Toro Groundsmaster 4500-D Series - Page 237

DeckControlManifoldService(GM4500-D)(continued)
g308894
Figure127
1.Manifoldbody3.Zeroleakplug(#6)
2.Zeroleakplug(#4)
Note:Thedeckcontrolmanifoldusesseveralzeroleakplugs.Theseplugshave
ataperedsealingsurfaceontheplugheadthatisdesignedtoresistvibration
inducedplugloosening.ThezeroleakplugsalsohaveanO-ringasasecondary
seal.Ifzeroleakplugremovalisnecessary,lightlyraptheplugheadusingapin
punchandhammerbeforeusinganallenwrenchtoremovetheplug:theimpact
willallowplugremovalwithlesschanceofdamagetotheheadoftheplug.
Forsolenoidandcontrolvalveserviceprocedures,seeDeckControlManifold
Service(GM4500-D)(page5–134).RefertoFigure126andFigure127for
cartridgevalveandpluginstallationtorque.
Note:Apilotpiston(item6)isplacedbeneatheachofthereliefvalvesindeck
controlmanifoldportsRV8andRV9.Ifareliefvalveisremovedfromthe
manifold,makesuretoremovepilotpistonandlabelitspositionforassembly
purposes.Wheninstallingthepilotpistoninthemanifold,makesurethatthe
pilotpistonslidesfullyintotheportbeforeinstallingreliefvalve.
Groundsmaster
®
4500-D/4700-D
Page5–135
HydraulicSystem:ServiceandRepairs
19245SLRevA