281GGFJW-G8RF Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GGFJW-G8RF or 281GGFJWG8RF, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison transmissions. It carries a continuous torque rating of 390 lb-ft and delivers nine speed ratios spanning low and high ranges. The ductile iron bearing cap is 117% stronger than gray iron, and an o-ring sealing configuration between the housing and bearing cap improves clamp load while reducing the vibrational effects of modern engine designs. The clutch pack features steel discs that are 80% thicker than the previous 280 Series to resist premature tooth wear. Rotatable cast-iron flanges reduce interference fit issues, and the Wet Spline Lubrication option extends shaft life by 7 to 10 times. Electronic Overspeed Control (EOC) protects driven equipment. Call us to confirm proper fit for your transmission and application.

Features

Hydraulic (PowerShift) hot-shift operation, 10-bolt mounting aperture for Allison automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron for greater durability
O-ring sealing configuration between housing and bearing cap to improve clamp load and reduce vibrational effects
Enhanced clutch pack with steel discs 80% thicker than the 280 Series predecessor
Nine speed ratios including low and high speeds; continuous duty torque rating of 390 lb-ft
Wet Spline Lubrication option for 7 to 10 times greater shaft life; SmartStart reduces shock load at start-up; Electronic Overspeed Control (EOC) protects driven equipment

Tech Specs

• Shift Type: Hydraulic (PowerShift) hot-shift
• Mounting: 10-bolt aperture
• Compatible Transmissions: Allison automatic
• Continuous Torque: 390 lb-ft
• Speed Ratios: Nine (includes low and high)
• Output Types: SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, driveline
• Lubrication: Pressure lube or Wet Spline option
• Series: Chelsea 281 Series (evolution of the 280 Series)

Additional Information

Parts manual and diagrams: Chelsea 281 Series PTO parts list with prices