SPECS SUMMARY

Engine ModelCat® CT13 Engine
Horse Power at 1700 rpm365 - 430 hp (268 - 316 kW)
Maximum Gross Input Power550 mm H2O (410 kg/mm)
A natural extension of the Cat® product line, the Cat CT681 Vocational Truck delivers all the power, performance and productivity you expect from Caterpillar. This Class 8 set-forward axle model—ideal for hauling heavy loads—features a spacious and ergonomic cab, industrial styling, vocational-specific engine and transmission options, and bumper-to-bumper support across North America.


Specifications

-Engine ModelCat® CT13 Engine
-Horse Power at 1700 rpm365 - 430 hp (268 - 316 kW)
-Maximum Gross Input Power550 mm H2O (410 kg/mm)
-Maximum Gross Input Torque1700 lb/ft (2400 N·m)
-Bore4.96 in (12.6 cm)
-Engine TypeDiesel, 4-Cycle
-Stroke6.54 in (16.6 cm)
-ConfigurationInline 6-Cylinder
-Transmission ModelCat CX31® Automatic Transmission
-Compression Ratio17:1
-Displacement758 in³ (12.4 l)
-AspirationDual Series Turbochargers, Intercooler and Aftercooler
-Combustion SystemDirect Injection
-Lubrication System Capacity42 qt (US) (40 l)
-Coolant Drain Interval600,000 miles (965,606 km)
-Total Engine Weight - Dry2400 lb (1089 null)
-Width37 in (94 cm)
-Length59 in (150 cm)
-Height49 in (125 cm)
-Valves4 Valves Per Cylinder, Overhead Cam Actuated
-Peak Torque - 1000 rpm1550 lb-ft (2102 N-m)
-Speeds6 forward/1 reverse
-Torque ConverterCast aluminum design with lock up clutch
-ClutchesElectro-hydraulic fully modulated, oil cooled, multidisc
-Maximum Input Speed2500 rpm
-Length35.3 in (896 mm)
-Rear - PTO Capacity (Rotation Opposite of Engine, at 1.25 Engine Speed)800 ft-lb (1356 N·m)
-Side - PTO Capacity (Rotation Same as Engine, Ratio Determined by PTO Adaptor)700 ft-lb (950 N·m)
-Power Take-OffTwo side locations and a Cat exclusive high output rear PTO
-Overall Weight - With Retarder Option1088 lb (494 null)
-Overall Weight - Approximate906 lb (411 null)
-Overall Length - With Retarder Option39.4 in (1000 mm)

Benefits and Features

Standard Equipment

  • Chasis
  • Axles
  • Front Suspension
  • Rear Suspension
  • Fuel Tank

Optional Equipment

  • Chassis
  • Transmission
  • On-Board Technology

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