The Chelsea 871LEFJW-B5TK is a 10-bolt PowerShift (hydraulic shift) Power Take-Off from the 871 Series, designed for Allison transmissions. The 871 Series delivers continuous-duty torque capacity up to 670 lb-ft (908 N-m) with no derating required for continuous operation. Nine speed ratios and thirteen output options provide broad application flexibility across fire and rescue, refuse, pumper/cleaner, and truck crane installations. A ductile iron bearing cap rated 117% stronger than gray iron resists the vibrational loads of modern engine designs, while an O-ring sealing configuration between the housing and bearing cap improves clamp load and reduces vibration-related wear. Wet Spline lubrication extends pump flange and output shaft service life. SmartStart and Electronic Overspeed Control (EOC) options are available. Also referenced as 871LEFJWB5TK. Call us to confirm proper fit for your application.

The Chelsea 871 Series replaces the earlier 870 Series PTO. It is the only Chelsea PTO to offer all three of the following options on one platform: Wet Spline, SmartStart, and Quiet Gear. Markets served include fire and rescue, truck cranes, pumper/cleaner, and refuse applications.
Features
10-Bolt PowerShift (hydraulic) mounting for Allison transmissions
Ductile iron bearing cap, 117% stronger than gray iron
Continuous-duty torque capacity up to 670 lb-ft (908 N-m)
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Nine speed ratios and thirteen output options
Wet Spline pump flange, SmartStart, and Electronic Overspeed Control (EOC) options available
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque Capacity: 670 lb-ft (908 N-m)
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubrication: Pressure Lube and Wet Spline
- Continuous Operation: Yes
Additional Information

The Chelsea 871 Series replaces the earlier 870 Series PTO. It is the only Chelsea PTO to offer all three of the following options on one platform: Wet Spline, SmartStart, and Quiet Gear. Markets served include fire and rescue, truck cranes, pumper/cleaner, and refuse applications.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.