281GDKVW-D8RF Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GDKVW-D8RF or 281GDKVWD8RF, is a hydraulically shifted (PowerShift) hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar transmissions. It carries 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 while reducing the damaging vibrational effects caused by 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 interference fitting issues, and a Positive Stop feature on driveline outputs eliminates oil seal damage from coupling. The Wet Spline Lubrication option delivers 7 to 10 times greater shaft life. SmartStart reduces shock load at start-up on qualifying applications, and the Electronic Overspeed Control (EOC) protects driven equipment. This is a genuine Chelsea part sold by Pro Gear and Transmission. Call us to confirm proper fit for your transmission and application.

Features

Hydraulic PowerShift (hot-shift) operation for 10-bolt automatic transmissions including Allison
Ductile iron bearing cap, 117% stronger than gray iron, for increased durability
Enhanced clutch pack with steel discs 80% thicker than the predecessor 280 Series
O-ring sealing configuration between housing and bearing cap reduces vibration effects and improves clamp load
Nine speed ratios including low and high speeds; single continuous duty torque rating
Wet Spline Lubrication option provides 7 to 10 times greater shaft life; SmartStart reduces start-up shock load; Electronic Overspeed Control (EOC) protects driven equipment

Tech Specs

• Shift Type: Hydraulic PowerShift (hot-shift)
• Mounting Type: 10-Bolt
• Compatible Transmissions: Allison and Caterpillar automatic transmissions
• Continuous Torque Rating (Series): 390 lb-ft (529 Nm)
• Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
• Speed Ratios: Nine, including low and high
• Lubrication: Pressure Lube and Wet Spline options
• Smart Start: Yes, available for qualifying applications
• Electronic Overspeed Control (EOC): Included
• Part Number: 281GDKVW-D8RF or 281GDKVWD8RF

Additional Information

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