The Chelsea 280 Series Power Take-Off, or P.T.O., combines the 277 and 278 Series into one model of P.T.O. It features a single, continuous-duty torque rating. Pump clearance issues have been improved with rotatable, cast iron flanges and the wet spline pump flange option provides seven to 10 times greater shaft life, according to the company. Broader coverage of speed ranges expands from five to nine ratios and includes lower and higher speeds that were not available in the past. There are three position options for the integrated solenoid valve, and a remote, mounted option provides maximum clearance under the truck. The standard output shaft features a positive stop for driveline outputs that eliminates the ability for shaft couplings to damage oil seals. This unit is designed for the 10-Bolt P.T.O. pattern on Allison and CAT Automatic transmissions. The pressure/lube hose is included.
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