Because of the large physical size of the pumps used on maintenance truck applications, clearance has always been a challenge. Chelsea’s new 892 Series was designed with this in mind to provide users with maximum clearance for the 4700 Series transmissions. The 892 features six speed ratios, eight output types and six shift options. Torsional vibrations from today’s diesel engines can prematurely wear out mating PTO and pump splines. According to the company, the wet spline System lubricates the mating PTO and pump shafts will increase the life of these components 7 to 10 times longer than a dry mating connection.