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4300Catalog Assembly/Installation FerulokAssembly FerulokTroubleshootingGuide Problemswithbitetypehydraulicfittingsaremostoftentraced Caution:Pre-settools tofaultyPre-Set/Assemblyprocedure. suchastheFerulsetand Hyfersetarepreferredfor Problem/ pre-settingferrulesprior tofinalassembly.How- ProbableCause Remedy ever,whenanactualfitting Tubenot Checkfortheindentationonthetube bodyisusedtopre-setthe bottomed endorcomparethelengthfromtheend ferrule,thatbodyshould ofthetubetothefrontendoftheferrule beconnectedonlytothe ofaknowngoodassemblytothatofthe specificferruleitwasused assemblyinquestion.Thisassembly topre-set. Fig.T35�Tubenotbottomed shouldbescrapped.(Fig.T35) Shallowbite Inspectforturnedupridgeofmaterial. Afailuretoachievethisridgecan betracedeithertothenutnotbeing tightenedenoughorthetubenotbeing bottomedagainstthestopwhichal- lowedthetubetotravelforwardwiththe ferrule.Insomeinstancesthisassembly maybere-worked.(Fig.T36) Over-setferrule Toomuchpressureormorethan13/4 turnsfromfingertightwereusedto pre-setferrule,orthenutwasseverely over-tightenedinfinalassembly.This assemblyshouldbescrapped. Fig.T36�Shallowbite Fig.T37�Over-setferrule (Fig.T37) Ferrulecocked Theferrulemaybecomecockedon ontube thetubewhenthetubeendisnot properlylinedupwiththebody.Gener- ally,thisconditioniscausedbyfaulty tubebending.Allbenttubeassemblies shoulddropintothefittingbodyprior tomakeup.Thisassemblyshouldbe scrapped.(Fig.T38) Nobite Ifallofthepriorcheckshavebeen madeandtheferrulestillshowsnosign ofbitingthetube,itmaybethatthe tubeistoohard.Thisassemblyshould Fig.T38�Ferrulecockedon Fig.T39�Nobite bescrapped.(Fig.T39) tube TableT23�Ferulokfittingtroubleshootingguide Dimensionsandpressuresforreferenceonly,subjecttochange. T25 ParkerHannifinCorporation TubeFittingsDivision Columbus,Ohio http://www.parker.com/tfd
Goodyear Rubber Products
