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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Operating Specifications
- Nominal Payload Class (100%)
- 61 ton (US)
- Top Speed - Loaded
- 41.6 mile/h
- Target Payload (100%)
- 61 ton (US)
- Body Capacity - SAE 2:1
- 46.8 yd³
- Note (1)
- Capacity with Dual Slope body – no liner.
- Maximum Working Payload (110%)
- 67.1 ton (US)
- Note (2)
- * Refer to the Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations.
- Maximum Allowable Payload (120%)*
- 73.2 ton (US)
Engine
- Engine Model
- Cat® C27
- Rated Engine Speed
- 1,800 r/min
- Gross Power - SAE J1995
- 775 HP
- Net Power - SAE J1349
- 719 HP
- Net Power - ISO 9249
- 762 HP
- Net Power - 80/1269/EEC
- 762 HP
- Bore
- 5.4 in
- Stroke
- 6 in
- Displacement
- 1,648 in³
- Net Torque
- 3,148 ft-lb
- Peak Torque - Speed
- 1,200 r/min
- Engine Power - ISO 14396
- 764 HP
- Note (1)
- Power rating applies at 2,000 rpm when tested under the specified condition for the specified standard.
- Note (3)
- No engine derating required up to 3,048 m (10,000 ft) for Tier 4/Stage V.
- Note (2)
- Ratings based on SAE J1,995 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).
Capacity - Dual Slope - 100% Fill Factor
- Struck
- 35.13 yd³
- Heaped (SAE 2:1)*
- 46.76 yd³
- Note (2)
- * ISO 6,483:1,980.
- Note (1)
- Contact your local Cat dealer for body recommendation.
Capacity - Flat Floor - 100% Fill Factor
- Struck
- 34.33 yd³
- Heaped (SAE 2:1)*
- 46.41 yd³
- Note (2)
- * ISO 6,483:1,980.
- Note (1)
- Contact your local Cat dealer for body recommendation.
Weight Distributions - Approximate
- Front Axle - Empty
- 53 %
- Front Axle - Loaded
- 35 %
- Rear Axle - Empty
- 47 %
- Rear Axle - Loaded
- 65 %
Transmission
- Forward - 1
- 6.6 mile/h
- Forward - 2
- 9.3 mile/h
- Forward - 3
- 12.6 mile/h
- Forward - 4
- 16.8 mile/h
- Forward - 5
- 22.8 mile/h
- Forward - 6
- 30.7 mile/h
- Forward - 7
- 41.6 mile/h
- Reverse
- 8.7 mile/h
- Note
- Maximum travel speeds with standard 24.00R35 (E4) tires.
Final Drives
- Differential Ratio
- 3.64:1
- Planetary Ratio
- 4.80:1
- Total Reduction Ratio
- 17.49:1
Brakes
- Brake Surface - Front
- 257 in²
- Brake Surface - Rear
- 9,497 in²
- Brake Standards
- ISO 3,450:2,011
Service Refill Capacities
- Fuel Tank
- 210 gal (US)
- Cooling System
- 45 gal (US)
- Differential - Final Drives
- 38 gal (US)
- Steering Tank
- 9.5 gal (US)
- Steering System - Including Tank
- 14 gal (US)
- Torque Converter - Transmission System - HRC
- 18 gal (US)
- Crankcase
- 24 gal (US)
- Brake Hoist System
- 85 gal (US)
- Brake/Hoist Hydraulic Tank
- 46.5 gal (US)
Body Hoists
- Pump Flow - High Idle
- 118 gal/min
- Relief Valve Setting - Raise
- 2,502 psi
- Relief Valve Setting - Lower
- 500 psi
- Body Raise Time - High Idle
- 10 s
- Body Lower Time - Float
- 14 s
- Body Power Down - High Idle
- 14 s
Suspension
- Rear axle - Oscillation
- 8.1 °
- Empty Loaded Cylinder Stroke Rear
- 5.8 in
- Empty Loaded Cylinder Stroke Front
- 9.2 in
Tires
- Note (2)
- Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection.
- 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.
- Standard Tire
- 24.00R35 (E4)
ROPS
- FOPS Standards
- Falling Object Protective Structure (FOPS) meets ISO 3,449:2,005 Level II FOPS criteria.
- ROPS Standards
- Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3,471:2,008 ROPS criteria.
Sound
- 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.
- 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 J88:2,008, mid‑gear moving operation is 86 dB(A).
- Sound Standards (1)
- The operator Equivalent Sound Pressure Level (Leq) is 76 dB(A) when SAE J1,166 FEB2,008 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
Steering
- Turning Diameter - Front
- 77.1 ft
- Steering Standards
- SAE J1,511 FEB94 ISO 5,010:1,992
- Steer Angle
- 31 °
- Turning Circle - Clearance Diameter
- 85.6 ft
Weights - Approximate
- Maximum Gross Vehicle Weight
- 226,501 lb
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
- Cat C27 Tier 4/Stage V compliant diesel engine:
-
- 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
- Advisor display:
-
- 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)
Specifications
Operating Specifications
- Nominal Payload Class (100%)
- 61 ton (US)
- Top Speed - Loaded
- 41.6 mile/h
- Target Payload (100%)
- 61 ton (US)
- Body Capacity - SAE 2:1
- 46.8 yd³
- Note (1)
- Capacity with Dual Slope body – no liner.
- Maximum Working Payload (110%)
- 67.1 ton (US)
- Note (2)
- * Refer to the Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations.
- Maximum Allowable Payload (120%)*
- 73.2 ton (US)
Engine
- Engine Model
- Cat® C27
- Rated Engine Speed
- 1,800 r/min
- Gross Power - SAE J1995
- 775 HP
- Net Power - SAE J1349
- 719 HP
- Net Power - ISO 9249
- 762 HP
- Net Power - 80/1269/EEC
- 762 HP
- Bore
- 5.4 in
- Stroke
- 6 in
- Displacement
- 1,648 in³
- Net Torque
- 3,148 ft-lb
- Peak Torque - Speed
- 1,200 r/min
- Engine Power - ISO 14396
- 764 HP
- Note (1)
- Power rating applies at 2,000 rpm when tested under the specified condition for the specified standard.
- Note (3)
- No engine derating required up to 3,048 m (10,000 ft) for Tier 4/Stage V.
- Note (2)
- Ratings based on SAE J1,995 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).
Capacity - Dual Slope - 100% Fill Factor
- Struck
- 35.13 yd³
- Heaped (SAE 2:1)*
- 46.76 yd³
- Note (2)
- * ISO 6,483:1,980.
- Note (1)
- Contact your local Cat dealer for body recommendation.
Capacity - Flat Floor - 100% Fill Factor
- Struck
- 34.33 yd³
- Heaped (SAE 2:1)*
- 46.41 yd³
- Note (2)
- * ISO 6,483:1,980.
- Note (1)
- Contact your local Cat dealer for body recommendation.
Weight Distributions - Approximate
- Front Axle - Empty
- 53 %
- Front Axle - Loaded
- 35 %
- Rear Axle - Empty
- 47 %
- Rear Axle - Loaded
- 65 %
Transmission
- Forward - 1
- 6.6 mile/h
- Forward - 2
- 9.3 mile/h
- Forward - 3
- 12.6 mile/h
- Forward - 4
- 16.8 mile/h
- Forward - 5
- 22.8 mile/h
- Forward - 6
- 30.7 mile/h
- Forward - 7
- 41.6 mile/h
- Reverse
- 8.7 mile/h
- Note
- Maximum travel speeds with standard 24.00R35 (E4) tires.
Final Drives
- Differential Ratio
- 3.64:1
- Planetary Ratio
- 4.80:1
- Total Reduction Ratio
- 17.49:1
Brakes
- Brake Surface - Front
- 257 in²
- Brake Surface - Rear
- 9,497 in²
- Brake Standards
- ISO 3,450:2,011
Service Refill Capacities
- Fuel Tank
- 210 gal (US)
- Cooling System
- 45 gal (US)
- Differential - Final Drives
- 38 gal (US)
- Steering Tank
- 9.5 gal (US)
- Steering System - Including Tank
- 14 gal (US)
- Torque Converter - Transmission System - HRC
- 18 gal (US)
- Crankcase
- 24 gal (US)
- Brake Hoist System
- 85 gal (US)
- Brake/Hoist Hydraulic Tank
- 46.5 gal (US)
Body Hoists
- Pump Flow - High Idle
- 118 gal/min
- Relief Valve Setting - Raise
- 2,502 psi
- Relief Valve Setting - Lower
- 500 psi
- Body Raise Time - High Idle
- 10 s
- Body Lower Time - Float
- 14 s
- Body Power Down - High Idle
- 14 s
Suspension
- Rear axle - Oscillation
- 8.1 °
- Empty Loaded Cylinder Stroke Rear
- 5.8 in
- Empty Loaded Cylinder Stroke Front
- 9.2 in
Tires
- Note (2)
- Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection.
- 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.
- Standard Tire
- 24.00R35 (E4)
ROPS
- FOPS Standards
- Falling Object Protective Structure (FOPS) meets ISO 3,449:2,005 Level II FOPS criteria.
- ROPS Standards
- Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3,471:2,008 ROPS criteria.
Sound
- 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.
- 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 J88:2,008, mid‑gear moving operation is 86 dB(A).
- Sound Standards (1)
- The operator Equivalent Sound Pressure Level (Leq) is 76 dB(A) when SAE J1,166 FEB2,008 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
Steering
- Turning Diameter - Front
- 77.1 ft
- Steering Standards
- SAE J1,511 FEB94 ISO 5,010:1,992
- Steer Angle
- 31 °
- Turning Circle - Clearance Diameter
- 85.6 ft
Weights - Approximate
- Maximum Gross Vehicle Weight
- 226,501 lb
Standard/Optional Features
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
- Cat C27 Tier 4/Stage V compliant diesel engine:
-
- 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
- Advisor display:
-
- 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)