281GPFJP-B3XV Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GPFJP-B3XV or 281GPFJPB3XV, is a hydraulically shifted hot-shift PTO designed for automatic transmissions with a 10-bolt aperture, commonly found on Allison transmissions. It mounts via a 10-bolt pattern and delivers nine speed ratios spanning low and high speeds. 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 damaging vibrational effects of modern engine designs. The clutch pack uses steel discs that are 80% thicker than the previous generation to resist premature tooth wear. Rotatable cast-iron flanges reduce pump clearance interference, and the optional Wet Spline Lubrication provides 7 to 10 times greater shaft life. Electronic Overspeed Control (EOC) and SmartStart are included to protect driven equipment and reduce shock load at engagement. This is a genuine Chelsea part sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.

Features

10-bolt mounting for Allison automatic transmissions
Hydraulic PowerShift (hot-shift) operation for on-the-go engagement
Ductile iron bearing cap rated 117% stronger than gray iron
O-ring seal between housing and bearing cap improves clamp load and reduces vibration effects
80% thicker clutch pack steel discs for extended service life
Nine speed ratios including low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) protects driven equipment
SmartStart reduces shock load at start-up
Rotatable cast-iron flanges minimize pump clearance interference
Positive stop for driveline outputs eliminates oil seal damage from coupling

Tech Specs

• Mounting: 10-Bolt
• Shift Type: Hydraulic PowerShift (hot-shift)
• Compatible Transmissions: Allison automatic transmissions
• Speed Ratios: Nine (includes low and high speeds)
• Continuous Operation: Yes
• Output Types: SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, driveline
• Lubrication Options: Pressure lube (P), Wet Spline (W)
• Electronic Overspeed Control (EOC): Included
• SmartStart: Available for applicable configurations
• Applicable Markets: Fire and rescue, truck cranes, pumper cleaner, refuse

Additional Information

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