The Chelsea 877LAFJW-M3TS or 877LAFJWM3TS is a 10-bolt, constant-mesh power take-off assembly from the Chelsea 877 Series, designed for Allison transmissions. Constant-mesh operation suits applications that do not require disengagement, such as load-sense pump installations. The series supports continuous operation without de-rating and is rated up to 670 lb-ft continuous torque. Pressure lubrication is integrated into the PTO housing, requiring a single hose connection for a simplified installation. Output options across the 877 Series include SAE B, SAE C, and ISO 7652 pump flanges as well as driveline configurations. 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 Allison transmission and chassis.
Features
10-bolt mounting for Allison transmissions
Constant-mesh design suits load-sense and continuous-duty applications
Integrated pressure lubrication requires a single hose connection
Up to 670 lb-ft continuous torque rating
Rotatable output flanges to maximize installation clearance
Wet Spline Technology helps extend PTO and pump shaft service life
Tech Specs
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Shift Type: Constant Mesh
- Continuous Operation: Yes
- Continuous Torque: 670 lb-ft (see application pages for actual ratings)
- Output Power (series): 56+ HP
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication: Pressure Lube with Wet Spline option
- Series Status: Obsolete (Parker Chelsea 877 Series no longer in production)
Additional Information
The Chelsea 877 Series is noted as obsolete by Parker Chelsea. If you are sourcing 877LAFJW-M3TS for a repair or replacement application, give us a call to discuss availability or any current-production alternatives that may suit your installation.Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
