The Chelsea 871 Series Power Take-Off, part number 871XDQTP-B5XV or 871XDQTPB5XV, is a 10-bolt PowerShift (hydraulic) PTO designed for Allison transmissions. The series delivers continuous torque capacity 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 broad flexibility across fire and rescue, refuse, pumper cleaner, and truck crane vocations. A ductile iron bearing cap rated 117% stronger than gray iron, combined with an O-ring sealing configuration between the housing and bearing cap, addresses the vibrational loads common in modern engine designs. The compact housing height reduces clearance conflicts during installation. Optional Wet Spline pump flange, SmartStart, and Quiet Gear configurations are available. Call us to confirm the right configuration for your application.
The 871 Series replaces the earlier Chelsea 870 Series PTO. Reference documents include the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US). Typical vocational markets include fire and rescue, truck cranes, pumper cleaner, and refuse applications.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Ductile iron bearing cap, 117% stronger than gray iron
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Continuous torque capacity up to 670 lb-ft (908 N-m) with no continuous-duty derating required
Nine speed ratios and thirteen output options
Optional Wet Spline pump flange, SmartStart shock-load reduction, Quiet Gear input, and Electronic Overspeed Control (EOC)
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque Capacity: up to 670 lb-ft / 908 N-m (verify actual rating on application page)
- Speed Ratios: Nine
- Output Options: Thirteen
- 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
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Lubrication: Pressure Lube and Wet Spline options
- Continuous Operation: Yes
- Optional Features: Wet Spline pump flange, SmartStart, Quiet Gear input, Electronic Overspeed Control (EOC)
Additional Information
The 871 Series replaces the earlier Chelsea 870 Series PTO. Reference documents include the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US). Typical vocational markets include fire and rescue, truck cranes, pumper cleaner, and refuse applications.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
