Toro 41198 Multi-Pro 1250 - Emergency Manual Operation of the Boom Actuators; Inspecting the Nylon Pivot Bushings

Iftheactuatorrodexhibitsanaxialmovement(travels
intooroutofthecylinder)greaterthan0.085-0.100inch
(2.16-2.54mm),youmaywishtobleedtheairfromthe
hydraulicoil.
RefertotheServiceManualforinstructionsonhowto
bleedairfromtheactuatorsorcontactanAuthorized
ToroServiceDistributor.
EmergencyManualOperation
oftheBoomActuators
Note:Determinetheleftandrightsidesofthemachine
fromthenormaloperatingposition.
DANGER
Useofthemanualreliefvalvemaycausetheboom
tomovesuddenlyandcauseinjurytoyouorothers.
•Takecautionandadjustthemanualreliefvalve
slowly.
•Ensurethesurroundingareaisclearandnoone
isinsidetheoperatingrangeoftheboom.
CAUTION
Adjustingthemanualreliefvalvewithelectrical
powerpresentcouldcausetheactuatoroperate
irregularlyandcauseinjurytoyouorothers.
Do not usethemanualreliefvalvewhileelectrical
powerisbeingsuppliedtotheactuator.
Incaseofanemergencysuchthattheboommustbe
movedandno12VDCpowersourceisavailable,the
manualreliefvalvecanbeusedtorelievepressurewithin
theactuatorandallowtheboomstobemovedmanually.
Important:Themanualvalvemustnotbeloosened
morethan4turns.Turningthevalvemorethan4
turnsmaycausethevalvetocomeoffcompletely
allowinghydraulicoiltospillout.
1.Locatethemanualreliefvalveontheactuatorfor
eachboom.Themanualreliefvalveisthesmaller
valveandisonlyononesideoftheactuatorbody
(
Figure71).
Figure71
1.Actuator,rightboom
2.Manualreliefvalve
Note:Duetotheopposingorientationofactuators
inrespecttoeachotherthemanualreliefvalveison
theforwardfaceoftheleftboomactuatorandthe
rearfaceoftherightboomactuator.
2.Useahexagonalwrenchtoloosenthemanualrelief
valvenomorethan2-3turns.Thecylindershould
startstrokingmanuallyorbyexternalpressureatthis
time.
3.Oncetheoriginalpositionoftheactuatoris
recovered,closethemanualreliefvalve.Torquethe
valveto1.1-2.1ft-lb(1.5-2.9N-m).
InspectingtheNylonPivot
Bushings
ServiceInterval:Every400hours/Yearly(whichever
comesrst)
1.Positionthesprayeronalevelsurface,settheparking
brake,stopthepump,stoptheengine,andremove
theignitionkey.
2.Extendtheboomstothespraypositionandsupport
theboomsusingstandsorstrapsfromalift.
3.Withtheweightoftheboomsupported,remove
theboltandnutsecuringthepivotpintotheboom
assembly(
Figure72).Removethepivotpin.
57