281GKFJW-N5RY Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GKFJW-N5RY or 281GKFJWN5RY, is a hydraulically shifted (PowerShift) hot-shift PTO designed for automatic transmissions with a 10-bolt aperture, including Allison transmissions. The 281 Series builds on the 280 Series platform with a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between the housing and bearing cap for improved clamp load, and 80% thicker steel discs in the clutch pack to resist premature tooth wear. Nine speed ratios cover both low- and high-speed applications. The series carries a continuous torque rating of 390 lb-ft (529 Nm). Call us to confirm proper fit for your application.

Features

Hydraulic PowerShift (hot-shift) operation for Allison 10-bolt automatic transmission aperture
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap for improved clamp load
Enhanced clutch pack with 80% thicker steel discs to resist premature tooth wear
Nine speed ratios including dedicated low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Positive Stop for driveline outputs eliminates oil seal damage from coupling
SmartStart feature reduces shock load at start-up; Electronic Overspeed Control (EOC) protects driven equipment

Tech Specs

• Mounting Type: 10-Bolt
• Shift Type: PowerShift (Hydraulic), hot-shift
• Continuous Torque: 390 lb-ft (529 Nm)
• Transmission Compatibility: Allison (and Caterpillar) automatic transmissions
• Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
• Speed Ratios: Nine, including low and high speeds
• Lubrication: Pressure Lube (P) and Wet Spline (W) options
• Continuous Operation: Yes
• Hose: Included

Additional Information

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