871XAFJP-B3SV Chelsea PTO Assembly

The Chelsea 871 Series Power Take-Off, part number 871XAFJP-B3SV or 871XAFJPB3SV, is a 10-bolt hydraulic PowerShift 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 cover a wide range of vocational installations, including fire and rescue apparatus, truck cranes, pumper cleaners, and refuse vehicles. 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 demands of modern engine designs. The compact housing profile reduces clearance conflicts during installation. Call us to confirm proper fit for your specific transmission and application.

Features

10-bolt mounting, hydraulic PowerShift actuation for Allison transmission applications
Ductile iron bearing cap, 117% stronger than gray iron, for increased durability under high-vibration engine loads
O-ring sealing configuration between housing and bearing cap improves clamp load and resists vibrational effects
Continuous torque capacity up to 670 lb-ft (908 N-m); no derating required for continuous duty
Nine speed ratios and thirteen output options to suit varied vocational equipment requirements
Optional Wet Spline pump flange, SmartStart (shock-load reduction), Quiet Gear input, and Electronic Overspeed Control (EOC) available

Tech Specs

• Mounting Type: 10-Bolt
• Shift Type: PowerShift (Hydraulic)
• Transmission Manufacturer: Allison
• Continuous Torque: 670 lb-ft (908 N-m)
• Shaft Power: 64 HP at 500 RPM / 128 HP at 1,000 RPM
• Speed Ratios: Nine
• Output Options: Thirteen
• Lubricant: Pressure Lube (P) with Wet Spline (W) option
• Continuous Operation: Yes
• Available Options: Wet Spline pump flange, SmartStart, Quiet Gear input, Electronic Overspeed Control (EOC)

Additional Information

Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.