Description
The Chelsea 281GCFJP-D3RS or 281GCFJPD3RS is a 281 Series Power Take-Off Assembly designed for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar transmissions. It uses hydraulic (PowerShift) engagement for hot-shift operation and covers nine speed ratios spanning both low and high ranges. The bearing cap is ductile iron, rated 117% stronger than gray iron, and the clutch pack features steel discs 80% thicker than the previous 280 Series design. An o-ring sealing configuration between the housing and bearing cap reduces vibrational effects and improves clamp load. Rotatable cast-iron flanges cut interference issues at pump mounting, and a positive stop on driveline outputs prevents oil seal damage from coupling. Call us to confirm proper fit for your transmission and application.
Features
10-bolt mounting for Allison and Caterpillar automatic transmissions
Hydraulic PowerShift (hot-shift) engagement for continuous-duty operation
Ductile iron bearing cap, 117% stronger than gray iron predecessor
Enhanced clutch pack with steel discs 80% thicker than 280 Series
Nine speed ratios covering low and high ranges
Wet Spline Lubrication option extends shaft life 7 to 10 times
Electronic Overspeed Control (EOC) protects driven equipment
SmartStart reduces shock load at engagement for compatible applications
Tech Specs
- Mounting: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Compatible Transmissions: Allison automatic transmissions (10-bolt aperture)
- Continuous Operation: Yes
- Series Continuous Torque: 390 lb-ft (529 Nm) – verify actual rating on application page
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Available Output Shaft Types: 1-1/4″ round with 5/16″ key (SmartStart), 3/4″-11T pump spline, SAE B 7/8″-13T pump spline, SAE C 1-1/4″-14T pump spline, DIN 5462 pump spline, 1410 companion flange, DIN 120 flange, DIN 100 flange
- Lubricant Options: Pressure Lube, Wet Spline
- Speed Ratios: Nine (low and high range)
- Part Number: 281GCFJP-D3RS or 281GCFJPD3RS
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
