The Chelsea 871 Series Power Take-Off Assembly, part number 871XDFJW-D3RY or 871XDFJWD3RY, is a 10-bolt hydraulic PowerShift PTO designed for Allison transmissions. The 871 Series delivers continuous torque capacity up to 670 lb-ft (908 N-m) with no derating required for continuous-duty operation, making it a practical choice for fire and rescue apparatus, refuse trucks, truck cranes, and pumper cleaner equipment. Nine speed ratios and thirteen output options give you broad flexibility across pump and auxiliary drive applications. This unit replaces the Chelsea 870 Series and incorporates a ductile iron bearing cap, o-ring sealing between the housing and bearing cap, and a wet spline pump flange to extend PTO and pump shaft service life. Call us to confirm proper fit for your specific transmission and application.
The 871 Series is the only Chelsea PTO to offer all three of Chelsea's high-demand solutions together: Wet Spline, SmartStart, and Quiet Gear. The SmartStart option reduces shock load at start-up for applications where abrupt engagement causes equipment stress. Electronic Overspeed Control (EOC) is available to protect driven equipment from overspeed events. Applicable Parker Chelsea documents include the 267/281/288/871/878 Series Owner's Manual, the 871 Series Parts List (HY25-2871-M1/US), and the 871 Series Sales Literature.
Features
10-bolt mounting, hydraulic PowerShift (PowerShift) operation for Allison transmissions
Continuous torque capacity up to 670 lb-ft / 908 N-m with no continuous-duty derating required
Ductile iron bearing cap rated 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap reduces vibration effects and improves clamp load
Nine speed ratios and thirteen output options including SAE B, SAE BB, and SAE C pump spline configurations
Wet Spline pump flange, SmartStart, and Quiet Gear options available to match application demands
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 (48 kW at 500 RPM / 95 kW at 1000 RPM)
- 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
- Lubricant System: Pressure Lube and Wet Spline
- Continuous Operation: Yes
- Replaces: Chelsea 870 Series
Additional Information
The 871 Series is the only Chelsea PTO to offer all three of Chelsea's high-demand solutions together: Wet Spline, SmartStart, and Quiet Gear. The SmartStart option reduces shock load at start-up for applications where abrupt engagement causes equipment stress. Electronic Overspeed Control (EOC) is available to protect driven equipment from overspeed events. Applicable Parker Chelsea documents include the 267/281/288/871/878 Series Owner's Manual, the 871 Series Parts List (HY25-2871-M1/US), and the 871 Series Sales Literature.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
