The Chelsea 877 Series Power Take-Off, part number 877XDFJP-M5RS or 877XDFJPM5RS, is a constant-mesh, 10-bolt PTO designed for Allison transmissions in high-torque, continuous-duty service. The output shaft is a 1-1/2" 10-tooth spline with a 1410 companion flange. Continuous torque reaches 670 lb-ft (check application pages for actual torque ratings), with intermittent torque rated at 501+ lb-ft. Shaft power is 64 HP at 500 RPM and 128 HP at 1000 RPM. The compact housing limits clearance conflicts, rotatable output flanges offer installation flexibility, and Wet Spline Technology helps extend PTO and pump shaft service life. Suited for refuse, aerial, snow and ice, and defense truck applications. Call us to confirm proper fit for your specific transmission and chassis.
Features
10-bolt constant-mesh design for Allison transmissions, rated for continuous operation without de-rating
1410 companion flange output: 1-1/2" 10-tooth spline with 1410 flange
Continuous torque: 670 lb-ft / 908 Nm (verify actual rating on application pages)
Intermittent torque: 501+ lb-ft; shaft power 64 HP at 500 RPM, 128 HP at 1000 RPM
Compact housing height reduces installation clearance conflicts
Rotatable output flanges and Wet Spline Technology extend PTO and pump shaft service life
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Constant Mesh
- Transmission Manufacturer: Allison
- Output Shaft Type: 1-1/2" 10-Tooth Spline with 1410 Companion Flange
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 64 HP (500 RPM), 128 HP (1000 RPM) / 48 kW (500 RPM), 95 kW (1000 RPM)
- Intermittent Torque: 501+ lb-ft / 501+ Nm
- Continuous Torque: 670 lb-ft / 908 Nm (check application pages for actual torque ratings)
Additional Information
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
