Toro 74990 - Hydraulic System Maintenance; Servicing the Hydraulic System

HydraulicSystem
Maintenance
ServicingtheHydraulic
System
HydraulicOilType:T oro
®
HYPR-OIL
™
500hydraulic
oilorMobil
®
115W-50.
Important:Useoilspecied.Otheruidscould
causesystemdamage.
EachHydraulicSystemOilCapacity:1.5L(1.59
USqt)persidewithlterchange
CheckingtheHydraulicOil
ServiceInterval:Every50hours—Checkthe
hydraulicoillevel.
1.Positionthemachineonalevelsurface.
2.DisengagethePTO,movethemotion-control
leverstotheneutral-lockedpositionandsetthe
parkingbrake.
3.Stoptheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
4.Allowtheengineandthehydraulicsystemto
coolfor10minutes.
Note:Theoillevelonthedipstickwillbe
incorrectiftheoilischeckedwhenthemachine
ishot.
5.Movetheseatforward.
6.Cleantheareaaroundthedipsticksofthe
hydraulic-systemreservoirs(Figure87).
7.Removeonedipstickfromthehydraulicreservoir
(Figure87).
8.Wipethedipstickoffandthreadthedipstickinto
thereservoir.
9.Removethedipstickandlookattheend(Figure
87).Iftheoillevelisattheaddmark,slowly
pouronlyenoughoilintothehydraulicreservoir
toraisetheleveltothefullorHline.
Important:Donotoverllthehydraulic
unitswithoilasdamagemayoccur.Donot
runthemachinewiththeoilbelowtheadd
mark.
10.Installthedipstick.
11.Repeatprocedurefortheoppositedipstick.
g015459
Figure87
Eitherdipstickwillbeusedinthemachine
1.Full3.H—meanshighlevel
2.Add4.Dipsticklocationsunder
seat
WARNING
Hydraulicoilescapingunderpressure
canpenetrateskinandcauseinjury.
•Ifhydraulicoilisinjectedintotheskin
itmustbesurgicallyremovedwithin
afewhoursbyadoctorfamiliarwith
thistypeofinjury.Gangrenemay
resultifthisisnotdone.
•Keepbodyandhandsawayfrompin
holeleaksornozzlesthatejecthigh
pressurehydraulicoil.
•Usecardboardorpapertond
hydraulicleaks.
•Safelyrelieveallpressureinthe
hydraulicsystembeforeperforming
anyworkonthehydraulicsystem.
•Makesureallhydraulicoilhosesand
linesareingoodconditionandall
hydraulicconnectionsandttings
aretightbeforeapplyingpressureto
hydraulicsystem.
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