Farr KT5500 - Daily Inspection & Maintenance Checklist (Power Tong)

KT5500 5-
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” Tong & CLInCHER® BaCKup
SECTIon ConTEnTS
3.21
TECHnICaL ManuaL
I. DAILY INSPECTION & MAINTENANCE CHECKLIST (POWER TONG)
Farrrecommendsthatthefollowinginspectionandmaintenanceproceduresbeperformedbeforeeachuse,andatleastonceper
daywhenthetongisinsteadyuse,intheorderinwhichtheyarelisted.
1.
Rotatecageplate/rotarygearuntiltheopeningintherotarygearfacestowardstherearofthetong.
3.
Performaninitialwashofthetonginordertoremovethemajorityofdirtandgreasebuild-up.Ensureadequatecontain-
mentisinplacetopreventenvironmentalcontaminationfromresidualhydraulicfluidanddirtygrease.
4.
Removetheaccesspanelonthesideofthetongdirectlyadjacenttotheshiftermechanism.
5.
Useaflashlighttoperformavisualinspectionofthegeartrainthroughtheaccesspanelandtheopeningoftherotary
gear.Ifgeardamageorchipsofmetalareseen,thetongshouldberemovedfromserviceandoverhauledtoavoidfurther
damage.Replaceaccesspanelwheninspectioniscomplete.
6.
Performavisualinspectionofallfastenersandprotrudingbodypieces(example:hydraulicvalvemounts,inlet&outlet
linesupports,tonglegs,shifterhandlepivotlugs).Tightenorreplacelooseormissingfasteners.Farrrecommendsthat
damagedormissingbodypartsberepairedorreplacedassoonaspossible.
7.
Inspectthejawsanddies.Inspectthejawrollerpinsforsignsofdamage-replacepinsifnecessary.Ifthepinsarewelded
inplace,replacetheentirejawassembly.Ensurediesaresecureinthejaw-replaceworndiesifnecessary.Ensurethat
thejawrollersrotatefreely.Checktoensurethesizeoftheloadedjawsmatchthesizeofcasingorpipeyouarerunning.
8.
Performavisualinspectionofallliftingpoints-ifvisibledamageisseen,includingcracks,brokenlugs,distortedmetal,
etc.replacedamagedpart(s)beforeplacingtonginservice.Alsoinspectallchains,masterlinks,andturnbuckles-again,
ifanydamageisnotedreplacethedamagedpart(s)beforeplacingthetonginservice.
9.
Inspecttongforsignsofprematurewear,ormovingpartsthatarerubbing(baremetalwherethereusedtobepaintisa
goodindicationofwear.
10.
Inspectbackingpin(s).Ifcracked,broken,orbentit(they)mustbereplaced.
11.
Inspecttopandbottombrakebandlinings-replaceifnecessary.Unequalwearofthebrakebandsindicatesthatthe
brakebandtensionisnotevenlyadjusted.Refertothemaintenancesectionofthemanualforinstructionsonproperly
adjustingbrakebands.
12.
Performavisualinspectionofallhydrauliclines.Replaceflexiblelinesiftheyappeartobecracked,fatigued,orhave
visiblesignsofwearfromcontactwitharigidobject.
DO NOT PERFORM ANY FURTHER ACTIONS OR MAINTENANCE WHILE THE TONG IS CON-
NECTED TO ANY HYDRAULIC POWER SUPPLY. FARR RECOMMENDS THAT ALL HYDRAULIC
LINES ARE FULLY DISCONNECTED, AND RESIDUAL HYDRAULIC PRESSURE IS BLED OFF.
ENSURE ADEQUATE CONTAINMENT IS IN PLACE TO PREVENT ENVIRONMENTAL CONTAMI-
NATION FROM RESIDUAL HYDRAULIC FLUID.
2.
Depressurize hyDrAulic system in prepArAtion for mAintenAnce:
1) Rotatethetongtothe“openthroat”position.Ensuretongandbackupdoors(ifequipped)areclosed.Fullyextend
theliftcylinder
2) De-energizethepowerunit.
3) RepeatedlyactuatethetongmotorcontrolvalveleverINBOTHDIRECTIONStodissipateanyresidualpressure
inthevalveandmotor.
4) RemovethehydraulicSUPPLYlinefromtheequipment.
5) RepeatedlyactuatetheremainingcontrolvalveleversINBOTHDIRECTIONStodissipateanyresidualpressure
intheremainderofthehydrauliccontrolsystem.
7) DisconnectthehydraulicRETURNlinefromtheequipment.
8) Disconnectremaininghosessuchascasedrains,orlinesconnectedtotheturnscounter.
HYDRAULIC PRESSURES AS HIGH AS OPERATING PRESSURE MAY REMAIN TRAPPED IN
SMALL AREAS OF THE EQUIPMENT. ENSURE ALL MAINTENANCE IS CARRIED OUT BY A
QUALIFIED SERVICE TECHNICIAN, AND THAT ADEQUATE PERSONAL PROTECTIVE EQUIP-
MENT IS USED TO GUARD AGAINST PRESSURE INJURIES
MaInTEnanCE