Toro 08703 - Charging the Hydraulic System

ChargingtheHydraulic
System
Wheneverahydrauliccomponentisrepairedor
replaced,changethehydrauliclterandchargethe
hydraulicsystem.
Ensurethatthehydraulicreservoirandthelterare
lledwithuidatalltimeswhenchargingthehydraulic
system.
1.Parkthemachineonalevelsurface,shutoffthe
engine,engagetheparkingbrake,andremove
thekey.
2.Loosenthe2screwssecuringthecentershroud
tothemachineandremovetheshroud(Figure
47).
g002727
Figure47
1.Centershroud
3.Raisethefrontwheeland1oftherearwheels
offtheoorandplacesupportblocksunderthe
frame.
WARNING
Thefrontwheeland1rearwheelmustbe
raisedofftheground,orelsethemachine
willmoveduringtheadjustment.This
couldcausethemachinetofalland
injuresomeoneunderthemachine.
Makesurethatthemachineisadequately
supported,withthefrontwheeland1
rearwheelraisedofftheground.
4.Starttheengineandsetthethrottletoallowthe
enginetorunatapproximately1,800rpm.
5.Actuatethelift-valveleveruntilthelift-cylinder
rodmovesinandoutseveraltimes.Ifthe
cylinderroddoesnotmoveafter10to15
secondsorthepumpemitsabnormalsounds,
shuttheengineoffimmediatelyanddetermine
thecauseorproblem.Inspectforthefollowing:
•Looselterorsuctionlines
•Looseorfaultycoupleronthepump
•Blockedsuctionline
•Faultycharge-reliefvalve
•Faultychargepump
Ifthecylindermovesin10to15seconds,
proceedtostep6.
6.Operatethetractionpedalinforwardand
reverse.Thewheelsthatareofftheoorshould
rotateintheproperdirection.
•Ifthewheelsrotateinthewrongdirection,
shutofftheengine,removethelinesfromthe
rearofthepump,andreversethelocations.
•Ifthewheelsrotateintheproperdirection,
shutofftheengineandadjustthe
spring-adjustingpinlocknut(Figure48).
Adjustthetractionneutralposition;refer
toAdjustingtheTractionDriveforNeutral
(page29).
g027228
Figure48
1.Spring-adjustingpin3.Cam
2.Bearing
7.Checktheadjustmentofthetractioninterlock
switch;refertoAdjustingtheTractionInterlock
Switch(page30).
8.Installthecentershroud.
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