281GCKVP-B5RK Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GCKVP-B5RK or 281GCKVPB5RK, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar applications. This 281 Series unit is an evolution of the 280 Series, incorporating 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 to resist premature tooth wear. Nine speed ratios cover both low and high ranges. The wet spline lubrication option delivers 7 to 10 times greater shaft life, and the SmartStart feature reduces shock load at start-up. Electronic Overspeed Control (EOC) is included to protect driven equipment. Cross-referenced as 5P1493 and 5P1495. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your application.

Features

Hydraulic PowerShift (hot-shift) operation for Allison and Caterpillar 10-bolt automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap for improved clamp load and reduced vibrational effects
80% thicker steel clutch pack discs to resist premature tooth wear
Nine speed ratios available, including low and high speeds
Wet spline lubrication option provides 7 to 10 times greater shaft life
SmartStart reduces shock load at start-up; Electronic Overspeed Control (EOC) protects driven equipment
Rotatable cast-iron flanges reduce pump clearance interference issues
Positive stop for driveline outputs eliminates oil seal damage from coupling

Tech Specs

• Mounting Type: 10-Bolt
• Shift Type: Hydraulic PowerShift (Hot-Shift)
• Compatible Transmissions: Allison and Caterpillar automatic transmissions (10-bolt aperture)
• Continuous Operation: Yes
• Speed Ratios: Nine (including low and high speeds)
• Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
• Lubricant Options: Pressure Lube (P), Wet Spline (W)
• Cross-References: 5P1493, 5P1495
• Series: Chelsea 281 Series (evolution of 280 Series)

Additional Information

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