The Chelsea 878XDFJW-M3RZ or 878XDFJWM3RZ is a constant mesh Power Take-Off assembly from Chelsea's 878 Series, engineered to mount on Allison 10-bolt transmissions. The series delivers up to 670 lb-ft continuous torque in a compact package, with a ductile iron bearing cap rated 117% stronger than gray iron. An O-ring sealing configuration between the housing and bearing cap improves clamp load and resists vibrational stress from modern engine designs. Rotatable cast-iron flanges reduce interference clearance issues, and driveline outputs include a positive stop to prevent oil seal damage. The wet spline lubrication option extends shaft life by 7 to 10 times. Nine speed ratios cover both low and high speed applications. A hose is included. Call us to confirm proper fit for your application.
Features
Constant mesh design with cast iron housing for Allison 10-bolt transmissions
Ductile iron bearing cap, 117% stronger than gray iron
O-ring sealing between housing and bearing cap improves clamp load and vibration resistance
Rotatable cast-iron flanges reduce interference clearance issues
Positive stop on driveline outputs eliminates oil seal damage from coupling
Wet spline lubrication option extends shaft life 7 to 10 times; hose included
Tech Specs
- Shift Type: Constant Mesh
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 Nm) - check application pages for actual torque rating
- Speed Ratios: Nine (low and high range included)
- Output Shaft Options: SAE B (7/8 in. - 13T) Pump Spline, SAE BB (1 in. - 15T) Pump Spline, SAE C (1-1/4 in. - 14T) Pump Spline, DIN 5462 Pump Spline, 1410 Series Companion Flange, DIN 120 Flange, DIN 100 Flange
- Output Flange Options: SAE B Pump Flange, SAE C Pump Flange
- Lubrication: Pressure Lube or Wet Spline
- Continuous Operation: Yes
Additional Information
Parts Manual: Chelsea 878 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
