The Chelsea 871 Series Power Take-Off, part number 871XAQTP-D5XV or 871XAQTPD5XV, is a 10-bolt hydraulic (PowerShift) PTO designed for Allison-transmission applications. The 871 Series carries a continuous torque rating of up to 670 lb-ft (908 N-m) with no derating required for continuous-duty operation. Nine speed ratios and thirteen output options give hydraulic system designers broad flexibility for fire and rescue, truck crane, pumper/cleaner, and refuse applications. The compact housing keeps clearance issues to a minimum, and the ductile iron bearing cap is 117% stronger than the gray iron cap used on predecessor units. Chelsea's o-ring sealing configuration between the housing and bearing cap reduces vibrational effects and improves clamp load. Wet Spline, SmartStart, and Quiet Gear options are available on this unit. Call us to confirm proper fit and configuration for your application.

The 871 Series replaces the Chelsea 870 Series PTO. Relevant Parker Chelsea documents for this series 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. Common markets served include fire and rescue, truck cranes, pumper/cleaner, and refuse trucks.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Continuous torque capacity up to 670 lb-ft (908 N-m) - no derating for continuous duty
Nine speed ratios including low and high speed options
Thirteen output configurations available
Ductile iron bearing cap - 117% stronger than gray iron predecessor
O-ring sealing between housing and bearing cap reduces vibration effects and improves clamp load
Wet Spline pump flange, SmartStart, and Quiet Gear options available on this series
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 (including low and high)
- 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 Type: 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
- Optional Features: Wet Spline, SmartStart, Quiet Gear, Electronic Overspeed Control (EOC)
Additional Information

The 871 Series replaces the Chelsea 870 Series PTO. Relevant Parker Chelsea documents for this series 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. Common markets served include fire and rescue, truck cranes, pumper/cleaner, and refuse trucks.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.