The Chelsea 877XDFJP-M3AC or 877XDFJPM3AC is a constant-mesh power take-off engineered for 10-bolt Allison transmission applications with high torque and continuous-duty requirements. The output shaft is a 1-1/2" 10-tooth spline fitted with a 1410 series companion flange. Continuous torque rating reaches 670 lb-ft (908 Nm); intermittent torque is rated at 501+ lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. The compact housing reduces installation clearance conflicts, and rotatable output flanges give added positioning flexibility at install. Wet Spline Technology is incorporated to extend the service life of both the PTO and the mating pump shaft. Typical 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 chassis configuration.
Features
10-bolt mounting for Allison transmission applications
Constant mesh design suits continuous-duty and load-sense pump setups
Output shaft: 1-1/2" 10-tooth spline with 1410 series companion flange
Continuous torque: 670 lb-ft (908 Nm); intermittent torque: 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Compact housing height, rotatable output flanges, and Wet Spline Technology reduce clearance conflicts and extend pump shaft life
Tech Specs
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Shift Type: Constant Mesh
- Output Shaft Type: 1-1/2" 10-tooth spline with 1410 series companion flange
- Continuous Torque: 670 lb-ft (908 Nm) - check application pages for actual torque ratings
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1,000 RPM (48 kW at 500 RPM, 95 kW at 1,000 RPM)
Additional Information
The Chelsea 877 Series is rated for continuous operation, meaning no de-rating is required for sustained duty cycles. Eight internal gear ratios are available across the series to match a wide range of output speed requirements. Pressure lubrication is integrated directly into the PTO housing and requires a single hose connection for installation. The series is suited for demanding vocational applications including refuse, aerial, snow and ice, oil and gas, and fire and rescue trucks. Parker Chelsea lists the 877 Series as obsolete - call Pro Gear and Transmission to confirm current availability and to identify any applicable replacement or successor unit for your application.Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
