The Chelsea 877 Series Power Take-Off, part number 877XEFJW-M5RY or 877XEFJWM5RY, is a 10-bolt constant-mesh PTO built for Allison transmissions. Constant-mesh design suits continuous-run applications such as load-sense hydraulic systems where disengagement is not required. The output shaft is a 1-1/2" 10-spline configuration fitted with a 1410 companion flange, delivering shaft power of 64 HP at 500 RPM and 128 HP at 1000 RPM. Continuous torque is rated at 670 lb-ft (check application pages for actual ratings). Intermittent torque capability exceeds 501 lb-ft. Typical service applications include refuse trucks, aerial units, snow and ice equipment, and fire and rescue vehicles. Call us to confirm proper fit for your specific transmission and application.
Features
10-bolt mounting for Allison transmissions
Constant-mesh shift type for continuous-duty hydraulic applications
Output shaft: 1-1/2" 10-spline with 1410 companion flange
Shaft power: 64 HP at 500 RPM, 128 HP at 1000 RPM
Compact housing height to reduce clearance issues on tight installations
Wet Spline Technology to extend PTO and pump shaft service life
Tech Specs
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Shift Type: Constant Mesh
- Output Shaft Type: 1-1/2" 10-Spline with 1410 Companion Flange
- Shaft Power: 64 HP (500 RPM), 128 HP (1,000 RPM), 48 kW (500 RPM), 95 kW (1,000 RPM)
- Output Power: 56+ HP, 51+ kW
- Continuous Torque: 670 lb-ft (check application pages for actual torque ratings)
- Intermittent Torque: 501+ lb-ft
Additional Information
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
