The Allison M5610AR is a rugged, heavy-duty automatic transmission specifically engineered for demanding military and off-road applications. A variant of the M5610A, the “AR” suffix denotes the inclusion of an integrated hydraulic retarder, a vital component for vehicles operating in mountainous terrain or requiring enhanced braking performance. Like its base model, the M5610AR is built to endure severe-duty conditions, offering six forward speeds, one reverse, and a lock-up torque converter for improved fuel efficiency and driveline durability. Its fully electronic control system ensures smooth and precise gear shifts under varying load conditions, and its compatibility with advanced diagnostic tools makes maintenance and fleet management more efficient. Designed to handle high input torque and harsh operating environments, the M5610AR is a proven solution in military transport trucks, tactical logistics platforms, and other specialty vehicles where braking support and drivetrain protection are paramount.
Key Benefits of the M5610AR
- Enhances vehicle safety and control during descents with integrated retarder
- Reduces wear and tear on service brakes
- Fully automatic operation improves driver focus and vehicle uptime
- Proven in high-demand, high-risk environments
- Simplified diagnostics for efficient maintenance
- High torque handling for heavy-load applications
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Technical Specifications:
- Model: M5610AR
- Series: Allison 5000 Series
- Type: Fully automatic planetary transmission with retarder
- Integrated Retarder: Yes — hydraulic, for extended brake life and improved downhill control
- Number of Speeds: 6 forward, 1 reverse
- Control System: Allison electronic controls (with retarder integration)
- Torque Converter: Integral with lock-up clutch
- Maximum Input Torque: Approx. 1,475 lb-ft (2,000 Nm)
- Gross Vehicle Weight Rating (GVWR): Up to 80,000 lbs (36,287 kg) depending on configuration
- Applications:
- Military heavy tactical vehicles (e.g., HEMTT, PLS)
- Off-road and mining trucks
- Emergency and specialty braking-reliant vehicles
- Input Speed Range: Up to 3,300 RPM
- Oil Type: Allison-approved TES-295 or TES-668 synthetic transmission fluid
- Cooling Requirements: External oil cooler required (due to retarder heat generation)
- Mounting Configuration: SAE #1 or #2 housing available
- PTO Capability: Yes (optional side- or rear-mount PTO provision)
- Built-In Diagnostics: Allison DOC® compatible for real-time service and troubleshooting
- Electronic Retarder Control: Integrated into transmission ECU
- Weight (Dry): Approx. 1,050 lbs (476 kg), heavier due to retarder system
- Shift Inhibition & Safety Logic: Included
- Output Retarder Torque: Approx. 1,500–2,000 lb-ft braking torque (varies with cooling)
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