The Chelsea 871 Series Power Take-Off, part number 871XGFJP-B5RS or 871XGFJPB5RS, is a 10-bolt PowerShift (hydraulic shift) PTO designed for Allison transmissions. The series carries a continuous torque rating up to 670 lb-ft (908 N-m) with no derating required for continuous-duty applications. Nine speed ratios and thirteen output options give installers a wide range of configurations for fire and rescue, refuse, pumper/cleaner, and truck crane work. The compact housing keeps overall height down to reduce clearance conflicts during installation. The 871 Series supersedes the Chelsea 870 Series and is the only Chelsea PTO to offer all three premium options: Wet Spline, SmartStart, and Quiet Gear. Call us to confirm proper fit for your specific transmission and application.
The Chelsea 871 Series is suited for demanding vocational applications including fire and rescue, truck cranes, pumper/cleaner units, and refuse trucks. The 871 Series is the only Chelsea PTO line to combine all three advanced options - Wet Spline, SmartStart, and Quiet Gear - in a single platform. SmartStart reduces shock load at start-up, extending drivetrain life in high-inertia applications. Electronic Overspeed Control (EOC) is available to protect downstream driven equipment from overspeed events. Relevant Parker Chelsea documentation includes the 871 Series Parts List (HY25-2871-M1/US), the 267/281/288/871/878 Series Owner's Manual, and 871 Series Sales Literature.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Continuous torque capacity up to 670 lb-ft (908 N-m) - no continuous-duty derating required
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap reduces vibrational 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; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Compatibility: Allison
- Continuous Torque: 670 lb-ft (908 N-m)
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubricant System: Pressure Lube and 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
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Continuous Operation: Yes
- Supersedes: Chelsea 870 Series
Additional Information
The Chelsea 871 Series is suited for demanding vocational applications including fire and rescue, truck cranes, pumper/cleaner units, and refuse trucks. The 871 Series is the only Chelsea PTO line to combine all three advanced options - Wet Spline, SmartStart, and Quiet Gear - in a single platform. SmartStart reduces shock load at start-up, extending drivetrain life in high-inertia applications. Electronic Overspeed Control (EOC) is available to protect downstream driven equipment from overspeed events. Relevant Parker Chelsea documentation includes the 871 Series Parts List (HY25-2871-M1/US), the 267/281/288/871/878 Series Owner's Manual, and 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.
