Toro Groundsmaster 5900 Series - Page 187

GearPumpRemoval(Figure81)(continued)
5.Topreventcontaminationofhydraulicsystemduringpumpremoval,
thoroughlycleanexteriorofpumpandttings.
6.Labelallhydraulichoseconnectionsforassemblypurposes.
7.Disconnectallhydrauliclinesfromgearpumpandtwo(2)hydraulichoses
frombottomofpistonpump(items15and16).Putcapsorplugsonopen
hydrauliclinesandttings.Labeldisconnectedhydrauliclinesforproper
reassembly.
CAUTION
Makesuregearpumpisproperlysupportedbeforeremovingthe
pumpmountingscrews.Gearpumpassemblyweighsapproximately
30kg(68lb).
8.Supportgearpumpassemblytopreventitfromfalling.
9.Removetwo(2)capscrewsandatwashersthatsecuregearpumptopiston
pump.Removegearpumpfrommachine.
10.LocateanddiscardO−ringbetweengearpumpandpistonpump(item3).
11.Ifhydraulicttingsaretoberemovedfromgearpump,markttingorientation
toallowcorrectassembly.RemovettingsfrompumpanddiscardO−rings.
GearPumpInstallation(Figure81)
1.Ifttingswereremovedfromgearpump,lubricateandplacenewO−rings
ontottings.Installttingsintopumpopeningsusingmarksmadeduringthe
removalprocesstoproperlyorientatettings.Tightenttings(seeInstalling
HydraulicHosesandTubes(O-RingFaceSeal)(page5–7)).
2.ApplycleanpetroleumjellyorlightgreasetonewO−ring(item3)andposition
O−ringinpistonpump.
3.Applyantiseizelubricanttosplinesofgearpumpshaftandpositiongear
pumptopistonpump.Aligngearpumpinputshaftsplineswithpistonpump
couplerandslidegearpumpinputshaftintopistonpumpcoupler.Secure
gearpumptopistonpumpwithtwo(2)atwashersandcapscrews.Tighten
screwsfrom112to140N·m(83to103ft−lb).
4.Removecapsorplugsfromhydrauliclinesandttings.Installhydrauliclines
togearpump(seeInstallingHydraulicHosesandTubes(O-RingFaceSeal)
(page5–7)).Tighten1in.hoseclampfrom5to6N·m(45to55in−lb)and
1−1/4in.hoseclampsto10N·m(90in−lb).
5.Removeandreplacehydrauliclters.
6.Fillhydraulicreservoirwithnewhydraulicoil.
7.Properlyllhydraulicsystem(seeChargeHydraulicSystem(page5–79)).
8.Stopengineandcheckforhydraulicoilleaks.Checkhydraulicreservoir
oillevel.
9.Installsideshroudsifpreviouslyremovedandclosehood(seeHoodand
LowerShrouds(page7–47)).
Groundsmaster
®
5900&5910
Page5–87
HydraulicSystem:ServiceandRepairs
16227SLRevB