The Chelsea 877XFQTP-M3AB or 877XFQTPM3AB is a constant-mesh power take-off from the Chelsea 877 Series, designed for 10-bolt Allison transmission applications with high torque demands and continuous-duty workloads. The output shaft is a 1-1/2" 10-spline configuration with a 1410 companion flange. Continuous torque reaches 670 lb-ft (908 Nm), with intermittent torque rated at 501+ lb-ft. Shaft power is 64 HP at 500 RPM and 128 HP at 1,000 RPM. The compact housing reduces installation clearance concerns, and rotatable output flanges give installers additional positioning flexibility. Wet Spline Technology is integrated to extend service life at the PTO and pump shaft interface. 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.
Features
10-bolt mounting for Allison transmission applications
Constant-mesh shift type suits continuous-duty, no-disengage operation
1-1/2" 10-spline output shaft with 1410 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
Wet Spline Technology and rotatable output flanges for extended service life and installation flexibility
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
- Continuous Torque: 670 lb-ft (908 Nm) - check application pages for actual torque ratings
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1,000 RPM (48 kW at 500 RPM, 95 kW at 1,000 RPM)
- Output Power: 56+ HP (51+ kW)
Additional Information
The Chelsea 877 Series is suited for demanding continuous-duty applications including refuse trucks, aerial equipment, snow and ice, oil and gas, and fire and rescue vehicles. Eight internal gear ratios are available across the 877 Series, offering a range of output speeds to match hydraulic system requirements. Pressure lubrication is integrated into the PTO housing and requires a single hose connection for a simplified installation. Two assembly arrangements are offered within the series to maximize installation clearance in tight chassis environments. Parker Chelsea references supporting documents including the 877 Series Owner's Manual (HY25-1380-M1_US) and Parts List (HY25-2870-M1_US) for service and installation guidance. Part number 877XFQTP-M3AB is also referenced as SP877XFQTP-M3AB in some catalog sources.Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
