Toro Groundsmaster 4300-D - Testing the Hydraulic System

TestingtheHydraulicSystem
Themosteffectiveproceduretoisolatetheproblemsinthehydraulicsystemisto
usehydraulictestequipment,suchaspressuregaugesandowmetersinthe
circuitsduringdifferentoperationalchecks;refertoSpecialT ools(page4–31).
WARNING
Openingthehydraulicsystemwithoutreleasingpressurefromthe
systemwillcausethehydraulicuidtoescape,causingpossible
injury.
Beforeyoudisconnectthehydrauliccomponentsorworkonthe
hydraulicsystem,releasethepressureinthesystem;referto
ReleasingPressurefromtheHydraulicSystem(page4–6).
WARNING
Hydraulicuidescapingunderpressurecanpenetrateskinand
causeinjury.
•Keepyourbodyandhandsawayfrompin-holeleaksornozzles
thatejecthydraulicuidunderhighpressure.
•Donotuseyourhandstosearchforleaks;useapieceofpaper
orcardboard.
•Hydraulicuidescapingunderpressurecanhavesufcientforce
topenetratetheskinandcauseseriousinjury.
•Ifhydraulicuidisinjectedintoyourskin,theuiddamageto
yourbodymustbesurgicallyremovedwithinafewhoursbya
doctorfamiliarwiththisformofinjuryorgangrenemayresult.
CAUTION
Failingtousegaugeshavingtherecommendedpressure(kPa/psi)
ratingcoulddamagethegaugeandcausepersonalinjuryfrom
contactwithhot,leakinghydraulicuid.
Usegaugeswiththerecommendedpressureratingaslistedinthe
testprocedures.
IMPORTANT
Beforeperformingthehydraulictests,checkallobviousareas,such
asuidsupply,lter,bindinglinkages,loosefasteners,orimproper
adjustmentsbeforeyouassumethatahydrauliccomponentisthe
sourceoftheproblem.
HydraulicSystem:TestingtheHydraulicSystem
Page4–44
Groundsmaster
®
4300-D
16226SLRevC