773G Off-Highway Truck

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The G Series represents a new era for Cat’s Off-Highway Trucks and the 773G provides our customers with a quality operating environment that enhances productivity and provides significant savings in fuel consumption, too. Ergonomically designed with an operator’s comfort in mind, the 773G has an updated cab with new comforts as well as controls conveniently placed within reach of the operator’s hands. Built with a Cat C27 diesel engine, this 60-ton payload uses increased torque delivering 5% additional horsepower. An ideal pass match for the 773G Off-Highway Truck is Cat’s 988K Wheel Loader, 990K Wheel Loader, or the 390F Hydraulic Excavator. Simply put, the 773G will make a positive difference in haul performance all day, every day for today and tomorrow’s work.

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Body Capacity - SAE 2:1 46.8yd³
Maximum Allowable Payload (120%)* 73.2ton (US)
Maximum Working Payload (110%) 67.1ton (US)
Nominal Payload Class (100%) 61ton (US)
Note (1) Capacity with Dual Slope body – no liner.
Note (2) * Refer to the Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations.
Target Payload (100%) 61ton (US)
Top Speed - Loaded 41.6mile/h
Bore 5.4in
Displacement 1648in³
Engine Model Cat® C27
Engine Power - ISO 14396 764HP
Gross Power - SAE J1995 775HP
Net Power - 80/1269/EEC 762HP
Net Power - ISO 9249 762HP
Net Power - SAE J1349 719HP
Net Torque 3148ft-lb
Note (1) Power rating applies at 2,000 rpm when tested under the specified condition for the specified standard.
Note (2) Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 100 kPa (29.61 Hg) barometer. Power based on fuel having API gravity of 35 at 16° C (60° F) and an LHV of 42 780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F).
Note (3) No engine derating required up to 3048 m (10,000 ft) for Tier 4/Stage V.
Peak Torque - Speed 1200r/min
Rated Engine Speed 1800r/min
Stroke 6in
Heaped (SAE 2:1)* 46.76yd³
Note (1) Contact your local Cat dealer for body recommendation.
Note (2) * ISO 6483:1980.
Struck 35.13yd³
Heaped (SAE 2:1)* 46.41yd³
Note (1) Contact your local Cat dealer for body recommendation.
Note (2) * ISO 6483:1980.
Struck 34.33yd³
Front Axle - Empty 53%
Front Axle - Loaded 35%
Rear Axle - Empty 47%
Rear Axle - Loaded 65%
Forward - 1 6.6mile/h
Forward - 2 9.3mile/h
Forward - 3 12.6mile/h
Forward - 4 16.8mile/h
Forward - 5 22.8mile/h
Forward - 6 30.7mile/h
Forward - 7 41.6mile/h
Note Maximum travel speeds with standard 24.00R35 (E4) tires.
Reverse 8.7mile/h
Differential Ratio 3.64:1
Planetary Ratio 4.80:1
Total Reduction Ratio 17.49:1
Brake Standards ISO 3450:2011
Brake Surface - Front 257in²
Brake Surface - Rear 9497in²
Brake Hoist System 85gal (US)
Brake/Hoist Hydraulic Tank 46.5gal (US)
Cooling System 45gal (US)
Crankcase 24gal (US)
Differential - Final Drives 38gal (US)
Fuel Tank 210gal (US)
Steering System - Including Tank 14gal (US)
Steering Tank 9.5gal (US)
Torque Converter - Transmission System - HRC 18gal (US)
Body Lower Time - Float 14s
Body Power Down - High Idle 14s
Body Raise Time - High Idle 10s
Pump Flow - High Idle 118gal/min
Relief Valve Setting - Lower 500psi
Relief Valve Setting - Raise 2502psi
Empty Loaded Cylinder Stroke Front 9.2in
Empty Loaded Cylinder Stroke Rear 5.8in
Rear axle - Oscillation 8.1°
Note (1) Productive capabilities of the 773G 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.
Standard Tire 24.00R35 (E4)
FOPS Standards Falling Object Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria.
ROPS Standards Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.
Sound Standards (1) The operator Equivalent Sound Pressure Level (Leq) is 76 dB(A) when SAE J1166 FEB2008 is used to measure the value for an enclosed cab. This is a work cycle sound exposure level. The cab was properly installed and maintained. The test was conducted with t
Sound Standards (2) The exterior sound pressure level for the standard machine measured at a distance of 15 m (49 ft) according to the test procedures specified in SAE J88:2008, mid‑gear moving operation is 86 dB(A).
Sound Standards (3) 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.
Steer Angle 31°
Steering Standards SAE J1511 FEB94 ISO 5010:1992
Turning Circle - Clearance Diameter 85.6ft
Turning Diameter - Front 77.1ft
Maximum Gross Vehicle Weight 226501lb

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Power Train
    • Cat C27 Tier 4/Stage V compliant diesel engine:
      – Air cleaner with precleaner (2)
      – Air-To-Air Aftercooler (ATAAC)
      – Electric start
      – Engine idle shutdown
      – Ether starting aid
      – Exhaust muffler
      – NGMR radiator
      For Tier 4 regions only (U.S./Canada):
      – Aftertreatment system
      • NOx Reduction System (NRS)
      • Diesel Oxidation Catalyst (DOC)

      – Demand fan
      – MEUI-C fuel system
    • Braking system:
      – Extended Life Brakes
      – Automatic Retarder Control (ARC)
      – Manual retarder (utilizes rear oil-cooled, multiple disc brakes)
      – Brake release motor (towing)
      – Dry disc brakes (front)
      – Front brake disconnect switch (front)
      – Oil-cooled multiple disc brakes (rear)
      – Brake wear indicator (rear)
      – Parking brake
      – Secondary brake
      – Service brake
    • Transmission:
      – 7-speed automatic powershift with:
      • Electronic Clutch Pressure Control (ECPC)
      • Advanced Productivity Electronic Control Strategy (APECS)

      – Automatic neutral idle
      – Autostall
      – Second gear start
  • Suspension Systems
    • Suspension, front and rear
  • Electrical
    • Alarm backup
    • Alternator, 120 Amp
    • Autolube power supply ready
    • Batteries, maintenance-free, 12V (2), 1,400 CCA combined
    • Electrical system, 25 Amp, 24V to 12V converter
    • Lighting system:
      – Backup light (halogen)
      – Directional signals/hazard warning (front and rear LED)
      – Engine compartment light
      – Headlights, (halogen) with dimmer
      – Operator access courtesy lights
      – Side profile lights
      – Stop/tail lights (LED)
    • Service center containing:
      – Battery jump start
      – Breakers with spare fuses
      – Lockout switch
      – Ports, ET and VIMS
      – Service lockout switch (power without engine start)
  • Technology Products
    • Economy Modes, standard and adaptive
    • Product Link, cellular or satellite
    • Traction Control System (TCS)
    • Truck Production Management System
    • Vital Information Management System (VIMS)
  • Operator Environment
    • Advisor display:
      – Air cleaner service indicator
      – Fluid level monitoring
      – Fuel level monitoring
      – Display languages (market-based)
    • Air conditioning/heat
    • Automatic temperature control
    • Ashtray and cigarette lighter
    • Coat hook
    • Cup holders (4)
    • Diagnostic connection port, 24V
    • Entertainment radio ready:
      – 5 amp converter
      – Speakers
      – Antenna
      – Wiring harness
    • Foot rest
    • Gauges/indicators:
      – Brake oil temperature gauge
      – Coolant temperature gauge
      – Engine overspeed indicator
      – Fuel level
      – Hour meter
      – Speedometer with odometer
      – Tachometer
      – Transmission gear indicator
    • Hoist lever
    • Horn
    • Light – courtesy
    • Light – dome
    • Mirrors, non-heated
    • Power port, 24V and 12V (2)
    • Rollover Protection (ROPS)/Falling Object Protection (FOPS)
    • Seat, Cat Comfort Series III:
      – Full air suspension
      – Retractable 3-point seat belt with shoulder harness
    • Seat, training with lap belt
    • Steering wheel, padded, tilt and telescopic
    • Storage compartment
    • Sun visor
    • Throttle lock
    • Window, hinged, right side (emergency exit)
    • Window, powered, left side
    • Windshield wiper intermittent and washer
  • Guards
    • Driveline
    • Engine crankcase
    • Fan
  • Fluids
    • Antifreeze
    • Extended life coolant to –34° C (–30° F)
    • Grouped ground-level filters
  • Other Standard Equipment
    • Body down indicator
    • Body safety pin (secures body in up position)
    • Center-mounted rims
    • Fuel tank, 795 L (210 gal)
    • Ground level battery disconnect
    • Ground level engine shutdown
    • Ground level grease fittings
    • Operator Maintenance Manual (OMM)
    • Rims 17 × 35
    • Rock ejectors
    • Secondary steering (electric)
    • Tie down eyes
    • Tow hooks (front)/tow pin (rear)
    • Vandalism protection locks

Optional Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Optional Equipment
    • Body heat
    • Body liner
    • Body sideboards
    • Cab precleaner
    • Cat Engine Brake
    • Clustered grease fittings
    • Cold weather packages
    • Fluid fill service center
    • HID lights
    • Mirrors, convex
    • Mirrors, heated
    • Spare rim
    • Visibility package (meets ISO 5006 requirements)
    • Wheel chocks
    • Work Area Vision System (WAVS)