The Chelsea 878 Series Power Take-Off Assembly, part number 878XCFJW-M3RS or 878XCFJWM3RS, is a constant mesh PTO built to mount on Allison and CAT 10-bolt transmissions. The 878 Series carries a single continuous-duty torque rating of up to 670 lb-ft, making it one of the highest-capacity units in its package size. The series features a ductile iron bearing cap rated 117% stronger than the gray iron cap used in the predecessor 877 Series, an o-ring seal between the housing and bearing cap for improved clamp load, and clutch pack steel discs thickened by 80% to handle the vibrational demands of modern engine designs. A wet spline lubrication option is available within the series for extended shaft life. Call us to confirm proper fit for your specific transmission and application.
Features
Constant mesh design fits Allison and CAT 10-bolt transmissions
Series torque rating up to 670 lb-ft in continuous and intermittent duty
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring seal between housing and bearing cap for improved clamp load
Clutch pack steel disc thickness increased 80% over 877 Series design
Rotatable cast iron flanges reduce interference and clearance issues
Tech Specs
- Shift Type: Constant Mesh
- Mounting Type: 10-Bolt (Allison and CAT transmissions)
- Continuous Torque (Series): up to 670 lb-ft / 908 Nm (verify actual rating on application page)
- Output Shaft Options (Series): SAE B 7/8 in. 13-tooth pump spline, SAE BB 1 in. 15-tooth pump spline, SAE C 1-1/4 in. 14-tooth pump spline, DIN 5462 pump spline, 1410 Series companion flange, DIN 120 flange, DIN 100 flange
- Output Flange Options (Series): SAE B pump flange, SAE C pump flange
- Continuous Operation: Yes
- Lubrication: Pressure lube (P) or wet spline (W) options available
