Farr HD8625 - Page 65

Technical Manual
hD8625 8-
5
/
8
” 35K Tong
3.23
MainTenance
21.
Whilerotatingthecageplate,ensurethatthejawsproperlycam.Ifthejawsdonotcamproperly,thebrakebandsneed
tobetightened.IncrementallyadjustboththetopandbottombrakebandsEQUALLYuntilpropercamactionisachieved.
13.
Performacompletegreasingofthetong-refertoMaintenancesectionofthetechnicalmanual
14.
Ensuremainsupplyandreturnconnectionstothetongarefullymadeup.Re-connecttheremainderofthehydrauliclines,
and,ifapplicable,theelectricallinetotheturnscounter.
FAILURE TO ENSURE THAT THE SELF-SEALING SUPPLY AND RETURN LINES ARE FULLY MADE
UP MAY RESULT IN CATASTROPHIC EQUIPMENT FAILURE.
NEVER OPERATE YOUR EQUIPMENT WITH A BYPASSED OR MALFUNCTIONING SAFETY DOOR
15.
Performavisualinspectionoftheloadcell.Ifusingatensionloadcell,replaceanycracked,broken,ordistortedcom-
ponentsincludinglinksandchains.Ifusingacompressionloadcell,replaceanycomponentthathasbeencrushedor
otherwisedistortedthroughcompression.Inspecthydraulicline,fittings,anddiaphragmsealsforfluidleaks.
16.
Ifapplicable,inspecttheloadcellanchorpins(tensionloadcellonly).Replacetheanchorpinsifcrackingormetaldistor-
tionisseen.
Ifusingastand-alonepowerunit,startitnow-refertothepowerunittechnicalmanualforstartupprocedures.Listentopowerunitfor
amomenttoseeifthereareanyunusualmechanicalsounds(rubbing,grinding,excessivepumpnoise).Ifusingadieselunit,allow
sufficienttimefortheenginetoreachoperatingtemperaturebeforeincreasingengineRPM.Onceengineiswarm,graduallyincrease
engineRPMuntiloperatingspeedisreached.
17.
Ensurethatsupplypressureisatorabovethetong’sspecifiedoperatingpressure,andthatthereturnpressureisless
than350psi.
18.
Performavisualinspectionofpressurizedhydrauliclines.Documentandcorrectanyhydraulicfluidleaks.
19.
Performafullfunctionaltestofthetong(refertosection2.I.4).
20.
Testsafetydoorfeature(ifequipped).Openthetongdoor(s),andattempttorotatethecageplateatlowspeed(lowgear)
inbothdirections(makeupandbreakout).Ifcageplatebeginsrotating,thesafetydoormechanismisnotfunctional,and
thetongmustberemovedfromserviceuntilthesafetydoormechanismcanberepaired.Ifthesafetydoorisoperating
correctly,cageplaterotationwillnotbeinhibitedoncethedoorisclosedandlatched.