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CAT Off-Highway Trucks 773E

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Overview

Engine

Torque Rise
19%
Gross Power – SAE J1995
567 kW
Net Power – SAE J1349
537 kW
Number of Cylinders
12
Peak Torque
3436 N·m
Rated Engine Speed
2000 rpm
Displacement
27 L
Bore
137 mm
Stroke
152 mm
Engine Model
Cat 3412E

Weight Distributions - Approximate

Front Axle - Empty
46.6%
Front Axle - Loaded
33.8%
Rear Axle - Empty
53.4%
Rear Axle - Loaded
66.2%

Service Refill Capacities

Differentials and Final Drives
155 L
Steering Tank
34 L
Steering System (Includes Tank)
60 L
Brake/Hoist System (Includes Tank)
307 L
Torque Converter/Transmission System (Includes Sump)
72 L
Torque Converter/Transmission System
53 L
Crankcase
68 L
Cooling System
122 L
Fuel Tank
700 L

Undercarriage

Ground Clearance
676 mm

Body Hoists

Pump Flow – High Idle
491 L/min
Relief Valve Setting – Raise
17 225 kPa
Relief Valve Setting - Lower
3445 kPa
Body Raise Time - High Idle
9.5 secon
Body Lower Time - Float
12.5 secon
Body Power Down - High Idle
17.51 secon

Dimension

Engine Guard Clearance
667 mm
Rear Axle to Tail
2782 mm

Brakes

Brake Surface - Front
1395 cm2
Brake Surface - Rear
61 269 cm2

Transmission

Reverse
13.1 km/h
Forward 7
62.2 km/h
Forward 3
18.8 km/h
Forward 4
25.2 km/h
Forward 5
34.1 km/h
Forward 1
9.9 km/h
Forward 2
13.9 km/h

Dimensions (All dimensions and weights are approximate.)

Width, Front Tire Center Line
3275 mm
Width, Outside Front Tires
3966 mm
Width, Cab
4040 mm
Width, Overall Canopy
4398 mm
Width, Outside Body
3910 mm
Width, Inside Body
3658 mm
Height, Front Canopy, Empty
4393 mm
Height, Front Canopy, Loaded
4350 mm
Rear Axle Clearance
591 mm
Width, Rear Dual Tire Center Line
2927 mm
Width, Overall Tire
4457 mm
Height, Top of ROPS, Empty
4000 mm
Height, Top of ROPS, Loaded
3900 mm
Length, Overall
9338 mm
Length, Inside Body
6400 mm
Length, Overall Body
8535 mm
Wheelbase
4191 mm
Dump Clearance, Empty
566 mm
Height, Loading, Empty
3773 mm
Depth, Inside Body, Maximum
1840 mm
Height Overall, Body Raised
8787 mm
Width, Left Railing to Right Side Body
4316 mm
Width, Operating
5076 mm
Width, Operating (with extended catwalk)
5539 mm

Final Drives

Planetary Ratio
4.8:1
Differential Ratio
3.64:1
Total Reduction Ratio
7.48:1

Tires

Standard Tires
24.00R35 (E4)

Suspension

Effective Cylinder Stroke - Front
234 mm
Effective Cylinder Stroke - Rear
149 mm

Steering

Steering Angle
31°
Turning Diameter on Front Wheel
22 m
Turning Circle Clearance Diameter
25 m

Sound

Sound Standards
ISO 6393:2008,SAE J1166:2008

Capacity - Dual Slope - 100% Fill Factor

Struck
26.6 m3
Heaped 2:1 (SAE)
35.2 m3

Power Train

Ca 3412E air-to-air after cooled diesel engine features Hydraulic Electronic Unit Injector (HEUI™) for efficient operation. High displacement/low speed rating extends engine life. Cat 3412E meets U.S. EPA Tier 2 equivalent/China Nonroad Stage III emission standards. The 19% torque rise provides high lugging force during acceleration and less down shifting on grade or in rough underfoot conditions. The torque rise effectively matches the transmission shift points to provide maximum efficiency and faster cycle times.

Fuel Economy

The 773E fuel saving strategies find opportunities to reduce fuel burn and fuel costs.

  • Economy Mode modifies engine maps to take advantage of steady grades and level ground, reducing power and fuel burn.
  • Speed Limiting automatically selects the most fuel efficient gear and speed for the terrain at each moment.
  • Engine Idle Shutdown identifies when the truck is in park and idles for more than a preset time, and initiates engine shutdown to conserve fuel. This feature can be time adjusted or turned on or off according to your specific needs.
  • Engine Over Speed Protection – Electronically senses engine conditions and automatically up-shifts one gear to prevent over speeding. For machines with ARC, if over speeding occurs in the top gear, the lock-up clutch is disengaged, and the brakes are applied.

Serviceability

The improved accessibility for radiator coolant and engine oil fill point improves serviceability. Safe, convenient maintenance with a machine platform and ground level battery disconnect. The new instrumentation and Advisor system provides a 3-category warning system and quick access to stored diagnostic data. The Advisor provides quick on-board diagnostics, reduces downtime and lowers operating costs. Radial seal filters are easy to change, and vertical, spin-on filters simplify servicing. Quick coupler taps and S·O·SSM analysis points make oil sampling quick and clean. Sealed electrical connectors lock out dust and moisture. Color-coded wiring is standard.

Diagnostic Capability

Critical power train data, including transmission shifting, engine speed and fuel consumption, provides service technicians with enhanced diagnostic capability to reduce downtime and operating costs.

Electronic Technician (ET)

Cat ET service tool provides service technicians with easy access to stored diagnostic data through the Cat Data Link.

Cab and Access

The 773E cab interior, is completely redesigned to provide better visibility and comfort for the operator. Features include a new dash, advisor display and redesigned center console. Rollover and Falling Object Protection is an extension of the truck frame.

Operator Seat

The Cat Comfort Seat uses full air suspension to smooth rough rides, and has a retractable four-point seat belt with a shoulder harness. A trainer seat with a lap belt to facilitate on-the-job task training.

Brakes

The Cat front dry caliper with rear oil-cooled multiple disc brakes deliver reliable performance and control in the most extreme haul-road conditions. Speed limiting during body up operation is standard. Oil-cooled rear disc brakes are 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.

Automatic Retarder Control (ARC) (optional)

ARC controls braking on grade electronically, maintaining consistent engine speed, lower fuel burn, and better control.

Traction Control System (TCS) (optional)

The traction control system monitors wheel slips so if it exceeds the set limit, the oil cooled disc brakes are automatically applied to slowdown the spinning wheel.

Steering

Cat integrated steering and suspension system is designed for precise steering, excellent maneuverability, minimal tire wear and superior ride control. Secondary steering automatically engages if power source for the normal steering fails.

Durability

Rear wheel spindles are solid steel for longer life, and the rear cylinders are inverted to protect the rods from debris. These rugged cylinders use large diameter bore and low pressure nitrogen/oil design for long life with minimal maintenance.

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