The Chelsea 871LAQTW-B5TY is a 10-bolt PowerShift (hydraulic) Power Take-Off from the Chelsea 871 Series, designed for Allison transmissions. The 871 Series features a ductile iron bearing cap rated 117% stronger than the gray iron cap used in the preceding 870 Series, plus an o-ring sealing configuration between the housing and bearing cap to improve clamp load and reduce vibration effects. Continuous torque capacity reaches 670 lb-ft (908 Nm), and the series supports continuous-duty operation without derating. Nine speed ratios and thirteen output options make this PTO adaptable across a wide range of hydraulic applications including fire and rescue, truck cranes, pumper cleaners, and refuse equipment. Available output types include SAE B and SAE C pump flanges. Wet Spline, SmartStart, and Quiet Gear options are unique to the 871 Series among Chelsea's PTO lineup. A genuine Chelsea part from Pro Gear and Transmission.
Relevant Parker Chelsea documentation: 267/281/288/871/878 Series Owner's Manual; 871 Series Parts List (HY25-2871-M1/US); Chelsea PTO Stud Kits (HY25-2002-M1_US).
Features
10-bolt mounting, hydraulic PowerShift (pressure lube, wet spline)
Designed for Allison transmission applications
Continuous torque capacity: 670 lb-ft (908 Nm), no derating required for continuous duty
Ductile iron bearing cap, 117% stronger than the gray iron predecessor
O-ring sealing between housing and bearing cap improves clamp load and reduces vibration
Nine speed ratios and thirteen output shaft options, including SAE B and SAE C pump flanges
Tech Specs
- Series: Chelsea 871 Series
- Shift Type: PowerShift (Hydraulic)
- Mounting: 10-Bolt
- Transmission Compatibility: Allison
- Continuous Torque: 670 lb-ft (908 Nm)
- Output Types: SAE B Pump Flange, SAE C Pump Flange
- Output Shaft Options: SAE B (7/8"-13T), SAE BB (1"-15T), SAE C (1-1/4"-14T), DIN 5462 Pump Spline, 1410 Series Companion Flange, DIN 120 Flange, DIN 100 Flange
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Speed Ratios: Nine available
- Output Options: Thirteen available
- Continuous Operation: Yes
- Lubricant: Pressure Lube / Wet Spline
- Special Options: Wet Spline, SmartStart, Quiet Gear
Additional Information
The 871 Series replaces the earlier Chelsea 870 Series PTO. Key upgrades over the 870 Series include the ductile iron bearing cap and the o-ring sealing configuration. The 871 Series is the only Chelsea PTO to offer all three of Chelsea's high-demand options in a single platform: Wet Spline, SmartStart, and Quiet Gear. Applicable markets include fire and rescue, truck cranes, pumper cleaner, and refuse vehicles.Relevant Parker Chelsea documentation: 267/281/288/871/878 Series Owner's Manual; 871 Series Parts List (HY25-2871-M1/US); Chelsea PTO Stud Kits (HY25-2002-M1_US).
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
