The Chelsea 878XDFJW-M5RS or 878XDFJWM5RS is a constant mesh Power Take-Off assembly from the Chelsea 878 Series, engineered to mount on Allison and CAT 10-bolt transmissions. The 878 Series represents an advancement over the proven 877 Series design, with a ductile iron bearing cap rated 117% stronger than gray iron and an O-ring sealing configuration between the housing and bearing cap to improve clamp load and resist vibration damage from modern engine designs. Rotatable cast iron flanges reduce interference clearance issues, and the wet spline lubrication option extends shaft life 7 to 10 times. Nine speed ratios cover both low and high speed applications. Markets served include snow and ice, vacuum, aerial, and refuse. Call us to confirm proper fit for your specific transmission application.
Features
Constant mesh design with cast iron housing fits Allison and CAT 10-bolt transmissions
Ductile iron bearing cap is 117% stronger than gray iron for improved durability
O-ring sealing configuration between housing and bearing cap reduces vibration effects and improves clamp load
Rotatable cast iron flanges reduce interference clearance issues
Wet spline lubrication option provides 7 to 10 times greater shaft life
Nine speed ratios including both low and high speeds; hose included
Tech Specs
- Shift Type: Constant Mesh
- Mounting Type: 10-Bolt
- Transmission Compatibility: Allison and CAT
- Continuous Operation: Yes
- Lubricant Options: Pressure Lube (P), Wet Spline (W)
- Speed Ratios: Nine (including low and high)
- Bearing Cap Material: Ductile Iron
- Housing Material: Cast Iron
Additional Information
Parts Manual: Chelsea 878 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
