
Rear
Trunnion
Oscillation Angle
8.5 °
Brakes
Meets ISO 3540:2011
Operator Sound Level (ISO 6396:2008)
69.0 dB(A)
Machine Sound Level (ISO 6395:2008)
115.0 dB(A)
Operator Sound Level (ISO 6396:2008)
69.0 dB(A)
Machine Sound Level (ISO 6395:2008)
113.0 dB(A)
ROPS/FOPS
ISO 3471:2008 and ISO 3449:2005 Level II Standards
Height - Top of ROPS
5240.0 mm
Height - Top of Exhaust Pipe
5049.0 mm
Height - Top of Hood
3862.0 mm
Ground Clearance
596.0 mm
Centerline of Front Axle to Hitch
2300.0 mm
Centerline of Rear Axle to Edge of Bumper
3795.0 mm
Wheel Base
4600.0 mm
Length - With Blade on Ground
11120.0 mm
Features
Long Term Value and Durability
Move More with Less Fuel
Safety First
Technology that Gets Work Done
Work In Comfort
Reduce Environmental Impact
Save on Service and Maintenance
Purpose-Built Cat Attachments
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
NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
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)
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
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
TRAMMING
- Fenders, steel (front)
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
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)
Why choose RIMCO Barbados
Quality
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Exceptional Service
Expect the best and count on us with our full service and support to ensure your equipment’s performance and longevity.
All Emcompassing
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