Allison S9810M

The Allison S9810M is a robust, heavy-duty automatic transmission specifically engineered for extreme-duty tracked military vehicles requiring high input torque capacity and enhanced reliability in combat environments. As a member of the Allison “S” Series, the S9810M is horizontally mounted and features the “M” (military-grade) designation, which indicates ruggedized construction for extended service life under harsh battlefield conditions, including high shock, dust, vibration, and thermal extremes.

Designed to support gross vehicle weights exceeding 190,000 lbs, the S9810M delivers smooth, electronically managed shifts and continuous torque flow across a 6-speed gear range. Its planetary gearset and high-capacity torque converter are optimized for high-load, low-speed maneuvering and full-power gear changes required in combat and engineering vehicles such as bridge layers, self-propelled artillery, and tracked recovery units.

The S9810M is ideal for defense operations where mission reliability, drivetrain serviceability, and battlefield durability are critical. It integrates easily into low-clearance armored vehicle platforms thanks to its horizontal layout, and its modular design enables field servicing and reduced vehicle downtime.

Key Benefits of the S9810M Transmission

• Horizontal layout enables low-profile integration into armored hull designs
• Military-grade construction built for combat stress and harsh environments
• Handles extremely high torque and vehicle weight with consistent reliability
• Smooth power delivery and adaptive shifting optimize vehicle control and fuel use
• Designed for long service life with simplified field maintenance procedures
• Compatible with leading OEM military tracked platforms

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Technical Specifications:

• Model: S9810M
• Series: Allison Specialty “S” Series
• Transmission Type: Fully automatic planetary transmission
• Mounting Orientation: Horizontal (H-type architecture for low-profile vehicle hulls)
• Speeds: 6 forward, 1 reverse
• Torque Converter: High-strength hydrodynamic torque converter with lock-up capability
• Integrated Retarder: Not included (available in S9810MR variant)
• 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), depending on application
• Primary Applications:
  • Tracked armored vehicles
  • Bridge layers and military engineer vehicles
  • Self-propelled artillery and launch systems
  • Heavy tracked logistics and recovery platforms
• Cooling System:
  • High-efficiency external cooling required
  • Compatible with oil-to-air or oil-to-water heat exchangers
• Lubrication System:
  • Full-pressure internal lubrication with multi-stage filtration
• Oil Specification: TES-295 or TES-668 approved synthetic fluid
• Electronic Controls:
  • Allison TCM (Transmission Control Module) with adaptive shift logic
  • Terrain- and load-sensitive shift scheduling
  • Diagnostic-ready with Allison DOC® software compatibility
• Diagnostics & Monitoring:
  • Real-time temperature and clutch wear monitoring
  • Integrated fault logging and predictive maintenance alerts
• PTO Capability: Optional (varies by installation)
• Dry Weight: Approx. 2,500–2,700 lbs (1,134–1,225 kg)
• Military Durability Enhancements:
  • Reinforced alloy housing for extreme shock and impact loads
  • Ruggedized seals and fasteners for contamination resistance
  • Electronics hardened against vibration, moisture, and EMI
  • Field-serviceable modular construction