Toro Groundsmaster 7210 - Checking the Hydraulic Lines and Hoses; Priming the Hydraulic Pumps

AfterRepairingorReplacingtheComponents(continued)
Fitting)(page4–5)andInstallingtheHydraulicFittings(SAEStraightThread
O-RingFittingintotheComponentPort)(page4–7).
5.Afteryoucompletetherepairs,checkthecontrollinkagesorcablesfor
properadjustment,binding,orbrokenparts.
6.Afteryoudisconnectorreplaceanyhydrauliccomponents,operatethe
machinefunctionsslowlyuntiltheairisoutofthesystem;refertoCharging
theHydraulicSystem(page4–61).
7.Checkforhydraulic-uidleaks.Shutofftheengineandrepairleaksif
necessary.
CheckingtheHydraulicLinesandHoses
WARNING
Hydraulicuidescapingunderpressurecanpenetrateskinand
causeinjury.
•Ensurethatallhydraulic-uidhosesandlinesareingood
conditionandallhydraulicconnectionsandttingsaretight
beforeapplyingpressuretothehydraulicsystem.
•Keepyourbodyandhandsawayfrompinholeleaksornozzles
thatejecthigh-pressurehydraulicuid.
•Useapieceofcardboardorpapertondhydraulicleaks.
•Releaseallpressureinthehydraulicsystembeforeperforming
anyworkonthesystem.
•Seekimmediatemedicalattentionifhydraulicuidisinjected
intoyourskin.
IMPORTANT
Checkthehydrauliclinesandhosesdailyforleaks,kinkedlines,
loosemountingsupports,wear,loosettings,weatherdeterioration,
andchemicaldeterioration.Repairthedamagedhydraulicequipment
beforeoperatingthemachine.
PrimingtheHydraulicPumps
Whenthehydraulicsystemisushed,thehydraulicsystemischarged,orthe
hydrauliccomponentsareinstalled,itisimportanttoproperlyprimethehydraulic
pumps.Thehydraulicpumpprimingensuresthatthegearpumpandpiston
(traction)pumphavesufcientuidduringinitialstart-upandrunning.The
pumpscanbeprimedbyusingaremotestarterswitch(refertoSpecialT ools
(page4–23))tocranktheenginewhichallowsthepumpstoprime.
Usethefollowingproceduretoprimethehydraulicpumps:
1.EnsurethatthekeyswitchisintheOFFpositionandthekeyisremoved
fromthekeyswitch.
2.Checkthehydraulic-uidlevelinthehydraulicreservoirandaddcorrect
quantityofuidifnecessary;refertotheTractionUnitOperator’sManual.
HydraulicSystem:ServiceandRepairs
Page4–58
Groundsmaster7210
16222SLRevC