The Chelsea 871 Series Power Take-Off 871XFQTP-D5AC or 871XFQTPD5AC is a 10-bolt, hydraulically shifted (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 applications, making it a practical fit for fire and rescue, refuse, pumper cleaner, and truck crane builds. Nine speed ratios and thirteen output options give installers genuine flexibility in matching pump speed and shaft configuration to the driven equipment. 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 the vibrational effects of modern engine designs. Optional Wet Spline, SmartStart, and Quiet Gear features are available on this series. Call us to confirm the correct configuration for your application.
The Chelsea 871 Series replaces the earlier 870 Series PTO, incorporating the ductile iron bearing cap and improved O-ring sealing as standard upgrades. The 871 Series is the only Chelsea PTO to offer all three of the brand's high-demand options together: Wet Spline, SmartStart, and Quiet Gear. Common markets include fire and rescue apparatus, truck cranes, pumper cleaner units, and refuse vehicles. Part number 871XFQTP-D5AC is also referenced as SP871XFQTP-D5AC in some catalog listings.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Continuous torque capacity up to 670 lb-ft (908 N-m) with no continuous-duty derating
Ductile iron bearing cap, 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 for broad application flexibility
Wet Spline pump flange, SmartStart shock-load reduction, Quiet Gear input, and Electronic Overspeed Control (EOC) options available
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque Capacity: 670 lb-ft (908 N-m)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubricant: Pressure Lube (P) or Wet Spline (W)
- Output Shaft Types Available: 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 Available: SAE B Pump Flange, SAE C Pump Flange
- Continuous Operation: Yes
- Options Available: Wet Spline, SmartStart, Quiet Gear, Electronic Overspeed Control (EOC)
Additional Information
The Chelsea 871 Series replaces the earlier 870 Series PTO, incorporating the ductile iron bearing cap and improved O-ring sealing as standard upgrades. The 871 Series is the only Chelsea PTO to offer all three of the brand's high-demand options together: Wet Spline, SmartStart, and Quiet Gear. Common markets include fire and rescue apparatus, truck cranes, pumper cleaner units, and refuse vehicles. Part number 871XFQTP-D5AC is also referenced as SP871XFQTP-D5AC in some catalog listings.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
