Allison M6610A

The Allison M6610A is a heavy-duty, fully automatic transmission designed to meet the extreme demands of military, off-road, and severe-service vocational vehicles. As part of Allison’s advanced 6000 Series, the M6610A is engineered for high-output engines and high-GVWR applications, delivering exceptional torque capacity, long-term durability, and smooth gear transitions under variable loads and terrain conditions. It features six forward speeds and one reverse, a heavy-duty lock-up torque converter, and is controlled by a sophisticated electronic control system that manages shift quality, load adaptation, and system protection. With a focus on reliability in extreme environments—including heavy transport, military logistics platforms, and specialty off-road equipment—the M6610A is a preferred choice for operators demanding maximum drivetrain integrity in the harshest conditions.

Advantages of the M6610A

• Built to endure extreme loads and environmental conditions
• Smooth shifting and high torque handling for heavy-duty use
• Designed for mission-critical and vocational uptime
• Compatible with Allison prognostic and diagnostic tools for ease of maintenance
• Trusted in military and specialty vehicle platforms worldwide

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Technical Specifications:

• Model: M6610A
• Series: Allison 6000 Series
• Type: Fully automatic planetary transmission
• Number of Speeds: 6 forward, 1 reverse
• Control System: Allison electronic control module (ECM) with adaptive shift logic
• Torque Converter: Integral with lock-up clutch for efficient power transfer
• Maximum Input Torque: Up to 1,850 lb-ft (2,500 Nm)
• Maximum Gross Vehicle Weight (GVWR): Up to 100,000+ lbs (45,359+ kg), depending on application
• Applications:
  • Military logistics vehicles (e.g., tank transporters, heavy tactical trucks)
  • Mining and off-road haulage trucks
  • Severe-duty vocational vehicles requiring high torque capacity
• Input Speed Range: Up to 3,300 RPM
• Cooling Requirements: Heavy-duty external oil cooling system required
• Lubrication System: Pressure-lubricated with internal filtration
• Oil Specification: TES-295 or TES-668 approved synthetic ATF
• PTO Capability: Available (side and rear mounts optional depending on build)
• Integrated Features:
  • Shift inhibition for safety
  • Load-based shift scheduling
  • Built-in diagnostic interface (Allison DOC® compatible)
• Mounting Configuration: SAE #1 bell housing standard
• Weight (Dry): Approximately 1,200–1,300 lbs (545–590 kg)
• Retarder Option: Available in the M6610AR variant (not standard in M6610A)