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Features of Mack Defense’s Granite Wrecker

The Mack® Granite® Wrecker is a rugged and reliable truck. It features a fuel-efficient, 13-liter Mack MP8 engine that delivers plenty of horsepowers (440 HP), plus great low-end torque (up to 1,660 lb.-ft.) to provide you with the muscle to conquer any challenge and the endurance to work all day long. It is built on the proven Mack Cornerstone™ chassis that delivers rock-solid performance as it provides a constant frame rail height and sits high off the ground for maximum ground clearance over rough terrain.

WEIGHTS / DIMENSIONS

  • GVW: 72,000 lbs
    Wheel Configuration: 6×4
  • Frame: 11.1 mm x 300 mm x 90 mm with steel reinforcement section
  • Wheelbase: 241″
  • Platform: 257″
  • Overhang: 82″

 

POWERTRAIN

  • Type: 13 Liter, MP8 440 MaxiCruise®
  • Max Power: 440 HP (330 kW)
  • Max Torque: 1,660 lb.-ft. (2250 Nm)
  • Engine Brake: Mack® PowerLeash™
    Fan Drive: Behr electronic modulating
  • Air System: Meritor/Wabco air dryer
  • Starter: 12V, gear reduction
  • Batteries (3): Mack 12V, 650 cold cranking amps (CCA)
  • Alternator: 12V, 160A, brush type

DRIVELINE / TRANSMISSION

  • Driveline: Meritor® Heavy Duty
  • Transmission: Allison® 4500 RDS Gen4 with prognostics, 6-speed
  • Clutch: Eaton-Fuller CL7981, 15.5″ (39.4 cm), manual adjust
  • Brakes: Meritor “S” Cam Q-Plus, 16.5×6 Cam-front, Meritor Heavy Duty Q-Plus, 16.5×7 Cam-rear
  • ABS System: Bendix® 4S/4M
    Front/rear Tires: Michelin® XZUS, 315/80R22.5 (all position)

 

AXLES/SUSPENSION

  • Front Axle: Mack FXL20 (wide pivot center)
  • Axle Rating: 20,000 lb. (9,100 kg) rating
  • Front Suspension: Taperleaf spring suspension, axle-back position
    Rear Axle: Raydan AL520 Air Link™, 52,000 lb. (23,587 kg) rating
  • Carrier Ratio: 5.95
  • Rear Suspension: Air Ride Walking Beam™

CAB/CHASSIS

  • Driver Seat: Air Bostrom® Talladega 915 (mid-back)
  • Passenger Seat: Mack Fixed (mid-back)
  • Mirrors (side): Aerodynamic body colored, heated, motorized
  • Spare Tire: Spare tire/carrier on RH frame rail
  • Left Side Fuel Capacity: 50 gal. (189 L), steel
  • Right Side Fuel Capacity: 50 gal. (189 L), steel
  • Electronics: V-MAC® IV routine maintenance monitoring system, BodyLink™ II interface

Source: Mack Defense, 18th May 2023

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