Toro Groundsmaster 4300-D - Page 170

DisassemblingtheGearPump
Note:Thegearpumpmustbereplacedasacompleteassembly.Individual
gears,housings,andthrustplatesarenotavailableseparately.Disassemblethe
gearpumpforcleaning,inspection,andsealreplacementonly.
IMPORTANT
Keepbodies,gears,anges,andthrustplatesforeachpumpsection
together;donotmixthepartsbetweenthepumpsections.
1.Plugthepumpportsandcleantheoutersurfaceofthepumpwithcleaning
solvent.Ensurethattheworkareaisclean.
g193294
Figure90
2.Useamarkertomakeadiagonallineacrossthegearpumpforassembly
purposes(Figure90).
IMPORTANT
Usecautionwhenclampingthegearpumpinavisetoavoid
distortinganypumpcomponents.
3.Securethefrontcoverofthepumpinavisewiththedriveshaftpointingdown.
4.Loosenthe2bolts(item21inFigure89)and2nutsthatsecuresthepump
assembly.
5.Removethepumpfromtheviseandremovethefasteners.
6.Supportthepumpassemblyandgentlytapthepumpcasewithasoft-faced
hammertoloosenthepumpsections.Donotdropthepartsordisengage
thegearmesh.
IMPORTANT
Marktherelativepositionsofthegearteethandthrustplatessothat
youcanbeassembletheminthesameposition.Donottouchthe
gearsurfacesasresidueonhandsmaybecorrosivetogearnish.
7.Removethethrustplatesandsealsfromeachpumpsection.Before
removingeachgearset,applymarkingdyetothematingteethtoretain
HydraulicSystem:ServiceandRepairs
Page4–108
Groundsmaster
®
4300-D
16226SLRevC