The Chelsea 878 Series Power Take-Off, part number 878XKFJP-M3XV or 878XKFJPM3XV, is a constant-mesh PTO engineered for Allison and CAT 10-bolt transmissions. The 878 Series builds on the proven 877 Series platform with a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between housing and bearing cap for improved clamp load, and steel clutch-pack discs with 80% greater thickness to handle the vibrational demands of modern engine designs. The cast iron housing keeps costs practical for high-cycle vocational work. Output options span SAE B, SAE BB, and SAE C pump splines, companion flanges, and DIN flange configurations. Nine speed ratios cover both low and high speed requirements, and the wet spline lubrication option extends shaft service life by 7 to 10 times. A hydraulic hose is included. Common applications include refuse, vacuum, aerial, and snow and ice equipment. Call us to confirm proper fit for your specific transmission and application.
Features
Ductile iron bearing cap - 117% stronger than gray iron for reduced vibration damage
O-ring sealing configuration between housing and bearing cap improves clamp load
Single continuous-duty torque rating - no derating for sustained operation
Nine speed ratios available including low and high speeds
Rotatable cast-iron flanges reduce interference clearance issues; positive stop eliminates oil seal damage on driveline outputs
Wet spline lubrication option extends shaft life 7 to 10 times; hydraulic hose included
Tech Specs
- Shift Type: Constant Mesh
- Transmission Fitment: Allison and CAT 10-Bolt
- Continuous Torque: 670 lb-ft (908 Nm) - check application pages for actual torque rating
- 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
- Output Flange Options: 1410 Series Companion Flange, DIN 120 Flange, DIN 100 Flange
- Output Type: SAE B Pump Flange, SAE C Pump Flange
- Speed Ratios: Nine ratios including low and high
- Continuous Operation: Yes
- Lubrication: Pressure Lube or Wet Spline options
- Hose: Included
Additional Information
Parts Manual: Chelsea 878 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
