Toro Groundsmaster 4500-D Series - Page 239

DeckControlManifoldService(GM4700-D)(continued)
g308898
Figure129
1.Manifoldbody3.Zeroleakplug(#4)
2.Zeroleakplug(#6)
Note:Thedeckcontrolmanifoldusesseveralzeroleakplugs.Theseplugshave
ataperedsealingsurfaceontheplugheadthatisdesignedtoresistvibration
inducedplugloosening.ThezeroleakplugsalsohaveanO-ringasasecondary
seal.Ifzeroleakplugremovalisnecessary,lightlyraptheplugheadusinga
punchandhammerbeforeusinganallenwrenchtoremovetheplug:theimpact
willallowplugremovalwithlesschanceofdamagetotheheadoftheplug.
Forsolenoidandcontrolvalveserviceprocedures,seeDeckControlManifold
Service(GM4500-D)(page5–134).RefertoFigure128andFigure129for
cartridgevalveandpluginstallationtorque.
IMPORTANT
Apilotpiston(item6)isplacedbeneatheachofthereliefvalvesin
deckcontrolmanifoldportsRV8,RV9,RV10andRV11.Ifarelief
valveisremovedfromthemanifold,makesuretoremovepilot
pistonandlabelitspositionforassemblypurposes.Wheninstalling
thepilotpistoninthemanifold,makesurethatthepilotpistonslides
fullyintotheportbeforeinstallingreliefvalve.
Groundsmaster
®
4500-D/4700-D
Page5–137
HydraulicSystem:ServiceandRepairs
19245SLRevA