Toro 41177 - Adjusting the Boom Actuator; Emergency Manual Operation of the Boom Actuators

ChangingthePumpDriveGearbox
Fluid
ServiceInterval:Every400hours/Yearly(whichever
comesrst)
1.Positionthesprayeronalevelsurface,settheparking
brake,stopthepump,stoptheengine,andremove
theignitionkey.
2.Placeapanunderthedrainplugonthepumpdrive
gearbox(Figure73).
Figure73
1.Pumpdrivegearbox3.Drainplug
2.Filltube
3.Removethellpluganddrainplug(Figure73),
allowingtheoiltodrainintothepan.
4.Installandtightenthedrainplugwhentheuid
stopsdraining.
5.Addapproximately1quart(1L)ofMobilSHC634
SyntheticLubricanttothelltube.
Important:UseonlyMobilSHC634Synthetic
Lubricantorequivalentsyntheticuidinthe
gearbox.Non-syntheticoilsmaybreakdown
causingdamagetothepumpgearbox.
6.Installthellplug.
AdjustingtheBoomActuator
ServiceInterval:Every400hours—Checkboom
actuatorhydraulicoilforairbubbles.
1.Positionthesprayeronalevelsurface,lowerthe
boomsintothesprayposition.
2.Settheparkingbrake,stopthepump,stopthe
engine,andremovetheignitionkey
3.Attempttolifttheboombyapplyingamoderate
amountofpressure(justenoughtolifttheboom
manually)whileobservingtheactuatorrod.Ifthe
actuatorrodexhibitsmovementrefertobelow.
4.Repeattheprocedurefortheopposingboom.
Iftheactuatorrodexhibitsanaxialmovement(travels
intooroutofthecylinder)greaterthan0.085-0.100inch
(2.16-2.54mm),youmaywishtobleedtheairfromthe
hydraulicoil.
RefertotheServiceManualforinstructionsonhowto
bleedairfromtheactuatorsorcontactanAuthorized
ToroServiceDistributor.
EmergencyManualOperation
oftheBoomActuators
Note:Determinetheleftandrightsidesofthemachine
fromthenormaloperatingposition.
Useofthemanualreliefvalvemaycausethe
boomtomovesuddenlyandcauseinjurytoyou
orothers.
•Takecautionandadjustthemanualrelief
valveslowly.
•Ensurethesurroundingareaisclearand
nooneisinsidetheoperatingrangeofthe
boom.
Adjustingthemanualreliefvalvewithelectrical
powerpresentcouldcausetheactuatoroperate
irregularlyandcauseinjurytoyouorothers.
Do not usethemanualreliefvalvewhile
electricalpowerisbeingsuppliedtothe
actuator.
Incaseofanemergencysuchthattheboommustbe
movedandno12VDCpowersourceisavailable,the
manualreliefvalvecanbeusedtorelievepressurewithin
theactuatorandallowtheboomstobemovedmanually.
Important:Themanualvalvemustnotbeloosened
morethan4turns.Turningthevalvemorethan4
turnsmaycausethevalvetocomeoffcompletely
allowinghydraulicoiltospillout.
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