The Chelsea 281 Series Power Take-Off, part number 281GMFJP-B8XV or 281GMFJPB8XV, is a hydraulically shifted hot-shift PTO designed for automatic transmissions with a 10-bolt aperture, commonly found on Allison transmissions. An evolution of the 280 Series, the 281 Series addresses vibrational stress from modern engine designs through a ductile iron bearing cap rated 117% stronger than gray iron and an improved o-ring sealing configuration between the housing and bearing cap. The clutch pack features steel discs 80% thicker than the predecessor design to resist premature tooth wear. Nine speed ratios cover both low and high ranges, and an optional Wet Spline lubrication configuration extends shaft life by 7 to 10 times. Cross-references include 280GMFJP-B8XV and 280GMFJPB8XV. Call us to confirm proper fit for your application.
Features
Ductile iron bearing cap, 117% stronger than gray iron, to handle vibrational stress from modern engine designs
Improved o-ring sealing configuration between housing and bearing cap for better clamp load
Enhanced clutch pack with steel discs 80% thicker than the predecessor 280 Series design
Nine speed ratios including both low and high speeds
Wet Spline lubrication option extends shaft life 7 to 10 times compared to standard configuration
SmartStart reduces shock load at engagement; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot-Shift)
- Compatible Transmissions: Allison automatic transmissions (10-bolt aperture)
- Continuous Operation: Yes
- Series Continuous Torque Rating: 390 lb-ft (529 Nm) - verify actual rating on application pages
- Speed Ratios: Nine ratios including low and high
- Lubrication Options: Pressure Lube (P) or Wet Spline (W)
- Cross References: 280GMFJP-B8XV, 280GMFJPB8XV, 280GMFJP B8XV, CHL280GMFJPB8XV
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
