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773 (05)

773 (05)

Time proven iron and modern technology combine to provide a highly productive, durable and reliable off-highway truck focused on our customers greatest need…lowest cost-per-ton.

Nominal Payload Class (100%) 59.1 t
Engine Model Cat® 3412E
Top Speed - Loaded 67.8 km/h

Technicial Specifications

Operating Specifications
Nominal Payload Class (100%) 59.1 t
Top Speed - Loaded 67.8 km/h
Engine Model Cat® 3412E
Rated Engine Speed 2000 r/min
Gross Power - SAE J1995 567 kW
Net Power - SAE J1349 537 kW
Number of Cylinders 12
Torque Rise 33 %
Bore 137 mm
Stroke 152 mm
Displacement 27 l
Note (1) These engine ratings apply at 2,000 rpm when tested under the specified condition for the specified standard in effect at the time of manufacture.
Note (2) Power rating conditions based on standard conditions of 25° C (77° F) and99 kPa (29.32 in Hg) dry barometer, using 35° C (95° F) API gravity fuel havingan LHV of 42 780 kJ/kg (18,390 Btu/lb) when used at 30° C (86° F) [referencea fuel density of 838.9 g/L (7.001 lb/gal)].
Note (3) Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, muffler, and alternator.
Note (4) No engine derating required up to 3048 m (10,000 ft).
Note (5) Meets China Nonroad Stage III emission standards equivalent to Tier 2.
Weights - Approximate
Target Gross Machine Operating Weight 99300 kg
Operating Weight - Empty 40192 kg
Operating Weight - Loaded 59108 kg
Note (1) Does not include Liner.
Note (2) Empty operating weight may vary based on the machine configuration. Refer to Off-Highway Truck Payload Policy.
ROPS Standards (1) Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 for operator and ISO 13459:2012 for trainer.
FOPS Standards Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria for operator and ISO 13459:2012 Level II criteria for trainer.
Note (1) The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 2.4 kg (5.29 Ibs) of refrigerant, which has a CO2 equivalent of 3.43 metric tonnes (3.78 tons).
Standard Tire 24.00-R35 (E4)
Note (1) Productive capabilities of the 773 truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production.
Note (2) Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection.
Sound Standards ISO 6393:2008, SAE J1166:2008
Note (1) For cab offered by Caterpillar, the operator sound exposure Leq (Equivalent Sound Pressure Level) is 80 dB(A) when measured according to work cycle procedures specified in SAE J1166:2008. This occurs when the cab is properly installed and maintained. The test was conducted with doors and windows closed.
Note (2) Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.
Capacity - Dual Slope - 100% Fill Factor
Struck 26.6 m³
Heaped 2:1 (SAE) 35.2 m³
Note (1) ISO 6483:1980
Note (2) Contact your local Cat dealer for body recommendation.
Weight Distributions - Approximate
Front Axle - Empty 46.6 %
Front Axle - Loaded 33.8 %
Rear Axle - Empty 53.4 %
Rear Axle - Loaded 66.2 %
Forward - 1 10.8 km/h
Forward - 2 15.1 km/h
Forward - 3 20.4 km/h
Forward - 4 27.4 km/h
Forward - 5 37 km/h
Forward - 6 50 km/h
Forward - 7 67.8 km/h
Reverse 13.1 km/h
Note Maximum travel speeds with standard 24.00R35 (E4) tires.
Final Drives
Differential Ratio 3.64:1
Planetary Ratio 4.8:1
Total Reduction Ratio 17.48:1
Brake Surface - Front 1395 cm²
Brake Surface - Rear 61269 cm²
Brake Standards ISO 3450: 2011
Service Refill Capacities
Fuel Tank 700 l
Cooling System 122 l
Differential - Final Drives 155 l
Steering Tank 34 l
Steering System - Including Tank 60 l
Torque Converter - Brake - Hoist Hydraulic Tank 133 l
Brake Hoist System - Includes Tank 307 l
Torque Converter - Transmission System - Including Sump 72 l
Torque Converter - Transmission System 53 l
Crankcase 68 l
Body Hoists
Pump Flow - High Idle 562 l/min
Relief Valve Setting - Raise 17225 kPa
Relief Valve Setting - Lower 3445 kPa
Body Raise Time - High Idle 9.5 s
Body Lower Time - Float 12.5 s
Note (1) Twin, two-stage hydraulic cylinders mounted outside the main frame; double acting cylinders in second stage.
Note (2) Power raise in both stages and power down in second stage.
Effective Cylinder Stroke - Front 234 mm
Effective Cylinder Stroke - Rear 149 mm
Rear axle - Oscillation 8.1 °
Approximate Weights - Dual Slope
Chassis 30219 kg
Gross Vehicle 99300 kg
Turning Diameter - Front 22 m
Steering Standards Steering Standards Meets ISO 5010:2007
Steer Angle 31 °
Turning Circle - Clearance Diameter 25 m
Height - Top of ROPS 4000 mm
Overall Body Length 8535 mm
Inside Body Length 6400 mm
Overall Length 9120 mm
Wheel Base 4191 mm
Rear Axle - Tail 2782 mm
Ground Clearance 566 mm
Dump Clearance 676 mm
Loading Height - Empty 3773 mm
Inside Body Depth - Maximum 1805 mm
Overall Height - Body Raised 8787 mm
Operating Width 5076 mm
Centerline Front Tire Width 3275 mm
Engine Guard Clearance 667 mm
Overall Canopy Width 4393 mm
Outside Body Width 3910 mm
Inside Body Width 3658 mm
Front Canopy Height 4393 mm
Rear Axle - Clearance 591 mm
Centerline of Rear Dual Tire Width 2927 mm
Overall Tire Width 4457 mm

Advantages and Features


  • Productivity improvement up to 7%.
  • Up to 3% increase in torque puts more power to the ground.
  • ​​​Various body options, along with liners and sideboard combinations, offer flexibility to move a wide density of material without compromising on payload.
  • Machine speed limit feature allows the machine to run at an optimal gear for the selected speed.


  • Standard economy mode provides maximum fuel savings with minimal productivity impact.
  • Haul your truck at a more fuel-efficient engine speed and gear selection with speed limiting.
  • Engine Idle Shutdown automatically initiates when the truck is in park and idles for a preset amount of time—conserving fuel.
  • Built with the same reliable Cat® 3412E air-to-air aftercooled engine, featuring Hydraulic Electronic Unit Injector (HEUI™) forcefficient operation.
  • Deliver reliable performance in the most extreme haul-road conditions with the Cat front dry caliper and rear oil-cooled multiple disc brakes.


  • Ground level access to the machine shutoff switch stops all fuel to the engine when activated, shutting down the machine.
  • Safe ground level access to daily maintenance points means less servicing time is required.
  • Overload speed limiter works with truck payload system to reduce machine speed automatically when the truck is overloaded.
  • Equipped with a retractable four-point seat belt and a shoulder harness to improve operator safety.
  • Seat belt indicator implements both visual and audible alerts to the operator when seat belt is not fastened.
  • Secondary steering automatically engages if the power source for the normal steering fails.
  • Save on fuel costs with Engine Overspeed Protection— electronically senses the engine condition and automatically upshifts one gear to prevent engine overspeed.


  • Completely redesigned cab interior for a whole new standard in visibility, comfort, and productivity.
  • Enjoy a more automotive-like, all-in-one integrated parking brake.
  • Intuitive, ergonomic controls and multifunction display keep operators focused on their work.
  • Designed for precise steering, Cat integrated steering and suspension system provides excellent maneuverability, minimal tire wear, and superior ride control.


  • Second gear reweigh improves accuracy of the haul as it recalculates the payload.
  • Instrumentation and Advisor system provide a three-category warning system and quick access to stored diagnostic data.
  • Product Link™ system connects to each machine wirelessly, allowing you to monitor location, hours, fuel use, productivity, idle time, and diagnostic codes.
  • Vital Information Management System (VIMS™ ) – User-friendly interface monitor is available in the cabin to monitor key parameters of the machine.
  • Truck Production Management System (TPMS) provides accurate weighing of the materials, stores 2,400 payload cycles, and reports on weights, haul cycle times, and distances with date and time stamps (optional attachment).


  • Build operator confidence with Automatic Retarder Control (ARC), providing excellent control while reducing operator effort for a smoother ride.
  • Enjoy better productivity with a more responsive Traction Control System, improves control in poor underfoot conditions.
  • Standard wet disc braking on rear wheels offers extra protection and enhanced safety.
  • Prevent any slippage with an integrated park brake for slope holding capability.


  • Safe, convenient maintenance with a machine platform and groundlevel battery disconnect.
  • The Advisor system provides quick, onboard diagnostic data and lowers operating costs.
  • Rugged cylinders use a large diameter bore and a low-pressure nitrogen/oil design for long life with minimal maintenance.
  • Traction Control System (TCS) engages sooner in the slip, extending tire life and cycle times.

Standard Equipment

  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Powertrain
    • Cat® 3412E HEUI™ engine: 12-cylinder diesel,air-to-air aftercooler (ATAAC), hydraulic electronic unit injection, air filter with precleaner (2), automatic cold mode idle control, turbocharger (2)
    • Extended life coolant to -35° C (-30° F)
    • Transmission: 7-speed automatic power shift with ICM control, body upshift inhibitor, controlled throttle shifting, directional shift management, downshift inhibitor, neutral coast inhibitor, neutral start switch, programmable top gear/speed selection, reverse neutralizer during dumping, reverse shift inhibitor
  • Electrical
    • Alarm, backup
    • Alternator, 115 ampere
    • Batteries, maintenance-free, 12V (2), 190 amp-hour
    • Electrical system, 24V
  • Brakes
    • Caliper disc (front)
    • Oil disc (rear)
    • Parking
    • Secondary
  • Cab, ROPS
    • Air filter service indicator
    • Air system pressure gauge
    • Insulated and sound-suppressed
    • Ashtray and cigarette lighter
    • Audiovisual seat belt reminder
    • Camera System
    • Sun visor
    • Coat hook, cup holder
    • Coolant temperature gauge
    • Diagnostic connection port
    • Engine overspeed indicator
    • Entertainment radio ready: speakers, antenna, wiring harness
    • Hoist lever
    • HVAC
    • Left side power window
    • Load counter, automatic: Advisor display
    • Mirrors, left and right
    • Right side access door
    • ROPS cab, insulated/sound suppressed
    • Seat, Cat Comfort, full air suspension and retractable four-point seat belt with shoulder harness
    • Seat, trainer with lap belt
    • Throttle lock
    • Tinted, laminated glass
    • Transmission oil temperature gauge
  • Gauges
    • Transmission gear indicator
    • Air pressure
    • Brake oil temperature
    • Coolant temperature
    • Fuel
    • Hour meter, electric
    • Odometer
    • Speedometer
    • Tachometer
  • Lighting system
    • Backup light (halogen)
    • Dome/courtesy light
    • Directional signals/hazard warning (front and rear LED)
    • Headlights (LED) with dimmer
    • Hazard lights (LED)
    • Stop/tail lights, LED
  • Reservoirs (separate)
    • Brake/hoist
    • Steering
    • Transmission/torque converter
  • Technology Products
    • Product Link™
  • Other
    • Airline dryer
    • Body down indicator
    • Body mounting group
    • Body safety pin (secures body in up position)
    • Center-mounted rims
    • Driveline guards, operator safety vandalism protection lock
    • Engine crankcase guards
    • Ground level battery disconnect
    • Ground level grease fittings
    • Hydro pneumatic suspension at front and rear
    • Parts manual — digital (QR)
    • Rock ejectors
    • Supplemental steering, automatic

Optional Equipment

  • Powertrain
    • Auto retarder control (ARC)
    • Traction Control System (TCS)
    • IBC (ARC &TCS)
  • Cab, ROPS
    • Fog lamp
    • Heated mirrors
  • Technology Products
    • Vital Information Management System (VIMS™)
    • Truck Payload Management System (TPMS)
  • Other
    • Automatic lubrication system
    • Body liner
    • Body sideboards
    • Cluster/grouped lubrication system
    • Cold weather package
    • Exhaust Muffler
    • Fast fluid fill system
    • Fire extinguisher
    • Fuel system, Fast fill
    • Guard, Turbocharger
    • Oil change system — high speed
    • Spare rim
    • Wheel Chocks