Toro Groundsmaster 360 - Page 121

Performthegearpumpowtestifyouidentifyasteeringorcuttingdeckraise
andlowerproblem.Thistestdeterminesifthehydraulicowfromthegear
pumpiscorrect.
TestProcedure
Note:Overaperiodoftime,thegearsandwearplatesinthegearpumpcan
wear.Awornpumpmaybypassthehydraulicuidandmakethepumpless
efcient.Aftersometime,sufcientuidlosswilloccurandcausethecuttingunit
motorstostallunderheavycuttingconditions.Continuedoperationwithaworn,
inefcientpumpcangenerateexcessiveheat,causedamagetothesealsand
othercomponentsinthehydraulicsystem.
1.Ensurethatthehydraulicuidisatnormaloperatingtemperature.
2.EnsurethatthetractiondriveiscorrectlyadjustedfortheNEUTRALposition.
CAUTION
Beforeopeningthehydraulicsystem,operateallthehydraulic
controlstoreleasesystempressureandavoidinjuryfromthe
pressurizedhydraulicuid;refertoReleasingPressurefromthe
HydraulicSystem(page4–5).
g036476
Figure57
1.Transmission
3.Lowertting
2.Hydraulichose
4.Gearpump
3.Parkthemachineonalevelsurface,lowerthecuttingdeck,shutoffthe
engine,andsettheparkingbrake.
4.ReadallWarning,Cautions,andprecautionslistedatthebeginningofthis
section.
5.Cleanthejunctionofthehydraulichoseandlowerttingonthegearpump.
6.Disconnectthehydraulichosefromthelowerttingonthegearpump(Figure
57).
7.Installahydraulictester(pressureandow)inserieswiththegearpump
ttinganddisconnectedhose.Ensurethatthetesterowarrowpointsfrom
thepumpoutletportandtowardthedisconnectedhose.Ensurethatthe
ow-controlvalveonthetesterisfullyopen.
Groundsmaster360
Page4–63
HydraulicSystem:TestingtheHydraulicSystem
16225SLRevC