The Chelsea 877LDFJW-M5TZ or 877LDFJWM5TZ is a Power Take-Off assembly from the Chelsea 877 Series, designed for Allison transmission applications with a 10-bolt mounting configuration. The 877 Series uses constant mesh engagement, making it suited for continuous-duty work where the PTO remains engaged throughout operation. Series-rated continuous torque reaches 670 lb-ft, with shaft power of 64 HP at 500 RPM and 128 HP at 1,000 RPM. Pressure lubrication is integrated into the housing, requiring a single hose connection for installation. Output flange options within the 877 Series include SAE B, SAE C, and ISO 7652 pump flanges as well as driveline configurations. Typical applications include refuse trucks, aerial equipment, snow and ice control, fire and rescue, and oil and gas. Call us to confirm proper fit for your specific transmission and truck configuration.
Features
Constant mesh shift type - no clutch disengagement required for continuous operation
10-bolt mounting for Allison transmission applications
Series-rated continuous torque up to 670 lb-ft; 128 HP at 1,000 RPM shaft power
Pressure lubrication integrated into the PTO housing with single-hose installation
Rotatable output flange options to maximize installation clearance
Wet Spline Technology available within the 877 Series to extend PTO and pump shaft service life
Tech Specs
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Shift Type: Constant Mesh
- Continuous Operation: Yes
- Series Continuous Torque: 670 lb-ft (Check application pages for actual torque ratings)
- Series Shaft Power: 64 HP at 500 RPM / 128 HP at 1,000 RPM
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Types: SAE C (1-1/4 in. - 14T), SAE B (7/8 in. - 13T), SAE BB (1 in. - 15T), 1410 Series Companion Flange, DIN 100 Flange, DIN 120 Flange, DIN 5462 Pump Spline
- Lubrication: Pressure Lube with Wet Spline option
- Intermittent Torque: 501+ lb-ft
- Output Power: 56+ HP
Additional Information
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
