The Chelsea 871 Series Power Take-Off Assembly, part number 871XAQTP-D5AC or 871XAQTPD5AC, is a 10-bolt hydraulic PowerShift PTO designed for Allison transmissions. The 871 Series delivers continuous-duty torque capacity up to 670 lb-ft (908 N-m) without derating for continuous operation. Nine speed ratios and thirteen output options cover a wide range of hydraulic applications including fire and rescue, refuse, pumper cleaner, and truck crane equipment. A ductile iron bearing cap, rated 117% stronger than gray iron, pairs with an O-ring sealing configuration between the housing and bearing cap to resist vibrational stress from modern engine designs. The compact housing keeps clearance issues to a minimum. Optional Wet Spline pump flange, SmartStart shock-load reduction, Quiet Gear input, and Electronic Overspeed Control (EOC) are available within the series. Call us to confirm the exact configuration for your application.
The Chelsea 871 Series replaces the earlier 870 Series PTO and is the only Chelsea PTO to offer all three premium options - Wet Spline, SmartStart, and Quiet Gear - within a single platform. Typical markets include fire and rescue, refuse, pumper cleaner, and truck crane equipment. Refer to the 871 Series Parts List (HY25-2871-M1/US) and the 267/281/288/871/878 Series Owner's Manual for full application and installation details.
Features
10-bolt hydraulic PowerShift mounting for Allison transmissions
Continuous-duty torque capacity up to 670 lb-ft (908 N-m) - no derating required
Ductile iron bearing cap, 117% stronger than gray iron
O-ring seal between housing and bearing cap reduces vibrational effects and improves clamp load
Nine speed ratios and thirteen output options
Optional Wet Spline pump flange, SmartStart, Quiet Gear input, and Electronic Overspeed Control (EOC)
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
- Speed Ratios: Nine
- Output Options: Thirteen
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Output Shaft Types: SAE B (7/8" - 13T) Pump Spline, SAE BB (1" - 15T) Pump Spline, SAE C (1-1/4" - 14T) Pump Spline, DIN 5462 Pump Spline, 1410 Series Companion Flange, DIN 120 Flange, DIN 100 Flange
- Output Types: SAE B Pump Flange, SAE C Pump Flange
- Lubricant Options: Pressure Lube, Wet Spline
- Continuous Operation: Yes
Additional Information
The Chelsea 871 Series replaces the earlier 870 Series PTO and is the only Chelsea PTO to offer all three premium options - Wet Spline, SmartStart, and Quiet Gear - within a single platform. Typical markets include fire and rescue, refuse, pumper cleaner, and truck crane equipment. Refer to the 871 Series Parts List (HY25-2871-M1/US) and the 267/281/288/871/878 Series Owner's Manual for full application and installation details.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
