The Chelsea 871 Series Power Take-Off, part number 871LAFJW-B3TF or 871LAFJWB3TF, is a 10-bolt hydraulic PowerShift PTO designed for Allison transmission applications. The 871 Series replaces the Chelsea 870 Series PTO, bringing a ductile iron bearing cap rated 117% stronger than gray iron and an O-ring sealing configuration between the housing and bearing cap to maintain clamp load and reduce vibration-related wear from modern engine designs. Continuous torque capacity reaches 670 lb-ft (908 N-m), rated for continuous-duty operation without derating. Nine speed ratios and thirteen output configurations cover a wide range of hydraulic applications, from refuse and pumper-cleaner trucks to fire and rescue and crane service. This is the only Chelsea PTO to offer all three of the brand's premium options together: Wet Spline, SmartStart, and Quiet Gear. Call us to confirm proper fit for your transmission and application.
The 871 Series is suited for demanding vocational applications including fire and rescue, truck cranes, pumper-cleaner trucks, and refuse vehicles. Its compact housing reduces clearance concerns during installation, and multiple assembly arrangements expand mounting flexibility. The SmartStart option reduces shock load at start-up for torque-sensitive driven equipment, while Electronic Overspeed Control (EOC) safeguards pumps and other driven components. The Wet Spline pump flange circulates lubricant across the spline interface to extend both PTO and pump shaft service life. Applicable Parker Chelsea documentation includes 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, designed for Allison transmissions
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
Continuous torque capacity up to 670 lb-ft (908 N-m), no derating required for continuous-duty use
Nine speed ratios and thirteen output options for broad application coverage
Wet Spline pump flange, SmartStart, and Quiet Gear options all available on this series
Electronic Overspeed Control (EOC) protects driven equipment from overspeed damage
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 1000 RPM
- Output Power: 56+ HP
- 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 and Wet Spline
- Continuous Operation: Yes
- Series: Chelsea 871 Series (replaces 870 Series)
Additional Information
The 871 Series is suited for demanding vocational applications including fire and rescue, truck cranes, pumper-cleaner trucks, and refuse vehicles. Its compact housing reduces clearance concerns during installation, and multiple assembly arrangements expand mounting flexibility. The SmartStart option reduces shock load at start-up for torque-sensitive driven equipment, while Electronic Overspeed Control (EOC) safeguards pumps and other driven components. The Wet Spline pump flange circulates lubricant across the spline interface to extend both PTO and pump shaft service life. Applicable Parker Chelsea documentation includes 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.
