Allison S9810HR

The Allison S9810HR is a premier heavy-duty, fully automatic transmission designed specifically for ultra-heavy, high-mobility tracked military vehicles that demand horizontal mounting and integrated braking performance. As the most feature-rich model in the S9810 lineup, the S9810HR offers advanced drivetrain control, exceptional durability, and the added benefit of an integrated hydraulic retarder, enhancing vehicle safety and operational efficiency.

The “H” denotes a horizontal orientation, ideal for low-profile armored chassis and hulls requiring compact drivetrain integration. The “R” represents the built-in hydraulic retarder, which adds supplemental braking capability—especially valuable during prolonged descents, high-speed maneuvers, and tactical operations requiring precise vehicle handling. The retarder reduces stress on the main service brake system and supports longer brake life in severe-duty environments.

Capable of handling input torques up to 3,000 lb-ft and gross vehicle weights exceeding 190,000 lbs, the S9810HR is engineered for high-performance tracked vehicles such as mobile artillery systems, combat bridge layers, and armored engineering equipment operating under extreme load and terrain conditions. With Allison’s proven electronic controls, adaptive shift logic, and rugged military-grade construction, the S9810HR sets the standard for reliability and performance in the field.

Key Benefits of the S9810HR Transmission

• Full braking support with integrated retarder—ideal for downhill and high-speed maneuvers
• Horizontal layout supports low-profile armored vehicle integration
• High torque capacity for ultra-heavy tracked systems under combat loads
• Enhanced electronic controls for shift precision and adaptive terrain response
• Proven Allison reliability and support in global military platforms
• Reduces wear on vehicle service brakes and enhances overall safety and control

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Technical Specifications:

• Model: S9810HR
• Series: Allison Specialty “S” Series
• Transmission Type: Fully automatic planetary transmission with integrated hydraulic retarder
• Mounting Orientation: Horizontal (ideal for low-profile tracked vehicle designs)
• Speeds: 6 forward, 1 reverse
• Torque Converter: High-capacity hydrodynamic torque converter with lock-up clutch
• Integrated Retarder: Yes — hydraulic retarder for enhanced auxiliary braking
• Maximum Input Torque: Up to 3,000 lb-ft (4,068 Nm)
• Gross Vehicle Weight Rating (GVWR): 180,000–200,000+ lbs (81,600–90,700+ kg), application dependent
• Primary Applications:
  • Armored engineering and tactical bridging vehicles
  • Mobile self-propelled artillery systems
  • Tracked combat support and recovery platforms
  • Military logistics carriers requiring auxiliary braking support
• Cooling System:
  • Dual-path oil cooling system for transmission and retarder
  • Compatible with oil-to-water and oil-to-air exchangers
• Lubrication System:
  • Full-flow pressure lubrication with high-efficiency filtration
• Oil Specification: TES-295 or TES-668 synthetic transmission fluid
• Electronic Controls:
  • Allison Transmission Control Module (TCM) with adaptive terrain and load logic
  • Retarder integration with primary braking system
  • Programmable shift strategy via Allison DOC® diagnostics software
• Diagnostics Compatibility:
  • Real-time system health monitoring
  • Fault code logging and preventive maintenance alerts
  • Tracks fluid temperature, wear indicators, retarder engagement, and more
• PTO Capability: Optional, depending on vehicle setup
• Dry Weight: Approx. 2,500–2,700 lbs (1,134–1,225 kg)
• Construction Features:
  • Reinforced military-grade housing for high shock and vibration environments
  • Modular serviceable architecture for quick component access
  • Sealed electronic connectors for moisture and EMI resistance