The Chelsea 871 Series Power Take-Off Assembly, part number 871XBFJP-G3XV or 871XBFJPG3XV, is a 10-bolt PowerShift (hydraulic) 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. Nine speed ratios and thirteen output configurations give technicians a wide range of installation options, while the compact housing profile reduces clearance conflicts in tight engine compartments. A ductile iron bearing cap rated 117% stronger than gray iron, combined with an O-ring sealing configuration between the housing and bearing cap, addresses the vibrational stress common in modern engine designs. Optional Wet Spline pump flange, SmartStart shock-load reduction, Quiet Gear input, and Electronic Overspeed Control (EOC) are available within the 871 Series platform. Call us to confirm proper fit for your application.
The Chelsea 871 Series replaces the earlier 870 Series PTO, incorporating upgraded bearing cap material and improved sealing geometry. The 871 Series is the only Chelsea PTO to offer all three of Chelsea's high-demand options together: Wet Spline, SmartStart, and Quiet Gear. Typical market applications include fire and rescue apparatus, truck cranes, pumper-cleaner units, and refuse vehicles. Parker reference documents for this series include the 871 Series Parts List (HY25-2871-M1/US) and the 267/281/288/871/878 Series Owner's Manual.
Features
10-bolt PowerShift (hydraulic) mounting configuration for Allison transmissions
Ductile iron bearing cap, 117% stronger than gray iron, for reduced vibration damage
O-ring sealing between housing and bearing cap improves clamp load and sealing integrity
Continuous torque capacity up to 670 lb-ft (908 N-m) with no continuous-duty derating required
Nine speed ratios and thirteen output options to fit a wide range of hydraulic applications
Wet Spline pump flange, SmartStart, Quiet Gear, and Electronic Overspeed Control (EOC) options available
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 N-m)
- Speed Ratios: Nine
- Output Options: Thirteen
- 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
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Continuous Operation: Yes
- Lubrication: Pressure Lube and Wet Spline options
Additional Information
The Chelsea 871 Series replaces the earlier 870 Series PTO, incorporating upgraded bearing cap material and improved sealing geometry. The 871 Series is the only Chelsea PTO to offer all three of Chelsea's high-demand options together: Wet Spline, SmartStart, and Quiet Gear. Typical market applications include fire and rescue apparatus, truck cranes, pumper-cleaner units, and refuse vehicles. Parker reference documents for this series include the 871 Series Parts List (HY25-2871-M1/US) and the 267/281/288/871/878 Series Owner's Manual.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
