The Chelsea 281GCFJV-D3RY or 281GCFJVD3RY is a 281 Series hydraulically shifted hot shift power take-off designed for automatic transmissions with a 10-bolt aperture, commonly found on Allison transmissions. This series supports continuous operation and offers nine speed ratios covering both low and high ranges. 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 to resist premature tooth wear. Output options include SAE B and SAE C pump flanges, ISO 7652 flanges, and driveline outputs. A genuine Chelsea part available from Pro Gear and Transmission. Call us to confirm proper fit for your specific transmission and application.
The Chelsea 281 Series PTO is an evolution of the 280 Series, incorporating structural and sealing improvements to address the demands of modern engine designs. The series carries Parker documents including the 281/288 Series Parts List (HY25-2281-M1/US) and the 267/281/288/871/878 Series Owner's Manual. Typical markets served include fire and rescue apparatus, refuse trucks, pumper cleaners, and truck cranes. The SmartStart output shaft option reduces start-up shock loads in select applications, and the Electronic Overspeed Control (EOC) option protects downstream driven equipment. Call us to confirm which output shaft configuration and speed ratio is correct for your transmission and pump.
Features
Ductile iron bearing cap, 117% stronger than gray iron, for increased durability over the predecessor 280 Series
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
80% thicker steel discs in the clutch pack to resist premature tooth wear
Nine speed ratios available, including low and high speeds
Rotatable cast iron flanges reduce interference issues and improve pump clearance
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart option reduces shock load at start-up
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic (PowerShift / Hot Shift)
- Transmission Application: Allison automatic transmissions (10-bolt aperture)
- Continuous Torque Rating: 390 lb-ft (529 Nm) - check application pages for actual torque rating
- Intermittent Torque Range: 301 to 400 lb-ft (501+ Nm)
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 37 HP at 500 RPM; 74 HP at 1000 RPM (28 kW at 500 RPM; 55 kW at 1000 RPM)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Options include: Smart Start 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, DIN 5462 pump spline, 1410 companion flange, DIN 120 flange, DIN 100 flange
- Lubrication: Pressure Lube or Wet Spline option (Wet Spline provides 7 to 10 times greater shaft life)
- Continuous Operation: Yes
- Speed Ratios: Nine, including low and high speeds
- Markets: Fire and Rescue, Truck Cranes, Pumper Cleaner, Refuse
Additional Information
The Chelsea 281 Series PTO is an evolution of the 280 Series, incorporating structural and sealing improvements to address the demands of modern engine designs. The series carries Parker documents including the 281/288 Series Parts List (HY25-2281-M1/US) and the 267/281/288/871/878 Series Owner's Manual. Typical markets served include fire and rescue apparatus, refuse trucks, pumper cleaners, and truck cranes. The SmartStart output shaft option reduces start-up shock loads in select applications, and the Electronic Overspeed Control (EOC) option protects downstream driven equipment. Call us to confirm which output shaft configuration and speed ratio is correct for your transmission and pump.
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
