The Chelsea 281 Series Power Take-Off, part number 281GTFJP-D3XV or 281GTFJPD3XV, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar transmissions. The 281 Series evolved directly from the proven 280 Series platform with targeted structural upgrades: 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 clutch pack steel discs increased 80% in thickness to resist premature tooth wear. Nine speed ratios spanning low and high speeds, rotatable cast-iron flanges to reduce interference fitment issues, and an optional wet spline lubrication path that delivers 7 to 10 times greater shaft life round out the design. SmartStart technology reduces shock load at engagement, and Electronic Overspeed Control (EOC) guards downstream driven equipment. The series carries a 390 lb-ft continuous torque rating. Output options include SAE B and SAE C pump flanges, ISO 7652 pump flange, and driveline configurations. A hose is included with the assembly. Call us to confirm proper fit and output configuration for your application.
Features
Ductile Iron Bearing Cap - 117% stronger than gray iron for greater durability under vibration
O-Ring Sealing Configuration - improves clamp load between housing and bearing cap, reducing vibrational effects
Enhanced Clutch Pack - steel discs increased 80% in thickness to resist premature tooth wear
Nine Speed Ratios - covers both low and high speed output requirements
Wet Spline Lubrication Option - provides 7 to 10 times greater output shaft life
SmartStart and Electronic Overspeed Control (EOC) - reduces start-up shock load and protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic) - Hot Shift
- Compatible Transmissions: Allison and Caterpillar automatic transmissions
- Continuous Torque Rating: 390 lb-ft (529 Nm)
- Speed Ratios: Nine (including low and high)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Options: SmartStart Round Shaft (1-1/4" with 5/16" key), 3/4" 11-tooth pump spline, SAE B 7/8" 13-tooth pump spline, SAE C 1-1/4" 14-tooth pump spline, 1410 Companion Flange
- Shaft Power: 37 HP at 500 RPM, 74 HP at 1000 RPM
- Lubrication: Pressure lube or Wet Spline option
- Hose: Included
- Part Number: 281GTFJP-D3XV or 281GTFJPD3XV
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
