CHELSEA PTO
Parker Chelsea says PTO and pump installation is simpler and more reliable on oil field exploration and maintenance trucks with the new 891 Series. Because of the large physical size of the pumps used on these applications clearance has always been a challenge, but the 891 is said to have been designed with this in mind to provide maximum clearance for the 4000/4500 Series transmissions with the oil-cooler option.
Another challenge, says Chelsea, is torsional vibrations from today’s diesel engines that prematurely wear out mating PTO and pump splines. The company claims its wet-spline system that lubricates the mating PTO and pump shafts will increase the life of these components by 7 to 10 times compared to a dry connection.
The 891 features 6 speed ratios, 7 output types and 6 shift options to provide spec’ing flexibility.
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