Napa 6-798 Instruction Manual - Troubleshooting
6-798
7
rev./9/0
trOuBLeSHOOtinG
please revieW all Warning insTrucTions prior To operaTion. save This Manual for fuTure reference.
iMpacT Wrenches
TOOLRUNSSLOWLYORNOTATALLAND/ORAIRFLOWSONLYSLIGHTLYFROMExHAUST—Thisisprobablycausedby:airflow
blockedbydirtbuild-up;motorpartsjammedwithdirt;powerregulatorhasvibratedtoclosedposition.
you should:Checkairinletstrainerforblockage.Pouragenerousamountofairtooloilintoairinlet.Operatetoolinshort
bursts,inbothforwardandreversemotion.Repeatifnecessary.Iftoolperformanceisnotimproved,itshouldbeserviced
atanauthorizedservicecenter.
Tool Will noT run, exhausT air floWs freely.Thisisprobablycausedbyoneormoremotorvanesstuckduetoaccumula-
tionofsludgeorvarnish;motorrusted.
you should:Pouragenerousamountofairtooloilintoairinlet.Operatetoolinshortbursts,inbothforwardandreverse
motion.Lightlytapmotorhousingwithplasticmallet.Detachairsupply.Trytofreemotorbyturningdriveshankmanually,
ifpossible.Iftoolremainsjammed,itshouldbeservicedatauthorizedservicecenter.
sockeTs Will noT sTay on.Thisisprobablycausedby:wornsocketretainerringorsoftback-upring.
you should:Wearsafetygoggles.Detachairsupply.Usingexternalretainingringpliers,removeoldretainingring.Holding
squaredrivewithappropriateopen-endwrench,usesmallscrewdrivertopryoldretainerringoutofgroove.Alwayspry
offringawayfromyourbody-itcanbepropelledoutwardathighvelocity.Replaceback-upO-ringandretainerringwith
correctnewparts.(seebreakdown).Placeretainingringontable,presstoolanvilintoringinarockingmotion.Snapinto
groovebyhand.
preMaTure anvil Wear.Thisisprobablycausedby:useofchromesocketsorwornsockets.
you should:Stopusingchromesockets.Chromesocketshaveahardsurfaceandasoftcore.Driveholebecomesrounded-but
willstillbeveryhard.Besidesthedangerofsplitting,wrenchanvilswillwearoutprematurelywhenusedwithchromesock-
ets.
Tool sloWly loses poWer BuT sTill runs aT full free speed.Thisisprobablycausedby:wornorstickingclutchparts,due
toinadequatelubrication.
you should:FOROILLUBEDWRENCHES-checkforpresenceofclutchoil(whereoilisspecifiedforclutch)andremoveoilfill
plug;tilttodrainalloilfromclutchcase;refillwith0weightSAEoilorthatrecommendedbymanufacturer,inthespeci-
fiedamount.Alsocheckforexcessclutchoil.Clutchcasesneedonlybefilled50%.Overfillingcancausedragonhighspeed
clutchparts.Atypical/2"oil-lubedwrenchonlyrequires/2ounceofclutchoil.FORGREASELUBEDWRENCHES-Checkfor
excessgreasebyrotatingdriveshankbyhand.Itshouldturnfreely.Excessisusuallyexpelledautomatically.
Tool Will noT shuT off.Thisisprobablycausedby:throttlevalveO-ringbrokenoroutofpositionorthrottlevalvestembent
orjammedwithdirtparticles.
you should:RemoveassemblyandinstallnewO-ring.Lubricatewithairtooloilandoperatetriggerbriskly.Ifoperationcannot
berestored,toolshouldbeservicedatauthorizedservicecenter.
air raTcheTs
MOTORRUNS.SPINDLEDOESN'TTURN,ORTURNSERRATICALLY—Thisisprobablycausedby:wornteethonratchetorpawl;
weakorbrokenpawlpressurespring;weakdragspringsfailtoholdspindlewhilepawladvancesforanotherbite.
you should:havereplacementpartsinstalledbyauthorizedservicecenter.
Tool doesn’T run, raTcheT head indexes crisply By hand— Thisisprobablycausedby:dirtorsludgebuild-upinmotor
parts.
you should:Pouragenerousamountofairtooloilintoairinlet.Operatethrottleinshortbursts.Withsocketengagedon
bolt,alternatelytightenandloosenboltbyhand.Iftoolremainsjammed,itshouldbeservicedatauthorizedservicecenter.
nOte
Disassembly of this tool by other than an authorized service center WILLVOID the warranty on this tool.
(Continued on page 8)
5
Drive................................."
TorqueRange...................50-200ft./lbs.
Max.Torque....................500ft./lbs.
OverallLength.................9.5"
NetWt.............................8.5L
BS.
Avg.AirCons...................9CFM
AirInlet............................/2"NPT
Min.HoseSize................./2"ID
Recom..AirPressure........90
PSIG
FreeSpeed........................4000
RPM
SoundLevel......................97dBA