The Chelsea 281 Series Power Take-Off, part number 281GGFJP-B3RF or 281GGFJPB3RF, is a hydraulically shifted hot-shift PTO designed for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar transmissions. The 281 Series is an evolution of the 280 Series, with several structural upgrades: a ductile iron bearing cap rated 117% stronger than gray iron, an o-ring sealing configuration between housing and bearing cap to improve clamp load, and steel clutch pack discs increased 80% in thickness to resist premature tooth wear. Nine speed ratios span low through high ranges. The series continuous torque rating is 390 lb-ft (529 Nm). Cross-references include 280GGFJP-B3RF and 3252PGE631SB. Call us to confirm proper fit for your transmission and application.
Features
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap improves clamp load and reduces vibrational effects
Enhanced clutch pack with steel discs 80% thicker to resist premature tooth wear
Nine speed ratios including dedicated low and high speed ranges
Wet Spline Lubrication option extends shaft service life 7 to 10 times over standard lubrication
Electronic Overspeed Control (EOC) and SmartStart option reduces shock load at start-up
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Application: Allison, Caterpillar (10-bolt aperture)
- Continuous Torque: 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)
- Lubricant Options: Pressure Lube (P), Wet Spline (W)
- Cross Reference: 280GGFJP-B3RF, 280GGFJPB3RF, 3252PGE631SB
- Series: Chelsea 281
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
