The Chelsea 871 Series Power Take-Off, part number 871XFQTP-D3AC or 871XFQTPD3AC, is a 10-bolt hydraulic PowerShift PTO designed for Allison transmission applications. The 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 options give installers wide flexibility across fire and rescue, refuse, pumper/cleaner, and truck crane applications. The ductile iron bearing cap is 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improves clamp load while reducing damage from engine vibration. Optional Wet Spline pump flange, SmartStart, and Quiet Gear configurations are available within the 871 Series. The 871 Series replaces the earlier Chelsea 870 Series PTO. Call us to confirm the right configuration for your application.
The Chelsea 871 Series is the only Chelsea PTO to offer all three premium options together: Wet Spline pump flange for extended PTO and pump shaft life, SmartStart for reduced shock load at start-up, and Quiet Gear input. Electronic Overspeed Control (EOC) is also available to protect driven equipment. The compact housing design reduces clearance constraints during installation. This series is suited for fire and rescue trucks, refuse vehicles, pumper/cleaner units, and truck cranes. Reference documents for this series include the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US).
Features
10-bolt hydraulic PowerShift mounting for Allison transmissions
Ductile iron bearing cap, 117% stronger than gray iron
Continuous torque capacity up to 670 lb-ft (908 N-m), no derating for continuous duty
Nine speed ratios and thirteen output options
O-ring sealing between housing and bearing cap reduces vibrational damage and improves clamp load
Optional Wet Spline pump flange, SmartStart shock-load reduction, Quiet Gear input, and Electronic Overspeed Control (EOC) available
Tech Specs
- Mounting: 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 Type: SAE B Pump Flange, SAE C Pump Flange
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Continuous Operation: Yes
- Lubricant: Pressure Lube (P) or Wet Spline (W)
- Replaces: Chelsea 870 Series PTO
Additional Information
The Chelsea 871 Series is the only Chelsea PTO to offer all three premium options together: Wet Spline pump flange for extended PTO and pump shaft life, SmartStart for reduced shock load at start-up, and Quiet Gear input. Electronic Overspeed Control (EOC) is also available to protect driven equipment. The compact housing design reduces clearance constraints during installation. This series is suited for fire and rescue trucks, refuse vehicles, pumper/cleaner units, and truck cranes. Reference documents for this series include the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US).
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
