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Caterpillar 777D Off-Highway Truck

Approximate Weights - Dual Slope

Body34785 lbs
Chassis106964 lbs

Approximate Weights - Flat Floor

Body1300 lbs

Body Hoists

Body Lower Time - Float13 seconds
Body Power Down - High Idle13 seconds
Body Raise Time - High Idle15 seconds
Pump Flow - High Idle119 gpm
Relief Valve Setting - Lower3450 psi
Relief Valve Setting - Raise2750 psi


Brake StandardsISO 3450: 1996; SAE J1473 OCT90
Brake Surface - Front432 cu in
Brake Surface - Rear15828 cu in

Capacity - Dual Slope - 100% Fill Factor

Heaped 2:1 (SAE)78.6 cu yd
Struck55 cu yd

Capacity - Flat Floor - 100% Fill Factor

Heaped 2:1 (SAE)SAE J1040 MAY94, ISO 3471:1997 cu yd


Centerline Front Tire Width13.7 ft
Centerline of Rear Dual Tire Width11.8 ft
Dump Clearance3.1 ft
Dump Ground Clearance2.9 ft
Dump Height32.8 ft
Engine Guard Clearance2.4 ft
Front Canopy Height16.6 ft
Ground Clearance2.5 ft
Height - Top of ROPS/FOPS14.8 ft
Inside Body Depth - Maximum6.3 ft
Inside Body Length23.8 ft
Inside Body Width17.1 ft
Loading Height - Empty14.4 ft
Operating Width20.1 ft
Outside Body Width18.2 ft
Overall Body Length31.3 ft
Overall Canopy Width19.1 ft
Overall Height16.5 ft
Overall Height - Body Raised33 ft
Overall Length32.1 ft
Overall Tire Width17.3 ft
Overall Width20.1 ft
Rear Axle - Clearance2.5 ft
Rear Axle - Tail9.2 ft
Wheel Base15 ft
Wheelbase15 ft


Dump Angle1750
Load Capacity - heaped79.2 cu yd
Load Capacity - Struck55 cu yd
Raise Time15 seconds
Rated Payload200000 lbs


Bore6.7 in
Displacement2105 cu in
Engine ModelCat 3508B EUI
Flywheel Power938 hp
Gross Power1000 hp
Gross Power - SAE J19951000 hp
Max Torque3476.2 lbs ft
Net Power938 hp
Net Power - 80/1269/EEC938 hp
Net Power - Cat938 hp
Net Power - ISO 9249938 hp
Net Power - SAE J1349938 hp
Number of Cylinders8
Rated Engine Speed1750 rpm
Stroke7.5 in
Torque Measured @1300 rpm
Torque Rise23%

Final Drives

Differential Ratio2.74:1
Planetary Ratio7.00:1
Total Reduction Ratio19.16:1

Operating Specifications

Alternator Supplied Amperageautomatic power shift
Body Capacity - SAE 2:178.6 cu yd
Body Capacity - Struck55.1 cu yd
Brake/Hoist System Fluid Capacity109.7 gal
Circle Clearance Diameter85.5 ft
Cooling System Fluid Capacity85.9 gal
Diff and Final Drive Fluid Capacity87 gal
Engine Oil Capacity32.8 gal
Fuel Capacity300.4 gal
Hydraulic System Fluid Capacity36.5 gal
Lower Time14 seconds
Maximum Capacity178920 lbs
Nominal Payload Capacity87 lbs
Nominal Payload Class (100%)178920 lbs
Raise Time15 seconds
Steer Angle31.8 deg
Steering System Fluid Capacity22.2 gal
Top Speed - Loaded39.9 mph


ROPS StandardsANSI/SAE J1166 MAY90, SAE J88 JUN96
ROPS/FOPS StandardsSAE J1040 MAY94, ISO 3471:1997

Service Refill Capacities

Brake Hoist System - Includes Tank109.7 gal
Brake/Hoist Hydraulic Tank200000 gal
Cooling System86 gal
Differential - Final Drives87 gal
Fuel Tank300 gal
Steering System - Including Tank22 gal
Steering Tank15 gal
Torque Converter - Brake - Hoist Hydraulic Tank66 gal
Torque Converter - Transmission Sump107100 gal
Torque Converter - Transmission System - Including Sump36.5 gal


Sound StandardsANSI/SAE J1166 MAY90, SAE J88 JUN96

Steering System

Steer Angle31.8 deg
Steering StandardsSAE J1511 OCT90, ISO 5010:1992 (E)
Turning Circle - Clearance DiameterISO 3450: 1996; SAE J1473 OCT90 ft


Effective Cylinder Stroke - Front12.5 in
Effective Cylinder Stroke - Rear6.5 in
Rear axle - Oscillation5.4 deg


Standard Tire27.00-R49 (E4)
Standard Tires432


Forward - 16.5 mph
Forward - 28.9 mph
Forward - 312 mph
Forward - 416.2 mph
Forward - 521.9 mph
Forward - 629.4 mph
Forward - 739.9 mph
Max Speed37.6 mph
Number of Gears - Forward7
Number of Gears - Reverse1
Reverse7.4 mph
Transmission Typeautomatic power shift


Body Weight34800 lbs
Chassis Weight107100 lbs
Empty Weight155000 lbs
Front Axle - Empty47%
Front Axle - Loaded33%
Loaded Weight355010.5 lbs
Operating Weight - Empty141749 lbs
Operating Weight - Loaded355000 lbs
Rear Axle - Empty53%
Rear Axle - Loaded67%
Target Gross Machine Operating Weight360000 lbs
Weight Distribution Front - empty45.4%
Weight Distribution Front - loaded33.3%
Weight Distribution Rear - empty54.6%
Weight Distribution Rear - loaded66.7%

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39.04690 \\ -77.49030 \\ Ashburn \\ PA