The Chelsea 871 Series Power Take-Off Assembly, part number 871XEFJP-B5RY or 871XEFJPB5RY, is a 10-bolt hydraulic PowerShift PTO designed for Allison transmission applications. The 871 Series carries a continuous torque rating up to 670 lb-ft (908 N-m) with no derating required for continuous-duty use. A ductile iron bearing cap delivers 117% greater strength than gray iron, while an O-ring sealing configuration between the housing and bearing cap reduces vibration-related stress and improves clamp load. Nine speed ratios and thirteen output options give you broad flexibility across fire and rescue, refuse, truck crane, and pumper-cleaner equipment. The 871 Series also supports Chelsea's Wet Spline, SmartStart, and Quiet Gear options in a single platform. Available from Pro Gear and Transmission - call to confirm proper fit for your application.
The 871 Series replaces the earlier Chelsea 870 Series PTO with upgraded materials and sealing. Applications include fire and rescue, refuse trucks, truck cranes, and pumper-cleaner vehicles. Supporting documentation includes the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US). The 871 Series is the only Chelsea PTO platform to offer all three of Chelsea's featured options - Wet Spline, SmartStart, and Quiet Gear - in a single assembly.
Features
10-bolt mounting, hydraulic PowerShift (PowerShift) shift type for Allison transmissions
Ductile iron bearing cap, 117% stronger than gray iron
Continuous torque rating up to 670 lb-ft (908 N-m), no derating required for continuous duty
O-ring sealing configuration between housing and bearing cap reduces vibration effects and improves clamp load
Nine speed ratios and thirteen output options for flexible installation
Wet Spline pump flange, SmartStart, and Quiet Gear options available on this platform; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 N-m) - check application pages for actual torque ratings
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Speed Ratios: Nine
- Output Options: Thirteen
- Continuous Operation: Yes
- Lubricant Options: Pressure Lube, Wet Spline
- 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
Additional Information
The 871 Series replaces the earlier Chelsea 870 Series PTO with upgraded materials and sealing. Applications include fire and rescue, refuse trucks, truck cranes, and pumper-cleaner vehicles. Supporting documentation includes the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US). The 871 Series is the only Chelsea PTO platform to offer all three of Chelsea's featured options - Wet Spline, SmartStart, and Quiet Gear - in a single assembly.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
