Case 1650M - Installation of Tapered Thread Connectors

INTRODUCTION
Installationoftaperedthreadconnectors
1.Removeprotectiveconnectorcapsonlyimmediately
priortoassembly.
NOTICE:Pre-appliedsealants,suchasLOCTITE®
503™VIBRA-SEAL®and/orpowderedPTFEarethe
preferredsealantsfortaperedthreadconnectors.
Non-preferredsealanttypesincludePTFEtape,paste
sealants,andanaerobicliquids.PTFEtapeand
pastesealantsmaycontributetohydraulicsystem
contamination.
2.Inspectthecomponentstoensurethatthemaleand
femaleportthreadsandsealingsurfacesarefreeof
burrs,nicks,andscratches,oranyforeignmaterial.
Donotuseifimpuritiesarefound.
3.Applythesealant/lubricanttothemalepipethreads,
ifnotpre-applied.Therstoneortwothreadsshould
nothavesealantappliedtothemtoavoidsystemcon-
tamination.
NOTICE:Ifyourequireaspecicorientationofa
shapedconnector,takeintoconsiderationthatnal
positionbeforeyouproceedwiththenextsteps.
Neverbackoff(loosen)taperedthreadconnectorsto
achievealignmentyouwillincreasethepossibilityof
leaks.
4.Screwtheconnectorintotheporttothengertight
position.
5.Useawrenchtotightentheconnector.Seethetorque
tableforthepropernumberofTurnsFromFingerTight
(TFFT).
NOTE:Normally,thetotalnumberofthreadsengaged
shouldbebetween3.5and6.Ifmorethan6threads
areengaged,thismayindicatedanover-tightened
connection.Iffewerthan3.5threadsareengaged,
thismayindicateanunder-tightenedconnection.For
anover-tightenedconnection,checkboththreadsand
replacethepartwhichhasout-of-tolerancethreads.If
theconnectionisunder-tightened,itisacceptableto
tightenitfurther,butnomorethanonefullturn.
RAIL15TLB0539AA3
4804856726/04/2017
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