The Chelsea 878 Series Power Take-Off Assembly, part number 878XEFJP-M5RY or 878XEFJPM5RY, is a constant mesh PTO engineered for Allison and CAT 10-bolt transmissions. The 878 Series improves on the proven 877 Series platform with a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between the housing and bearing cap for better clamp load, and a single continuous duty torque rating. Rotatable cast-iron flanges reduce interference clearance issues, and driveline outputs include a positive stop to protect oil seals. Nine speed ratios cover both low and high speed applications. A hydraulic hose is included. Call us to confirm proper fit for your application.
Features
Ductile iron bearing cap - 117% stronger than gray iron for greater durability
O-ring sealing configuration between housing and bearing cap improves clamp load and reduces vibrational effects
Single, continuous duty torque rating simplifies application selection
Constant mesh design with cast iron housing
Rotatable cast-iron flanges reduce interference clearance issues
Nine speed ratios including low and high speeds; hydraulic hose included
Tech Specs
- Transmission Fit: Allison and CAT 10-Bolt
- Shift Type: Constant Mesh
- Continuous Operation: Yes
- Lubricant Options: Pressure Lube or Wet Spline (Wet Spline provides 7 to 10 times greater shaft life)
- Output Shaft Types: 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 Types: SAE B Pump Flange, SAE C Pump Flange
- Speed Ratios: Nine ratios including low and high speeds
- NMFC Code: 125820 - Hydraulic PTOs, Pumps, Motors, etc.
Additional Information
Parts Manual: Chelsea 878 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
