Farr KT5500 - Page 67

KT5500 5-
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/
2
” Tong & CLInCHER® BaCKup
SECTIon ConTEnTS
3.29
TECHnICaL ManuaL
MaInTEnanCE
DepressurizAtion proceDure for storAge:
1) Rotatethetongtothe“openthroat”position.
2) Exerciseeachhydrauliccylinderseveraltimes-openthetongandbackupdoors(ifequipped),retractandextendthe
remotebackingpinramp(ifequipped),retractandextendthefloatcylinders.Leaveallcylindersexceptforthedoor
cylindersintheirfullyretractedposition.Thegeneralideaistohaveaslittleofthechromecylinderrodsexposedas
possible.
3) De-energizethepowerunit.
4) RepeatedlyactuatethetongmotorcontrolvalveleverINBOTHDIRECTIONStodissipateanyresidualpressureinthe
valveandmotor.
5) RemovethehydraulicSUPPLYlinefromtheequipment.
6) RepeatedlyactuatetheremainingcontrolvalveleversINBOTHDIRECTIONStodissipateanyresidualpressureinthe
remainderofthehydrauliccontrolsystem.
7) Connectalow-pressureairsupplyline(10PSIorless)tothehydraulicsupplyline,andforceasmallamountofthe
remaining hydraulic fluidfrom the valve assembly -this willallow for thermalexpansion ofthehydraulic fluid if the
equipmentisstoredortransportedinhighambienttemperatures.Failuretodothismayresultindamagedordestroyed
sealsintheequipment.
8) DisconnectthehydraulicRETURNlinefromtheequipment.
9) Disconnectremaininghosessuchascasedrains,orlinesconnectedtotheturnscounter.
13.
Energizepowerunit.Rotatetongforoneminute,stop,andreversethedirectionofrotationforanotherminute,endingwith
theopeningoftherotarygearfacingthegeartrain.
14.
De-energizethepowerunit,andperformathirdgenerouslubricationofthegeartrain,includingthegearhousing.
15.
Energizepowerunit,androtatethetongforafinaltime,oneminuteinonedirection,stop,andreversethedirectionof
rotationforanotherminute,thistimeendingwiththerotarygearinthe“openthroat”position.
16.
Extendallhydrauliccylinders,andinspectcylinderrodsforsignsofmechanicaldamage,flaking,orrust.Farrrecom-
mendsthatdamagedcylindersbereplacedpriortostorage.
17.
Ifyouareusingaframe-mountedtool,thetongmustbeloweredontothebackupinordertoremovetheriskofsudden
andcatastrophicmovementwhenpressureisremovedfromthefloatcylinders.Coverthetopofthebackupwithprotec-
tiveclothtoprotectthepaintonthebackup.Placetwowoodenbeamsacrossthetopofthetong,ensuringthatthebeams
haveaminimumsizeof4”x4”xthewidthofthetong.Coverthetopsofthewoodenbeamswithmoreprotectiveclothto
preventpaintdamagetothetong.Whenloweringthetongontothebeams,ensurethatthebeamscomeintoflatcontact
withthebottomofthetong,awayfrombearingcaps,brakebands,orotherprotrusionsonthebottomofthetong.Ensure
thatthetonghangerchainsareloose,butnotdanglingintocontactwiththehangersortopplateofthetong.
23.
Allowtheanti-corrosivecoatingampletimetodry-refertomanufacturerdatasheetsfordryingtimesatroomtempera-
ture.
24.
Wrapentireassemblyin100gauge(1mil)corrosion-inhibitingwrap,atleast3layersthick.Attempttoensurethatthetool
iswell-sealedwithinthewrapping,includingthebottom.
18.
Ifanyhydraulicfittingsorhosesareleakingtheymustberepairedorreplacedbeforeproceeding.
19.
Wipeall excess greasefrom outside of equipment. Replacethe access door panel. Usea solvent-based cleaneron
ragstowipeallexternalsurfacestoremoveresidualgreaseorhydraulicfluid.Oncetheoutsidesurfaceshavebeende-
greased,wipeallexternalsurfaceswithcleanwatertoremoveresidualsolvent.
20.
Farrrecommendsthatchainslingsberemovedandstoredseparately.Rigidslingsandotherrigidsuspensiondevices
mayremaininplace.
21.
Applygreaseorheavyoiltoallexposedcylinderrods.
22.
Farrrecommendsthatananti-corrosiveagentsuchasTectyl
®
506beappliedtoallexternalsurfacesEXCEPTcylinder
rods(includingchainslings).Refertomanufacturerdatasheetsforproperapplicationandsafetyinformation.
DO NOT ALLOW ANTI-CORROSIVE AGENTS TO CONTACT CYLINDER RODS. CYLINDER ROD
DAMAGE WILL OCCUR.