The Chelsea 871 Series Power Take-Off Assembly, part number 871XEFJW-D5RS or 871XEFJWD5RS, is a 10-bolt PowerShift (hydraulic) PTO designed for Allison transmissions. The 871 Series replaces the popular Chelsea 870 Series with several upgrades, including a ductile iron bearing cap rated 117% stronger than gray iron and an O-ring sealing configuration between the housing and bearing cap to improve clamp load and resist vibration from modern engine designs. The series supports continuous torque 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 wide flexibility. This is the only Chelsea PTO series to combine Wet Spline, SmartStart, and Quiet Gear options in a single compact housing. Call us to confirm proper fit for your application.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Continuous torque capacity up to 670 lb-ft / 908 N-m, no derating required for continuous-duty use
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap reduces vibrational 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) all available on this series
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)
- Shaft Power: 64 HP at 500 RPM / 128 HP at 1,000 RPM
- 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 Flange Types: SAE B Pump Flange, SAE C Pump Flange
- Lubrication: Pressure Lube with Wet Spline
- Continuous Operation: Yes
- Series: Chelsea 871 (replaces Chelsea 870 Series)
Additional Information
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
