Cat Off-Highway Trucks 773G (Tier 4)
Product Feature
Safety
Key Features
The 773G is solidly constructed for safety.
Rollover and Falling Object protection is part of the cab structure
Emergency egress is available through the right-side hinged window
Laminated glass is used in the front and left side windows
Ground level engine shutdown for convenience and safety
A back up alarm gives advance warning of truck movement
Operator Safety
The 773G provides operators with full shift comfort and safety features.
Fully adjustable and suspended seat
Integrated three point safety belt
A trainer's seat with lap belt facilitates on-the-job task training
Audible warnings signal events, and fluid level monitoring is available from inside the cab
In some instances, the truck will automatically derate engine power for safety
Job Site Safety
Speed limiting on the haul is new and more efficient than gear limiting
Secondary steering in the event of power loss
Speed limiting during body up operations
A Focus on Personnel
The 773G is designed to minimize hazards associated with working on and around this truck.
Ground level daily check points
Low effort, integrated access system with hand rails for three points of contact
Aggressive tread plate on all step areas, and lighting for after dark
Folding windshield washing platform offers solid footing for cleaning the windshield
Confidence and Control
Confident operators will move material quickly, efficiently and profitably.
Brake design updates increase slope holding capability and include a brake wear indicator
Wet disc braking for rear wheels; dry disc braking on the front
Automatic Retarding Control for downhill grades
New traction control system
Visibility
The 773G supports your site safety plan with excellent visibility to the job site.
Work Area Vision System (WAVS) is a camera system that enhances visibility behind the truck
Lighting and mirror packages are available to suit your site conditions
Operator Work Environment
Comfort
The comfort of your crew will contribute to their productivity and awareness on the job.
Easy, low effort access to the cab
Ergonomic, intuitive controls
Left side power window
Automatic temperature control inside the cab
Throttle lock convenience for long uphill climbs
The cab is spacious with window area that supports visibility
An integrated footrest provides comfort and support
Sound suppression provides a quieter work environment
The cab is isolation mounted reducing noise and vibration
Lighting package options to meet operation needs
Automotive quality shifting from new APECS transmission controls
Confidence and Control
Strong, predictable performance will help your operators achieve the lowest cost per ton.
Automatic Retarding Control reduces operator effort and controls braking on downhill grades
Performance and health information at a glance using well lit gauges and the Advisor Message Display
Steering performance from a design that maintains tire alignment
Stopping power from fade-resistant brakes - purpose built for off road applications and the loads carried by the 773G
Traction control is now steering sensitive and uses the service brakes to control wheel slip. The result: faster activation and improved response to wheel slip
Visibility is excellent with extensive mirror options, large window areas.
Cab layout subject to change with optional equipment.
Information
The Advisor display and VIMS™ software are important reporting tools that help you analyze:
Productivity, haul road efficiency, operator skill
Fuel use, cycle times, idle time
Machine health and events
Sustainability
As you work for a more sustainable business model, the Cat® 773G can contribute in more ways than one.
Fuel and Emissions
There are multiple fuel saving strategies on the 773G, two are economy modes that are adjustable to meet your unique production needs
For the U.S., Tier 4 Final emission controls are conveniently low maintenance and are transparent to the operation of the truck
Sound
Operator noise is reduced by 50% using sound suppression technology in the cab
A rubber liner option for truck bodies reduces noise levels for both the operator and spectators
Component Life
Cat Reman parts are an economical alternative to new
You can extend tire life using TKPH/TMPH, a feature that calculates tire loading
Castings and box section frame construction absorb shocks and distribute loads
A new rear axle housing holds new, robust differential gears that compliment the power and torque increases of the truck
Hydraulic oil filter life is extended to 1,000 hours under normal conditions
Autostall enables quick operating temperatures for best performance and life
Delayed engine shutdown prevents hot shutdowns that can reduce component life
Tier 4 Final
Caterpillar's simple solution is transparent to your operators, controls emissions and increases fuel efficiency.
Two engine-mounted diesel oxidation catalyst canisters control particulate matter
Our NRS Technology replaces a portion of intake air with exhaust gas to control combustion temperatures and Nox production
Precise, extremely fine atomization of fuel under all load conditions
Cutting Your Fuel Costs
The 773G introduces several key fuel conservation features:
Auto Neutral Idle - as the 773G idles in a forward gear, the transmission will automatically slip in and out of a neutral state to avoid stalling the torque converter and increasing fuel consumption.
Engine Idle Shutdown - when your G Series truck is in park and idles for more than a preset time, the truck will initiate engine shutdown to conserve fuel. This feature can be time adjusted or turned on or off according to your specific needs.
Speed Limiting - while you can continue to gear limit your G Series trucks, Caterpillar offers speed limiting that allows the truck to travel at a more fuel efficient engine speed and gear selection.
Transmission Controls - New APECS transmission controls increase fuel efficiency by maintaining momentum and speed on grade.
Economy Modes
Standard Economy Mode - G Series has the ability to adjust engine power based on your site, fleet and economic conditions. You can manually control fuel burn by adjusting the power down between 0.5 and 15 percent.
Adaptive Economy Mode - New for G Series - this economy mode requires a baseline for production from you using the Advisor display. As the truck transits the haul cycle, it is constantly evaluating its ability to meet your baseline in a reduced power setting. Where full power is needed, full power is applied, where reduced power works, reduced power is applied. It's fully automatic with no special operation required.
Performance
The 773G will haul your material faster and more efficiently with increases in power and new APECS transmission controls.
A 5% increase in power improves cycle times and grade climbing performance
New APECS transmission controls carry more torque through the shifts, producing faster cycle times and the possibility of climbing grades in a higher gear
Traction Control
G Series introduces benefits to your fleet when running in wet conditions by introducing a more responsive traction controls system.
The system is steering sensitive to determine slip from high speed turns
The system engages at slower speeds returning traction sooner
The system engages sooner in the slip, potentially reducing tire wear
The system modulates instantly between the two wheel groups for control
Using the hydraulic service brakes facilitates the instant modulation and responsiveness
Long Term Value and Durability
At Caterpillar, we know that our truck is critical to your business, that's why we use industry leading technology to ensure maximum machine availability and reliability.
Structural Strength
The backbone of the 773G is its frame. Our frames are designed for off-road integrity and more than one life cycle. The 773G, with its new power and performance increases, has updated final drive gears and a new rear axle housing to support this new level of work.
Caterpillar strategically applies castings with box section construction to manage off-road stresses
A new front frame design increases the approach angle on ramps and grades
New heavy duty gears compliment the updates in power and torque
A new robust rear axle housing also supports the truck's performance
Suspension
Front struts use our proven king pin design for effective absorption of haul road shocks
Rear suspension cylinders have been inverted to minimize contamination
Planetary Powershift Transmission with APECS Controls
New APECS controls improve performance with the following:
Torque shift management - allows the truck to power through shift points
Part throttle shifting - provides an exceptionally smooth ride
ECPC - electronically controls clutch pressures for long life
Cat C27 ACERT
5% more power gives the truck new performance levels and quick haul cycles
Cat MEUI™ injectors provide high pressure, fine atomization under all load conditions for fuel efficiency and responsiveness
Low pressure fuel lines from the tank to the engine simplify service
The C27 is carefully balanced with vibration controls that reduce noise and protect against unnecessary harmonics
Cooling is provided by either a demand fan (standard for Tier 4 Final machines) or a conventional cooling fan
Ground level engine shutdown switch for safety
Excellent high-altitude capability (see specifications for details)
Steering
The steering linkage is designed to provide feedback to the operator
The Cat king pin front suspension system maintains steering tolerances and tire alignment
Brake Performance
Cat trucks provide powerful, fade-resistant braking for off road applications, and G Series introduces new ways to extend your brake life.
Rear brakes are wet disc while the front are dry, caliper type
Slope holding capability benefits from all wheel parking brake actuation
Brake life can be extended by choosing the optional Cat Engine Brake
Additional springs in the design reduce wear and increase service life
A brake wear indicator keeps you informed of maintenance timing
Extended life brake material is available for extreme applications
Body Options
Our truck bodies are engineered to compliment the chassis and built to haul your material for years of trouble-free performance. In fact, Cat truck bodies are designed to let the truck perform at peak efficiency by correctly centering and distributing the load. Outfitting your truck body with a steel or rubber liner may be advisable based on material type and application. If you have questions about body selection or applying liners, your Cat dealer has the tools and knowledge to help you with this decision process.
The Rubber Liner
This important factory-installed option will prolong body life in hard rock applications.
Available for the dual slope and flat floor bodies
It will reduce shock loading for both the operator and truck
It absorbs noise, reducing both spectator and operator sound levels
The rubber liner is not a good option for wet, sticky material
The rubber liner should not be used with our body heat option
Side Boards
In the event that your material is light weight, we offer factory-installed 150 mm (6 in) sideboards to help you achieve rated capacities. You can use our “Body Selection Guide” as a reference for selecting the correct body type and liner package. Cat dealers can order this document using reference number AEXQ0673.
Dual Slope Body
If your haul profile includes steep slopes, the dual slope body offers excellent material retention.
The dual slope has a SAE 2:1 heaped capacity of 35.20 m3 (46 yd3) with a steel liner configuration
400 BNH steel on interior surfaces offers excellent wear characteristics
Material is carried low and centered for stability
A single 16 mm (0.62 in) steel liner option is available for this body
A single rubber liner is available for this body
Flat Floor Body
If you're feeding a crusher, the flat floor body is an excellent choice for metering material.
The flat floor body also offers excellent material retention and stability
400 BNH steel is used on internal surfaces for wear protection
A single steel liner option is available
A rubber liner is also available for this body
Service Convenience
Service Centers - Electrical Connections
This bumper-mounted electrical service center provides the convenience and safety of ground level access to important service tasks.
Ground level access to VIMS data
Ground level access to an ET port
Includes a master disconnect switch
Engine lockout switch
Hydraulics lockout switch
Breaker access
Brake Monitoring
G Series introduces updates that will increase the life of your brakes.
A brake wear indicator is new and standard
Design improvements are increasing separation forces to lessen wear and increase brake life
Filter Life
With all new hydraulic system efficiency, your filter life is extended to 1,000 hours
Cab air filter life can also be extended with the optional cab precleaner.
Our engine oil filters are improved, and in some cases extending life beyond 500 hours
Service Centers - Fluid Fill
You will save both time and money using the optional fluid fill service center.
Fill and extraction for all fluids in one location
Key pad indicates existing fluid levels
Includes all oils, coolant and fuel
Conveniently located at ground level
Lighted for night time use
Product Link™
For comprehensive fleet management, Caterpillar offers Product Link solutions. This solution is a combination of machine-mounted hardware and software called Vision Link. You can access fleet information either through cellular or satellite channels. These channels may be restricted and unavailable in some countries. Customers who use Product Link are remotely monitoring machine health and organizing service requirements.
Product Parameter
Overview
G Series represents a new era for the 773, and with your long-term success as our goal, we've developed this truck to be more productive and economical. It offers your operators the confidence, comfort and control to run at peak efficiency, and it can feed your crushers and haul material at a lower cost per ton. When you also consider its performance and fuel efficiency, the 773G is the right truck for our generation.
Engine
Units:
Engine Model | Cat® C27 ACERT™ | Cat® C27 ACERT™ |
Rated Engine Speed | 1800.0 r/min | 1800.0 r/min |
Gross Power - SAE J1995 | 775.0 HP | 578.0 kW |
Net Power - SAE J1349 | 717.0 HP | 534.0 kW |
Net Power - 80/1269/EEC | 724.0 HP | 540.0 kW |
Net Power - ISO 9249 | 724.0 HP | 540.0 kW |
Bore | 5.4 in | 137.0 mm |
Stroke | 6.0 in | 152.0 mm |
Displacement | 1648.0 in³ | 27.0 C |
Engine Power - ISO 14396 | 762.0 HP | 568.0 kW |
Net Torque | 2944.0 ft-lb | 3992.0 N·m |
Peak Torque - Speed | 1200.0 r/min | 1200.0 r/min |
Weights - Approximate
Maximum Gross Vehicle Weight | 226503.0 lb | 102740.0 kg |
Operating Specifications
Nominal Payload Class (100%) | 61.0 t | 55.3 t |
Top Speed - Loaded | 41.6 mile/h | 66.9 km/h |
Body Capacity - SAE 2:1 | 46.75 yd³ | 35.75 m³ |
Maximum Working Payload (110%) | 67.0 t | 60.8 t |
Not to Exceed Payload (120%)* | 73.1 t | 66.3 t |
Transmission
Forward - 1 | 6.6 mile/h | 10.6 km/h |
Forward - 2 | 9.3 mile/h | 15.0 km/h |
Forward - 3 | 12.6 mile/h | 20.3 km/h |
Forward - 4 | 16.8 mile/h | 27.0 km/h |
Forward - 5 | 22.8 mile/h | 36.7 km/h |
Forward - 6 | 30.7 mile/h | 49.4 km/h |
Forward - 7 | 41.6 mile/h | 66.9 km/h |
Reverse | 8.7 mile/h | 14.0 km/h |
Final Drives
Differential Ratio | 3.64:1 | 3.64:1 |
Planetary Ratio | 4.80:1 | 4.80:1 |
Total Reduction Ratio | 17.49:1 | 17.49:1 |
Brakes
Brake Surface - Front | 257.0 in² | 655.0 cm² |
Brake Surface - Rear | 9497.0 in² | 61269.0 cm² |
Brake Standards | ISO 3450:1996 | ISO 3450:1996 |
Body Hoists
Pump Flow - High Idle | 118.0 gal/min | 448.0 l/min |
Relief Valve Setting - Raise | 2502.0 psi | 17250.0 kPa |
Relief Valve Setting - Lower | 500.0 psi | 3450.0 kPa |
Body Raise Time - High Idle | 10.0 s | 10.0 s |
Body Lower Time - Float | 14.0 s | 14.0 s |
Body Power Down - High Idle | 14.0 s | 14.0 s |
Capacity - Dual Slope - 100% Fill Factor
Struck | 35.13 yd³ | 26.86 m³ |
Heaped 2:1 (SAE) | 46.76 yd³ | 35.75 m³ |
Capacity - Flat Floor - 100% Fill Factor
Struck | 34.33 yd³ | 26.25 m³ |
Heaped 2:1 (SAE) | 46.41 yd³ | 35.49 m³ |
Weight Distributions - Approximate
Front Axle - Empty | 53.0 % | 53.0 % |
Front Axle - Loaded | 35.0 % | 35.0 % |
Rear Axle - Empty | 47.0 % | 47.0 % |
Rear Axle - Loaded | 65.0 % | 65.0 % |
Suspension
Rear axle - Oscillation | 8.1 ° | 8.1 ° |
Empty Loaded Cylinder Stroke Front | 9.2 in | 234.0 mm |
Empty Loaded Cylinder Stroke Rear | 5.8 in | 149.0 mm |
Service Refill Capacities
Fuel Tank | 210.0 gal (US) | 795.0 C |
Cooling System | 45.0 gal (US) | 171.0 C |
Differential - Final Drives | 38.0 gal (US) | 145.0 C |
Steering Tank | 9.5 gal (US) | 36.0 C |
Steering System - Including Tank | 14.0 gal (US) | 54.0 C |
Brake Hoist System | 85.0 gal (US) | 322.0 C |
Brake/Hoist Hydraulic Tank | 46.5 gal (US) | 176.0 C |
Crankcase | 24.0 gal (US) | 90.0 C |
Torque Converter - Transmission System - HRC | 18.0 gal (US) | 70.0 C |
Torque Converter - Transmission System - LRC | 16.0 gal (US) | 61.0 C |
Tires
Standard Tire | 24.00R35 (E4) | 24.00R35 (E4) |
ROPS
ROPS/FOPS Standards | Standards | Standards |
Sound
Sound Standards | Standards | Standards |
Steering
Turning Diameter - Front | 77.1 ft | 23.5 m |
Steering Standards | SAE J1511 FEB94 ISO 5010:1992 | SAE J1511 FEB94 ISO 5010:1992 |
Steer Angle | 31.0 ° | 31.0 ° |
Turning Circle - Clearance Diameter | 85.6 ft | 26.1 m |