User's Manual

Repair
Repair Repair
Repair
Prepare Prepare
Prepare
the the
the
Gun Gun
Gun
for for
for
Service Service
Service
Toreducetheriskofre,explosion,orelectric
shock:,beforeushingthegun.
•FollowtheFluidVoltageDischargeand
GroundingProcedure,page30,andturnOFF
(O)theESOn-Offswitchbeforeushing,
checking,orservicingthesystemandwhenever
youareinstructedtodischargethevoltage.
•Cleanallpartswithanon-ammableuidas
denedunderModels,page3.
•Donotservicethisequipmentunlessyouare
trainedandqualied.
•Donottouchthegunnozzleorcomewithin4in.
(102mm)ofthenozzleduringgunoperationor
untilyouperformtheFluidVoltageDischarge
andGroundingProcedure,page30.
•Checkallpossibleremedies
inTroubleshooting,page43beforedisassembling
thegun.
•Useavisewithpaddedjawstopreventdamage
toplasticparts.
•Lubricatesomepackingrodparts(2)andcertain
uidttingswithdielectricgrease(44),asspecied
inthetext.
•Lightlylubricateo-ringsandsealswithnon-silicone
grease.OrderPartNo.111265Lubricant.Donot
over-lubricate.
•OnlyusegenuineGracoparts.Donotmixoruse
partsfromotherProGunmodels.
•AirSealRepairKit24N789isavailable.The
kitmustbepurchasedseparately.Kitpartsare
markedwithanasterisk,forexample(6a*).
•FluidSealRepairKit24N790isavailable.The
kitmustbepurchasedseparately.Kitpartsare
markedwithasymbol,forexample(2a‡).
1.FollowtheFluidVoltageDischargeand
GroundingProcedure,page30.
2.Flushthegun.SeeFlushing,page36.
3.Blowtheuidlinesdrywithair.
4.Relievethepressure.See
PressureReliefProcedure,page31.
5.Disconnectthegunairanduidlinesatthe
isolationsystem.
6.Removethegunfromtheworksite.Repairarea
mustbeclean.
50 3A2496D