Toro 74269 - Alternator and Pump Belt Service; Replacing and Tensioning Alternator Belt; Checking and Replacing Pump Drive Belt

Figure69
1.Leftadjustablepulley
4.Rightadjustablepulley
2.Leftspringloadedidler
pulley
5.Rightspringloadedidler
pulley
3.Backofthemachine
CheckingandReplacingthe
PumpDriveBelt
ServiceInterval:Every50hours—Checkthepump
drivebelt.
1.Tilttheseatforwardandremovethefrontengine
panel.
2.Checkthepumpdrivebeltforwear.
3.Toreplacethebelt,pullthespringloadedidlerdown
andremovethetractionbeltfromtheengineand
hydropumppulleys(
Figure70).Removethebelt
betweenthepulleys.
4.Installthenewbeltaroundtheengineandhydro
pumppulleys(
Figure70).
5.Pullthespringloadedidlerdownandalignitbelow
thetractionbelt.Releasethepressureonthespring
loadedidler(Figure70).
Figure70
1.Springloadedidlerpulley
2.Pumpdrivebelt
ReplacingandTensioningthe
AlternatorBelt
ReplacingtheAlternatorBelt
ServiceInterval:Every50hours—Checkthealternator
belt.
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Tilttheseatforwardandremovethefrontengine
panel(
Figure71).
Figure71
1.Frontenginepanel2.Knob
4.Checkthealternatorbeltforwear.
5.Toreplacethealternatorbelt,removethepump
drivebelt.RefertoRemovingthePumpDriveBelt.
6.Loosenthetwoboltsholdingthealternator
(
Figure72).
7.Removethebeltfromthepulleysandalternator
(
Figure72).
8.Installanewbeltaroundthepulleysandthe
alternator(Figure72).
TensioningtheAlternatorBelt
1.Placeahandlebetweenthealternatorandcylinder
block(Figure72).
2.Adjustthealternatortotheoutsideuntilthereis3/8
to1/2inch(10to13mm)deectionsinthebelt
betweentheengineandthealternator(Figure72).
3.Tightenthealternatorbolts.
4.Checkthedeectioninthebeltagainandadjustthe
beltifneeded.
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