Toro 31222 - Fuel System Maintenance; Servicing the Water Separator; Bleeding the Fuel System; Bleeding Air from the Fuel Injectors

FuelSystem
Maintenance
Note:RefertoAddingFuelforproperfuel
recommendations.
DANGER
Undercertainconditions,dieselfuelandfuel
vaporsarehighlyammableandexplosive.Are
orexplosionfromfuelcanburnyouandothersand
cancausepropertydamage.
•Useafunnelandllthefueltankoutdoors,in
anopenarea,whentheengineisoffandiscold.
Wipeupanyfuelthatspills.
•Donotllthefueltankcompletelyfull.Addfuel
tothefueltankuntilthelevelistothebottom
ofthellerneck.
•Neversmokewhenhandlingfuel,andstayaway
fromanopenameorwherefuelfumesmaybe
ignitedbyaspark.
•Storefuelinaclean,safety-approvedcontainer
andkeepthecapinplace.
ServicingtheWaterSeparator
ServiceInterval:Every400hours
Drainthewaterorothercontaminantsfromthewater
separator(
Figure39)daily.Replacetheltercanisterafter
every400hoursofoperation.
1.Placeacleancontainerunderthefuellter.
2.Loosenthedrainplugonthebottomofthelter
canister(Figure39).
Figure39
1.Waterseparatordrainplug
3.Cleantheareawheretheltercanistermounts.
4.Removetheltercanisterandcleanthemounting
surface.
5.Lubricatethegasketontheltercanisterwithcleanoil.
6.Installtheltercanisterbyhanduntilthegasket
contactsmountingsurface,thenrotateitanadditional
1/2turn.
7.Tightenthedrainplugonthebottomofthelter
canister.
BleedingtheFuelSystem
Youmustbleedthefuelsystembeforestartingtheengineif
anyofthefollowingsituationshaveoccurred:
•Initialstartupofanewmachine.
•Enginehasceasedrunningduetolackoffuel.
•Maintenancehasbeenperformeduponfuelsystem
components;i.e.,lterreplaced,separatorserviced,etc.
1.Parkthemachineonalevelsurfaceandensurethatthe
fueltankisatleasthalffull.
2.Openthehoodandsecureitwiththeproprod.
3.Opentheairbleedscrewonthefuelinjectionpump
(Figure40)witha12mmwrench.
Figure40
1.Bleedscrew
4.TurnthekeyintheignitionswitchtotheOnposition.
Theelectricfuelpumpwillbeginoperation,thereby
forcingairoutaroundtheairbleedscrew.Leavethe
keyintheOnpositionuntilasolidstreamoffuelows
outaroundthescrew .
5.TightenthescrewandturnthekeytotheOffposition.
Note:Normally,theengineshouldstartaftertheabove
bleedingproceduresarefollowed.However,ifenginedoes
notstart,airmaybetrappedbetweeninjectionpumpand
injectors;refertoBleedingAirfromtheInjectors.
BleedingAirfromtheFuel
Injectors
Note:Thisprocedureshouldbeusedonlyifthefuelsystem
hasbeenpurgedofairthroughnormalprimingprocedures
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