As seen, the nozzles 88 in FIG 3 are positioned to direct {HEAD ~ pressurized fluid} against the inner wall of {TAIL ~ the box} 31 of member 22 since the threads are interior, rather than exterior as on the pin end 26 
As seen , the nozzles 88 in FIG 3 are positioned to direct { HEAD ~ pressurized fluid } against the inner wall of { TAIL ~ the box } 31 of member 22 since the threads are interior , rather than exterior as on the pin end 26
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