The Chelsea 281GCFJP-K5RK or 281GCFJPK5RK is a hydraulically shifted PowerShift PTO assembly from Chelsea's 281 Series, designed for 10-bolt automatic transmissions including Allison applications. The 281 Series is an evolution of the 280 Series, featuring 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 an 80% thicker clutch pack steel disc for reduced tooth wear. Nine speed ratios span low and high ranges. A wet spline lubrication option extends shaft life by 7 to 10 times. Cross-referenced as 5P1491 and 5P1495. Call us to confirm proper fit for your transmission and application.
Features
10-bolt mounting for Allison and compatible automatic transmissions
Hydraulic PowerShift (hot shift) operation for on-the-go engagement
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap improves clamp load
80% thicker steel discs in the clutch pack 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; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic / Hot Shift)
- Continuous Operation: Yes
- Transmission Application: Allison (10-bolt aperture)
- Speed Ratios: Nine ratios, including low and high speeds
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication: Pressure Lube (P) or Wet Spline (W) option
- Cross Reference: 5P1491, 5P1495
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
