281GCFJW-D3RS Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GCFJW-D3RS or 281GCFJWD3RS, is a hydraulically shifted hot-shift PTO designed for automatic transmissions with a 10-bolt aperture, including Allison transmissions. It carries a single, continuous duty torque rating and offers nine speed ratios covering both low and high speeds. The 281 Series builds on the proven 280 Series platform with a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between the housing and bearing cap for improved clamp load, and 80% thicker steel discs in the clutch pack to resist premature tooth wear. Rotatable cast-iron flanges reduce interference clearance issues, and a Wet Spline Lubrication option delivers 7 to 10 times greater shaft life. Applications span fire and rescue, truck cranes, pumper cleaner, and refuse trucks. Call us to confirm proper fit for your specific transmission and application.

Features

Ductile Iron Bearing Cap - 117% stronger than gray iron compared to the predecessor 280 Series
O-ring sealing configuration between housing and bearing cap to reduce vibrational effects and improve clamp load
Enhanced Clutch Pack - steel discs are 80% thicker to resist premature tooth wear
Nine speed ratios including low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) and SmartStart reduce shock load and protect driven equipment
Rotatable cast-iron flanges minimize pump clearance interference; Positive Stop for driveline outputs eliminates oil seal damage from coupling

Tech Specs

• Mounting Type: 10-Bolt
• Shift Type: PowerShift (Hydraulic)
• Transmission Application: Allison automatic transmissions
• Continuous Torque: 390 lb-ft (529 Nm) - verify actual rating on application page
• Output Types Available: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
• Output Shaft Options: SmartStart Round Shaft (1-1/4 in. with 5/16 in. key), 3/4 in. 11-tooth pump spline, SAE B 7/8 in. 13-tooth pump spline, SAE C 1-1/4 in. 14-tooth pump spline, DIN 5462 pump spline, 1410 companion flange, DIN 120 flange, DIN 100 flange
• Shaft Power: 37 HP at 500 RPM, 74 HP at 1000 RPM
• Continuous Operation: Yes
• Lubrication Options: Pressure Lube, Wet Spline
• Markets: Fire and Rescue, Truck Cranes, Pumper Cleaner, Refuse
• Series: Chelsea 281 (evolution of 280 Series)

Additional Information

Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.