The Chelsea 267SDFJW-M5RY or 267SDFJWM5RY is a 267 Series constant mesh power take-off built for Allison automatic transmissions. It mounts on a 10-bolt pattern and delivers up to 335 lb-ft (454 Nm) intermittent torque, with shaft power rated at 32 HP at 500 RPM and 64 HP at 1,000 RPM. The output shaft is a 1-1/4" round design with keyway. The 267 Series exceeds the torque capacity of a comparable 6-bolt PTO while offering tighter sealing from the 10-bolt pattern, making it a practical choice for variable displacement piston pumps on yard jockey trucks, small refuse trucks, and snow plow trucks. The 360-degree rotatable output flange helps clear tight engine bay obstacles. Call us to confirm proper fit for your specific transmission and pump setup.
The Chelsea 267 Series is available in five speed ratios and multiple output configurations, including SAE B, SAE C, and ISO 7652 pump flanges, as well as driveline outputs. Applications include snow plow trucks, small refuse trucks, yard jockey trucks, aerial equipment, and military vehicles. The series supports continuous operation with a 30% de-rating. The optional SuperTorque gears provide up to 20% more torque capacity than the standard 267 Series build.
Features
10-bolt mounting pattern fits Allison automatic transmissions
Constant mesh (non-shiftable) design suited for continuous-duty mobile applications
Intermittent torque rating: 335 lb-ft (454 Nm) -- check application pages for your specific configuration
Shaft power: 32 HP at 500 RPM, 64 HP at 1,000 RPM
1-1/4" round output shaft with keyway
360-degree rotatable output flange for improved clearance; SuperTorque gears available for up to 20% additional torque capacity
Wet spline or greaseable shaft options available to extend PTO and pump shaft service life
Tech Specs
- MOUNTING TYPE: 10-Bolt
- SHIFT TYPE: Constant Mesh
- TRANSMISSION MANUFACTURER: Allison
- OUTPUT SHAFT TYPE: 1-1/4" Round with Key
- INTERMITTENT TORQUE: 335 lb-ft / 454 Nm (Check Application Pages for Actual Torque Ratings)
- OUTPUT POWER: 56+ HP / 41-50 kW
- SHAFT POWER: 32 HP (500 RPM), 64 HP (1,000 RPM) / 24 kW (500 RPM), 48 kW (1,000 RPM)
Additional Information
The Chelsea 267 Series is available in five speed ratios and multiple output configurations, including SAE B, SAE C, and ISO 7652 pump flanges, as well as driveline outputs. Applications include snow plow trucks, small refuse trucks, yard jockey trucks, aerial equipment, and military vehicles. The series supports continuous operation with a 30% de-rating. The optional SuperTorque gears provide up to 20% more torque capacity than the standard 267 Series build.
Parts Manual: Chelsea 267 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
