The CT681 Vocational Truck

If you’re hauling heavy loads or working in extreme conditions, you’ll appreciate the Cat CT681 Vocational Truck’s rugged durability and industrial styling—with the versatility to mount the attachments you need to get the job done.

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CT681 Specifications

PURPOSE-BUILT FOR VOCATIONAL APPLICATIONS

Cat CT13 Engine

  • Ratings from 365-430 bhp & 1,250-1,550 lb-ft peak torque
  • Front Engine Power Take-Off (FEPTO)
  • Advanced air management system
  • High-pressure, common-rail fuel system
  • Dual sequential turbochargers & high-pressure injection system
  • Highly efficient Selective Catalytic Reduction (SCR) solution
  • Single Electronic Control Module (ECM)
  • Easy-access systems & components
  • Compacted graphite iron block
  • Fluid-free head gasket

Cat CX31 Automatic Transmission

  • Proven track record in vocational applications
  • Full power shifts & quick acceleration
  • Ideal speed & torque combinations for improved fuel economy
  • Two side PTO locations & Cat exclusive rear PTO
  • Six forward speeds & one reverse speed
  • Other options: Manual & Ultrashift® PLUS Vocational Transmissions built by Eaton

Axles

  • Meritor & Dana
  • 6x4 day cab
  • Tandems – Dana Spicer & Meritor 40,000-70,000 lbs. standard track
  • Front axle – Meritor 12,000-20,000 lbs.

Front Suspension

  • Parabolic taper leaf for smoother ride
  • Shock absorbers standard
  • Optional two-stage multi-leaf shackle type with shocks

Rear Suspension

  • Hendrickson offerings: HMX, HAS, RT, RS, R, PAX
  • Chalmers: standard and high articulation
  • Capacities from 40,000-85,000 lbs.

Brakes

  • AIR Dual System for straight truck
  • Bendix anti-lock brake system, available with full vehicle wheel control system (four- or six-channel) & optional automatic traction control
  • All systems meet federal stopping distance requirement
  • Optional Haldex slack adjuster

Fuel Tanks

  • 80-, 100- & 120-gallon capacities available
  • 9.5-gallon diesel exhaust fluid tank
  • Single-left, dual under cab, or back of cab options available
  • Aluminum alloy construction
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HOLT® Truck Center has the service bays, specialized tooling and technical experts to tackle all major systems and components, including brakes, drivelines and transmissions. HOLT has 74 dedicated truck engine service bays in 8 full-service truck facilities, supported by the HDA Truck Pride® parts network of over 60 authorized truck engine parts and service dealers in South Texas, providing bumper-to-bumper truck service and maintenance on most truck makes and models. We can diagnose and repair all your performance and power concerns. HOLT Truck Center also is the authorized dealer for Caterpillar® parts in 118 counties in Texas.

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