281GDFJP-B3BV Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GDFJP-B3BV or 281GDFJPB3BV, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, commonly fitted to Allison transmissions. The 281 Series carries a continuous torque rating of 390 lb-ft and delivers nine speed ratios covering both low and high ranges. It builds directly on the 280 Series platform with several targeted upgrades: a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between the housing and bearing cap to improve clamp load, and an 80% thicker clutch-pack steel disk stack to resist premature tooth wear. Rotatable cast-iron flanges reduce interference clearance issues, and a Positive Stop for driveline outputs eliminates oil seal damage from coupling. Electronic Overspeed Control (EOC) and the optional SmartStart feature are available to protect driven equipment and reduce start-up shock loads. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.

Features

Hydraulic (PowerShift) hot-shift operation for use on Allison automatic transmissions with a 10-bolt aperture
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap improves clamp load and reduces vibrational effects
Enhanced clutch pack with 80% thicker steel disks to resist premature tooth wear
Nine speed ratios including low and high ranges; 390 lb-ft continuous torque rating
Electronic Overspeed Control (EOC) and SmartStart available to protect driven equipment and reduce start-up shock load

Tech Specs

• Mounting Type: 10-Bolt
• Shift Type: Hydraulic (PowerShift) Hot-Shift
• Transmission Application: Allison automatic transmissions
• Continuous Torque Rating: 390 lb-ft (529 Nm)
• Speed Ratios: Nine, including low and high speeds
• Continuous Operation: Yes
• Lubricant Options: Pressure Lube or Wet Spline (Wet Spline provides 7-10x greater shaft life)
• Output Types Available: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
• Electronic Overspeed Control (EOC): Yes
• SmartStart: Available for applicable configurations

Additional Information

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