The Chelsea 871 Series Power Take-Off, part number 871XEQTP-D5AC or 871XEQTPD5AC, 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 use. Nine speed ratios and thirteen output options give installers wide flexibility across fire and rescue, truck crane, pumper cleaner, and refuse applications. A ductile iron bearing cap rated 117% stronger than gray iron and an O-ring sealing configuration between the housing and bearing cap address the vibrational loads common in modern engine designs. The compact housing height reduces clearance problems during installation. Electronic Overspeed Control (EOC), SmartStart, Wet Spline, and Quiet Gear options are available within the 871 Series. The 871 Series replaces the earlier Chelsea 870 Series PTO. Call us to confirm proper fit for your specific transmission and application.
The Chelsea 871 Series is the only Chelsea PTO to offer all three of the brand's high-demand options - Wet Spline, SmartStart, and Quiet Gear - in a single platform. Wet Spline lubrication on the pump flange extends service life on both the PTO output and the driven pump shaft. SmartStart reduces shock load at engagement, making it well suited for applications where abrupt start-up loads are a concern. Electronic Overspeed Control (EOC) provides an added layer of protection for driven equipment. The series is documented in the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US). Markets served include fire and rescue, truck cranes, pumper cleaner, and refuse vehicles.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Continuous torque capacity up to 670 lb-ft (908 N-m) - no continuous-duty derating required
Nine speed ratios including low and high speeds; thirteen output options
Ductile iron bearing cap - 117% stronger than gray iron predecessor
O-ring sealing between housing and bearing cap reduces vibrational effects and improves clamp load
Wet Spline pump flange, SmartStart, Quiet Gear, and Electronic Overspeed Control (EOC) options available
Tech Specs
- Mounting Type: 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 1,000 RPM
- Speed Ratios: Nine (includes 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 Flange Types: SAE B Pump Flange, SAE C Pump Flange
- Lubrication: Pressure Lube and Wet Spline
- Continuous Operation: Yes
- Replaces: Chelsea 870 Series PTO
Additional Information
The Chelsea 871 Series is the only Chelsea PTO to offer all three of the brand's high-demand options - Wet Spline, SmartStart, and Quiet Gear - in a single platform. Wet Spline lubrication on the pump flange extends service life on both the PTO output and the driven pump shaft. SmartStart reduces shock load at engagement, making it well suited for applications where abrupt start-up loads are a concern. Electronic Overspeed Control (EOC) provides an added layer of protection for driven equipment. The series is documented in the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US). Markets served include fire and rescue, truck cranes, pumper cleaner, and refuse vehicles.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
