281GGFJP-B3BV Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GGFJP-B3BV or 281GGFJPB3BV, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, commonly used on Allison transmissions. This series delivers a single continuous-duty torque rating and offers nine speed ratios covering both 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 and resists vibration from modern engine designs. The clutch pack features 80% thicker steel discs to resist premature tooth wear. Rotatable cast-iron flanges reduce interference clearance issues, and a positive-stop driveline output eliminates oil-seal damage from coupling. The wet spline lubrication option extends shaft life 7 to 10 times over standard configurations. SmartStart reduces shock load at start-up, and Electronic Overspeed Control (EOC) protects downstream driven equipment. A genuine Chelsea part sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.

Features

Hydraulic hot-shift (PowerShift) design for Allison 10-bolt automatic transmissions
Ductile iron bearing cap rated 117% stronger than gray iron
O-ring sealing configuration between housing and bearing cap improves clamp load and reduces vibrational effects
80% thicker steel discs in the clutch pack 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
SmartStart reduces shock load at start-up for compatible applications
Electronic Overspeed Control (EOC) protects driven equipment
Rotatable cast-iron flanges reduce pump clearance interference
Positive-stop driveline output eliminates oil seal damage from coupling

Tech Specs

• Mounting Type: 10-Bolt aperture
• Shift Type: Hydraulic (PowerShift / hot-shift)
• Continuous Operation: Yes
• Transmission Application: Allison automatic transmissions
• Speed Ratios: Nine ratios including low and high speeds
• Continuous Torque (series rating): 390 lb-ft (529 Nm) - verify against application page for this configuration
• Output Types: SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, driveline
• Lubricant System: Pressure lube or wet spline option
• Clutch Pack: 80% thicker steel discs vs. predecessor 280 Series
• Bearing Cap Material: Ductile iron

Additional Information

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