773E

Equipment / NEW / Off-Highway Trucks / Off-Highway Trucks / 773E

METRIC

773E

OVERVIEW

BENEFITS

FEATURES AT A GLANCE

SPECIFICATIONS

PRODUCT BROCHURES AND DOWNLOADS

TOOLS AND EXPERT HELP

MEDIA GALLERY

KEY SPECS

Engine Model Cat® 3412E
Rated Engine Speed 2000.0r/min2000.0r/min
Gross Power - SAE J1995:2014 567.0kW760.0hp

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OVERVIEW

BENEFITS

FEATURES AT A GLANCE

Operator Station

The ROPS/FOPS cabin has electric power window, electro-hydraulic hoist lever, trainer's seat, front brake cut-off switch, backlit LED gear numbers, and optional heater and air conditioner. The hoist lever is electro-hydraulic and fingertip actuated, providing low impact body-down snubbing. (1) Four-gauge cluster - coolant temperature, oil temperature, brake air pressure, fuel level (2) Tachometer, digital speedometer, actual gear indicator (3) Message center module Standard and fully adjustable, including an adjustable right-hand armrest. Steering wheel's ergonomic grip improves comfort and control. Low effort steering system and foot-operated retarder reduce operator fatigue. Turn signal lever includes high beam actuator and electric windshield wiper controls. Exceptional all-around viewing area reduces fatigue and improves operator confidence and productivity. Cab is resiliently mounted and sound-suppressed for a quiet, protected work environment, and is radio-ready.

Cat technology uses strut pressure sensors and on-board processors to determine payload weight.
Consistently accurate payloads improve efficiency by minimizing overloading and underloading.
On-board computer stores 1,400 cycles of payload weight, cycle times, distances and more.

Power Train - Engine

The four stroke design uses long power strokes for complete fuel combustion and optimum efficiency. High displacement/low speed rating extends engine life and meets China Nonroad Stage II Emissions Standards. 1) Valve Rotators 2) Turbocharger 3) Stellite-Faced Valves 4) Steel-Backed, Copper-Bonded Bearings 5) Oil Cooler 6) Forged Crankshaft 7) Adjustment-Free, Fuel Injection Pumps 8) Hydraulic Injectors 9) Forged Steel Pistons 10) Full-length, Water-Cooled Cylinder Liners High lugging force during acceleration and less downshifting on grade or rough underfoot conditions. Also effectively matches gear shift points for maximum efficiency.

High pressure injection
Full electronic control
Copper-bonded crankshaft bearings
Hardened crankshaft journals
Dry-type, radial seal air cleaners (primary, secondary elements, precleaner)

Electronically monitors operator and machine inputs to optimize engine performance. Independently controls injection pressure, timing and duration over the engine operating range. Rate shaping technology modifies the heat release characteristics of the combustion process for significant decreases in sound and exhaust emission levels.

The ECM monitors key functions and logs critical indicators. The Electronic Technician can access this diagnostic information for easier maintenance and repair.

Power Train - Transmission

High rimpull and cushioned shifts with direct drive's efficiency and performance.

Engages at approximately 6.9 km/h (4.3 mph), delivering more power to the wheels
Quickly releases / re-engages during shifts, maintaining power wind-up

A modulating pressure valve regulates clutch pressure to ease clutch engagement, reducing shock loads.

Patented rotating clutch pressure seals minimize drag losses and improve reliability
35 percent gear splits between all gears match Cat engine design for optimum use of engine power with minimized shifting and torque converter use
Matched with the 3412E engine for constant power over a wide range of operating speeds.
Seven speeds forward, one reverse; second through seventh gears are direct drive
First gear has both torque converter drive and direct drive

Final drive and differential torque multiplication of 17.48:1 further reduces stress on the drive train. Full floating axles are shot-peened to relieve internal stresses and increase durability. Rolled splines also provide increased service life. Cast rear wheels and center-mount rims are mounted using studs and nuts for maximum reliability.

Engine/Power Train Integration

Electronic control of the engine and transmission improves efficiency, lowers operating costs and extends machine life. Integrates machine computer systems:

Controlled Throttle Shifting regulates engine speed during shifts to reduce driveline stress, and deliver smoother shifts and longer component life.
Economy Shift Mode modifies engine maps for lower fuel consumption.
Directional Shift Management regulates engine speed during directional shifts to prevent damage.
Elevated Idle Neutral Coast Inhibitor helps prevent shifts to neutral at speeds above 6.5 km/h (4 mph).
Body-up Shift Inhibitor helps prevent transmission shifts above a preprogrammed gear without the body fully lowered.
Event Memory stores operational data for Electronic Technician access. Data includes:

- Shift histograms - Operator-induced events - Lock-up clutch counter - Machine/Transmission overspeed Accesses engine and transmission data stored by the Cat Data Link System, and displays the status of all engine parameters. Displays information on request, and alerts the operator to abnormal conditions with a three-category warning system.

Automatic Retarder Control (ARC) automatically controls retarding on grade, maintaining ±2,230 rpm.
Traction Control System (TCS) improves performance in poor underfoot conditions by electronically monitoring and controlling wheel slip.
Integrated Brake Controller (IBC) combines ARC and TCS, reducing electronic components and electrical lines.

Oil-Cooled, Rear Disc Brakes

1) Parking/Secondary Piston, 2) Service/Retarding Piston, 3) Friction Discs, 4) Steel Plates, 5) Actuating Springs, 6) Cooling Oil In, 7) Cooling Oil Out Cat multiple disc brakes use continuous forced oil-cooling. The optional ARC and TCS utilize the oil-cooled rear brakes to enhance truck performance and increase productivity. Designed and built for reliable, adjustment-free operation providing superior performance and service life in comparison to shoe-type and dry-disc systems. The system combines service, retarding and parking brake functions in a single unit. If hydraulic system pressure drops below a certain level, the spring applied secondary piston automatically applies the brake. Absorbing the braking forces by shearing oil and carrying heat away, this design extends brake life. Spring-applied, hydraulically released, oil-cooled disc brakes are located on the rear axle. The front brakes will activate as part of the secondary system, even if switched out of service. Spring-applied, hydraulically released parking brakes use wet disc brakes in the service system. A toggle switch activates the parking brake. A Caterpillar patented, two-piston design combines the service, secondary and parking brakes, along with retarding functions.

Integrated Braking Control (IBC)

The ARC electronically controls braking on grade to maintain approximately 2,230 rpm (engine rpm is adjustable from 2,150-2,300 rpm in increments of 10 rpm). ARC is deactivated when the operator applies the brakes or throttle.

With the accelerator depressed and/or ARC turned off, ARC will automatically activate at 2,475 rpm to help avoid potentially destructive and often costly engine overspeeds. Senses if rear wheel slip exceeds the set limit, and automatically applies rear brakes to slow the spinning wheel. An on-dash indicator shows the operator that TCS is engaged. Utilizes normal differential action to provide superior maneuvering in poor underfoot conditions. Also reduces tire scuffing as compared to positive lock differentials used on other systems. TCS divides torque equally to reduce stress created on final drives and axles when torque is transferred to one side. Should sensors fail, the normal differential action is still available to maintain control and steering.

Truck Body

Maximum payload in 3-5 passes with matched Cat loader in material over 1700 kg/m³ (2,900 lb/yd³).

Sidewall and floor junctions use five-sided beams to resist impact loads and hauling stresses
Box-section beams increase durability in the floor, sidewalls, top rail, corner and cab canopy areas
400 Brinell Steel wear surfaces provide excellent wear resistance and are easily cold welded
Two-stage hoist cylinders raise in 9.5 seconds, lower in 12.5 seconds
Standard Body comes exhaust heated with options including a full-time muffler or exhaust diverter
Custom attachments include tail end liner, sideboards and more, to help ensure rated payload.

Efficient in most construction and mining applications, but excels on rough haul roads and steeper grades.

8° "V" Bottom - Centers loads, lowers the center of gravity, increases retention, reduces shock loads
18° Ducktail and 9° Forward Body Slope - retains loads on 15% grade
12° Single Slope - Excellent wear characteristics and uniform dumping into hoppers, crushers and feeders.

Structures

The 773E frame uses 20 castings in high stress areas with deep penetrating and continuous wrap-around welding. Mild steel provides flexibility, durability and resistance to impact loads even in cold climates. The ROPS attaches securely to four castings welded into the frame.

Integral front bumper and front box beams for suspension cylinder and ROPS suppor
Box-section rear crossmember for body and ROPS support with attachment points for maintenance platform and rear engine hood hinge suppor
Castings provide additional strength in critical stress area
Mild steel plates (290 MPa [42,000 psi] minimum yield strength) and castings (241 MPa [35,000 psi] minimum yield strength) provide flexibility, durability and easy field maintenance
Castings provide additional strength in critical stress areas

Open design reduces overall removal and installation time, lowering repair costs. Repairs can be made without preheating in ambient temperatures above 16° C (60° F) using readily available welding supplies. Four independent suspension cylinders absorb shocks. Rear cylinders allow axle oscillation and absorb bending and twisting stresses. Front cylinders act as steering kingpins, for maneuverability and reduced maintenance.

Serviceability/Customer Support

Allows 30-50% faster engine service (changing most oil and filters). Improves service scheduling, allows servicing during normal work hours and reduces total engine service time. The machine platform provides access to the air tanks, brake master cylinder and make-up tank; engine oil level; air filters; steering hydraulic tanks; and battery compartment.

Easy to change, radial seal filters reduce air filter maintenance times. Simplified servicing and the elimination of spillage are benefits of vertical, spin-on filters. Cat dealers help manage equipment investments with:

Vehicle systems analysis to help match the right machine to the job
Preventative maintenance programs
S•O•S oil analysis and technical analysis programs
Repair option analysis
Training for operators and mechanics
TPMS data analysis

The Caterpillar worldwide computer network locates parts instantly to minimize machine downtime.

Systems / Applications

SPECIFICATIONS

Engine Model Cat® 3412E
Rated Engine Speed 2000.0r/min2000.0r/min
Gross Power - SAE J1995:2014 567.0kW760.0hp
Net Power - SAE J1349:2011 537.0kW720.0hp
Net Power - Cat 537.0kW720.0hp
Flywheel Power 501.0kW672.0hp
Net Power - ISO 9249 537.0kW720.0hp
Net Power - 80/1269/EEC 537.0kW720.0hp
Net Power - DIN 70020 681 PS
Number of Cylinders 12
Torque Rise 33.0%33.0%
Bore 137.0mm5.4in
Stroke 152.0mm6.0in
Displacement 27.0l1649.0in³
Peak Torque 3436.0N·m2534.0lb/ft
Target Gross Machine Operating Weight 99300.0kg219000.0lb
Chassis Weight 30219.0kg66621.5lb
Body Weight 9425.0kg20778.56lb
Nominal Payload Class (100%) 59.36t66.48ton (US)
Top Speed - Loaded 67.8km/h42.12mile/h
Body Capacity - Struck 26.6m³34.8yd³
Steer Angle 31.0°31.0°
Turning Circle - Clearance Diameter 25.0m82.0ft
Body Capacity - SAE 2:1 35.2m³46.0yd³
Turning Diameter - Front 22.0m72.2ft
Raise Time 9.5s9.5s
Lower Time 12.5s12.5s
Forward - 1 10.8km/h6.7mile/h
Forward - 2 15.1km/h9.3mile/h
Forward - 3 20.4km/h12.6mile/h
Forward - 4 27.4km/h17.0mile/h
Forward - 5 37.0km/h22.9mile/h
Forward - 6 50.0km/h31.0mile/h
Forward - 7 67.8km/h42.12mile/h
Reverse 13.1km/h8.1mile/h
Differential Ratio 3.64:1
Planetary Ratio 4.8:1
Total Reduction Ratio 17.48:1
Brake Surface - Front 1395.0cm²216.0in²
Brake Surface - Rear 61269.0cm²9496.0in²
Brake Standards ISO 3450: 2011
Pump Flow - High Idle 562.0l/min148.0gal/min
Relief Valve Setting - Raise 17225.0kPa2500.0psi
Relief Valve Setting - Lower 3445.0kPa500.0psi
Body Raise Time - High Idle 9.5s9.5s
Body Lower Time - Float 12.5s12.5s
Body Power Down - High Idle 17.51s17.51s
Struck 26.6m³34.8yd³
Heaped 2:1 (SAE) 35.2m³46.0yd³
Heaped 3:1 32.4m³42.4yd³
Heaped 1:1 43.3m³56.6yd³
Front Axle - Empty 46.6%46.6%
Front Axle - Loaded 33.8%33.8%
Rear Axle - Empty 53.4%53.4%
Rear Axle - Loaded 66.2%66.2%
Effective Cylinder Stroke - Front 234.0mm5.2in
Effective Cylinder Stroke - Rear 149.0mm5.9in
Rear axle - Oscillation 8.1°8.1°
Chassis 30200.0kg66579.0lb
Body 9210.0kg20304.0lb
Body with Standard Liner 3900.0kg8600.0lb
Front Axle - Empty 46.6%46.6%
Front Axle - Loaded 33.8%33.8%
Rear Axle - Empty 53.4%53.4%
Rear Axle - Loaded 66.2%66.2%
Gross Vehicle 99300.0kg219000.0lb
Fuel Tank 700.0l185.0gal (US)
Cooling System 122.0l32.0gal (US)
Differential - Final Drives 155.0l41.0gal (US)
Steering Tank 34.0l9.0gal (US)
Steering System - Including Tank 60.0l16.0gal (US)
Torque Converter - Brake - Hoist Hydraulic Tank 133.0l35.0gal (US)
Brake Hoist System - Includes Tank 307.0l81.0gal (US)
Torque Converter - Transmission System - Including Sump 72.0l19.0gal (US)
Crankcase 68.0l18.0gal (US)
Torque Converter - Transmission System 53.0l14.0gal (US)
Standard Tire 24.00-R35 (E4)
ROPS Standards ISO 3471:2008 for Operator and ISO 13459:2012 Trainer
Sound Standards ISO 6393:2008, SAE J1166:2008
Turning Diameter - Front 22.0m72.18ft
Turning Diameter - Front Wheel Track 22.0m72.18ft
Steering Standards Steering Standards Meets ISO 5010:2007
Steer Angle 31.0°31.0°
Turning Circle - Clearance Diameter 25.0m82.02ft
Height - Top of ROPS 4000.0mm13.12ft
Overall Body Length 8535.0mm28.0ft
Inside Body Length 6400.0mm21.0ft
Overall Length 9120.0mm31.5ft
Wheel Base 4191.0mm13.75ft
Rear Axle - Tail 2782.0mm9.13ft
Ground Clearance 591.0mm1.94ft
Dump Clearance 676.0mm2.22ft
Loading Height - Empty 3773.0mm12.38ft
Inside Body Depth - Maximum 1805.0mm5.92ft
Overall Height - Body Raised 8787.0mm28.83ft
Operating Width 5076.0mm16.8ft
Centerline Front Tire Width 3275.0mm10.74ft
Engine Guard Clearance 667.0mm2.2ft
Overall Canopy Width 4393.0mm14.41ft
Outside Body Width 3910.0mm12.8ft
Inside Body Width 3658.0mm12.0ft
Front Canopy Height 4424.0mm14.51ft
Rear Axle - Clearance 591.0mm1.94ft
Centerline of Rear Dual Tire Width 2927.0mm9.6ft
Overall Tire Width 4457.0mm14.62ft
FOPS Standards ISO 3449:2005 Level II FOPS criteria for Operator and ISO 13459:2012 Level II