The Chelsea 878 Series Power Take-Off, part number 878XEFJP-M3AB or 878XEFJPM3AB, is a constant mesh PTO engineered for Allison and CAT 10-bolt transmissions. The ductile iron bearing cap is 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improves clamp load while reducing vibrational effects from modern engine designs. Steel disc thickness within the clutch pack has been increased by 80% over the predecessor 877 Series design. The 878 Series delivers up to 670 lb-ft (908 Nm) in a single continuous-duty torque rating, covering both intermittent and continuous applications. Nine speed ratios span low and high ranges. Rotatable cast-iron flanges reduce clearance and interference issues, and driveline outputs include a positive stop to prevent oil seal damage. A Wet Spline Lubrication option extends shaft life 7 to 10 times. Markets served include snow and ice, vacuum, aerial, and refuse applications. Call us to confirm proper fit for your application.
Features
Ductile iron bearing cap, 117% stronger than gray iron, reduces vibrational damage
O-ring sealing configuration between housing and bearing cap improves clamp load
Single continuous-duty torque rating up to 670 lb-ft (908 Nm)
Nine speed ratios covering low and high speeds
Rotatable cast-iron flanges reduce interference and clearance issues
Wet Spline Lubrication option for 7 to 10 times greater shaft life; hydraulic hose included
Tech Specs
- Shift Type: Constant Mesh
- Transmission Fitment: Allison and CAT 10-bolt
- Continuous Torque Rating: 670 lb-ft (908 Nm)
- Speed Ratios: Nine (includes low and high)
- Lubrication: Pressure Lube or Wet Spline options
- Continuous Operation: Yes
- 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
- Housing Material: Cast Iron
- Bearing Cap Material: Ductile Iron
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
Additional Information
Parts Manual: Chelsea 878 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
