The Chelsea 280GDFJP-B5RK or 280GDFJPB5RK PTO assembly mounts with a 10-bolt pattern and carries a rotatable SAE B 2 or 4-bolt flange with a 7/8-13T output shaft. The rotatable flange lets the installer turn the pump to clear the transmission and frame, and an enhanced housing design adds clearance when a pump is direct mounted.
It belongs to Chelsea's 280 Series, a PowerShift hydraulic PTO line built for Allison transmissions and rated by the series for up to 390 lb-ft in continuous duty. A cartridge valve assembly reduces interference around the unit, and a wet spline option keeps the pump shaft lubricated to extend shaft life.
A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Chelsea 280 Series PTO assembly, 10-bolt mounting
Rotatable SAE B 2 or 4-bolt pump flange
7/8-13T output shaft
Wet spline option available
Cartridge valve assembly for reduced interference
Enhanced housing design for transmission clearance when direct mounting a pump
Additional Information
Parts manual and diagrams: Chelsea 280 Series PTO parts list with prices
Matched by full model number. Check the mounting, input gear and output against the unit you are replacing before you order. Look up any Chelsea, Muncie or Bezares number on our Muncie to Chelsea PTO cross reference.