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773 Off-Highway Truck

773 (07)

773 Off-Highway Truck

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The Cat® 773 Off-Highway Truck is engineered to help operations maximize productivity, reduce operating costs, and achieve reliable performance. Backed by advanced design, rigorous testing, and proven quality control processes, the 773 has accumulated more than 30,000 hours of customer validation to help deliver dependable performance from day one. Seven fuel-saving features and two customizable fuel economy modes help lower fuel consumption without compromising productivity. Combined with enhanced operator comfort, simplified serviceability, and improved environmental performance, the Cat 773 is built to meet the demands of today’s haulage operations. The result is a truck that delivers the efficiency, durability, and performance your business depends on every day.

Key Specs
Nominal Payload Class (100%) 71.6 ton (US)
Engine Model Cat® C27
Top Speed – Loaded 42 mile/h
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Product Specifications for 773 (07)

Nominal Payload Class (100%) 71.6 ton (US)
Top Speed – Loaded 42 mile/h
Note (2) * Refer to the Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations.
Body Capacity – SAE 2:1 46.75 yd³
Target Payload (100%) 61.7 ton (US)
Note (1) Capacity with Dual Slope body – no liner.
Maximum Allowable Payload (120%)* 74 ton (US)
Maximum Working Payload (110%) 67.8 ton (US)
Engine Model Cat® C27
Rated Engine Speed 1800 r/min
Gross Power – SAE J1995:2014 825 hp
Net Power – SAE J1349:2011 768 hp
Net Power – ISO 9249 768 hp
Net Torque Rise 40%
Bore 5.4 in
Stroke 6 in
Peak Torque – Speed 1200 r/min
Net Torque 2874 ft-lb
Net Torque – SAE J1349 3148 lbf·ft
Displacement 1648 in³
Note (1) The power ratings are tested at the reference conditions for the specified standard.
Note (2) Net power advertised is the power available at the rated speed, measured at the flywheel when the engine is equipped with alternator, air cleaner, muffler, and fan.
Note (3) MIN NET SAE J1349:2011/ISO 9249:2007 Net power advertised is the power available at the flywheel when the engine is equipped with fan at maximum speed, air intake system, exhaust system, and alternator.
Note (4) Net torque rise meets SAE J1349.
Struck 35.13 yd³
Note (1) Contact your local Cat dealer for body recommendation.
Heaped (SAE 2:1)* 46.76 yd³
Note (2) * ISO 6483:1980.
Struck 34.33 yd³
Heaped (SAE 2:1)* 46.41 yd³
Note (2) * ISO 6483:1980.
Note (1) Contact your local Cat dealer for body recommendation.
Front Axle – Empty 53 %
Front Axle – Loaded 35 %
Rear Axle – Empty 47 %
Rear Axle – Loaded 65 %
Forward – 1 6.7 mile/h
Forward – 2 9.4 mile/h
Forward – 3 12.7 mile/h
Forward – 4 17 mile/h
Forward – 5 23 mile/h
Forward – 6 31.1 mile/h
Forward – 7 42 mile/h
Reverse 8.8 mile/h
Note Maximum travel speeds with standard 24.00R35 (E4) tires.
Differential Ratio 3.64:1
Planetary Ratio 4.80:1
Total Reduction Ratio 17.49:1
Brake Surface – Front 257 in²
Brake Surface – Rear 9497 in²
Brake Standards ISO 3450:2011
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)
Brake/Hoist Hydraulic Tank 46.5 gal (US)
Crankcase 24 gal (US)
Brake Hoist System 85 gal (US)
Torque Converter – Transmission System – LRC 16 gal (US)
Pump Flow – High Idle 118 gpm
Relief Valve Setting – Raise 2502 psi
Relief Valve Setting – Lower 500 psi
Body Raise Time – High Idle 9.5 s
Body Lower Time – Float 13 s
Body Power Down – High Idle 13 s
Rear axle – Oscillation 8.1 °
Empty Loaded Cylinder Stroke Front 9.2 in
Empty Loaded Cylinder Stroke Rear 5.8 in
Maximum Gross Vehicle Weight 226503 lb
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 (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.
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
Turning Diameter – Front 77.1 ft
Steering Standards ISO 5010:2007
Steer Angle 31 °
Turning Circle – Clearance Diameter 85.6 ft
Standard Tire 24.00R35 (E4)
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 and optional equipment may vary. Consult your Cat dealer for details.
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 radiatorFor non-regulated regions only:– Direct drive fan– MEUI-A 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, front and rear (EU compliant)
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)
Economy Modes, standard and adaptive
Product Link, cellular or satellite
Traction Control System (TCS)
Truck Production Management System
Vital Information Management System (VIMS)
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 shift lever with integrated fingerprint control
Seat belt reminder system: Seat belt alert and Seat belt inhibit
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
Driveline
Engine crankcase
Fan
Antifreeze
Extended life coolant to –34° C (–30° F)
Grouped ground-level filters
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
Standard and optional equipment may vary. Consult your Cat dealer for details.
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)