Toro Groundsmaster 7210 - Page 172

AssemblingtheGearPump(continued)
4.LubricateandinstalltheO-ringsintothebody.
5.Lubricateandinstallthepressuresealsintothemachinedgroovesofthe
bearingblocksandcarefullyplacetheback-upringsintothegrooves.
6.Lubricatethegearfacesandbearingsurfacesofthedrivegear,idlergear,
andbearingblockswithcleanhydraulicuid.
7.Usetheidenticationmarksthatyoumadeduringdisassemblyandcarefully
assemblethebearingblocksandgears.
8.Positionthepumpbodyonitsside.
9.Usetheidenticationmarksthatyoumadeduringdisassemblyandcarefully
slidethebearingblockandgearassemblyintothebodycavity.
10.Removeexcesslubricationfromthematingsurfacesofthebody,backplate,
andfrontplate.Ensurethatthesesurfacesarecleananddry.
11.Installthe2dowelpinsintothebody.
IMPORTANT
DonotdislodgetheO-rings,pressureseals,orback-upringsduring
nalassembly.
12.Usethemarkerlinesforproperlocation,gentlyslidethebackplateontothe
assembly,andengagethedowelpinswithrmhandpressure.
13.Placeathinsleeveortapeonthepumpshaftsplinestopreventsealdamage.
14.Positionthepumpwithbackplatedownwards.
15.Usethemarkerlinesforproperlocationandcarefullyslidethefrontplate
ontotheassembly.
Note:Donotdamagethesealduringthefrontplateinstallation.
16.Removethesleeveortapefromtheshaftsplines.
17.Installthe4socket-headscrewswiththe4lockwashersandtightenthem
byhand.
IMPORTANT
Clampingthepumpbodyinavisecoulddamagethepump.When
youclampthepumpinavise,clampthemountingangeonly.
18.Clampthemountingangeofthepumpinavisewiththeshaftenddown.
19.Alternatelytorquethe4socket-headscrewsto25N∙m(220in-lb).
20.Iftheimplementreliefvalvewasremovedfromthebackplate,installthe
reliefvalvetothebackplate;torquethereliefvalveto25N∙m(220in-lb).
21.Putasmallamountofhydraulicuidintheinletportofthepumpandrotate
theinputshaftfor1revolution.Placethecouplerontheinputshaft,use
pliersonthecouplerandrotatethepumpshaft.Iftheinputshaftbinds,
disassemblethepumpandrepeattheassemblyprocess.
22.Removethepumpfromthevise.
HydraulicSystem:ServiceandRepairs
Page4–112
Groundsmaster7210
16222SLRevC