Allison M8610AR

The Allison M8610AR is the pinnacle of heavy-duty automatic transmission technology, engineered for the most extreme vocational and military applications where power, durability, and braking control are non-negotiable. As a variant of the proven M8610A from the Allison 8000 Series, the “AR” designation adds a powerful integrated hydraulic retarder, delivering exceptional auxiliary braking to support massive loads in steep or prolonged descent conditions. Designed for vehicles with gross vehicle weights exceeding 150,000 lbs, the M8610AR provides six forward gears, one reverse, and a lock-up torque converter for efficient and smooth high-load performance. This transmission excels in mission-critical environments including tank transporters, mining equipment, oilfield rigs, and other severe-service platforms that demand reliable drivetrain management and robust braking assistance.

Key Benefits of the M8610AR Transmission

• Exceptional braking performance for high-mass vehicles in extreme conditions
• Reduces brake wear, improving lifecycle cost and safety
• Designed for continuous high-torque, high-load operation
• Fully automatic for driver ease and fleet uptime
• Battle-proven reliability in military and extreme vocational service
• Built-in diagnostics and programmable profiles for operational flexibility

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Technical Specifications:

• Model: M8610AR
• Series: Allison 8000 Series
• Type: Fully automatic planetary transmission with integrated hydraulic retarder
• Number of Speeds: 6 forward, 1 reverse
• Retarder: Integral hydraulic retarder for heavy-duty auxiliary braking
• Torque Converter: Heavy-duty lock-up type for smooth power transfer and fuel efficiency
• Maximum Input Torque: Up to 2,100 lb-ft (2,847 Nm)
• Gross Vehicle Weight Rating (GVWR): 150,000+ lbs (68,000+ kg), depending on configuration
• Applications:
  • Military heavy equipment and tank transporters
  • Oilfield and energy sector haul trucks
  • Mining and ultra-heavy off-road vehicles
  • Extreme-duty vocational or industrial hauling platforms
• Input Speed: Up to 3,300 RPM
• Cooling Requirements: High-capacity external cooler required (especially for retarder function)
• Lubrication: Full-pressure lubrication with high-capacity internal filtration
• Oil Specification: Allison TES-295 or TES-668 approved synthetic ATF
• PTO Capability: Yes — side and rear mount options available
• Mounting Configuration: SAE #1 bell housing (standard)
• Electronic Controls:
  • Allison ECM with retarder integration
  • Programmable shift strategies
  • Built-in prognostics (fluid, filters, clutch life monitoring)
  • Allison DOC® diagnostic compatibility
• Dry Weight: Approx. 1,600–1,750 lbs (726–794 kg) depending on configuration
• Retarder Braking Torque: Approx. 2,000–2,500 lb-ft (varies with speed and load)
• Integrated Features:
  • Shift inhibition logic and safety interlocks
  • Load-based adaptive shifting
  • Retarder control through engine brake or standalone modulation