Toro 74268CP - Checking and Replacing the Pump Drive Belt; Replacing and Tensioning the Alternator Belt

Figure64
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(Figure65).Removethebelt
betweenthepulleys.
4.Installthenewbeltaroundtheengineandhydro
pumppulleys(Figure65).
5.Pullthespringloadedidlerdownandalignitbelow
thetractionbelt.Releasethepressureonthespring
loadedidler(Figure65).
Figure65
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(Figure66).
Figure66
1.Frontenginepanel2.Knob
4.Checkthealternatorbeltforwear.
5.Toreplacethealternatorbelt,removethepump
drivebelt.RefertoRemovingthePumpDriveBelt.
6.Loosenthetwoboltsholdingthealternator
(Figure67).
7.Removethebeltfromthepulleysandalternator
(Figure67).
8.Installanewbeltaroundthepulleysandthe
alternator(Figure67).
TensioningtheAlternatorBelt
1.Placeahandlebetweenthealternatorandcylinder
block(Figure67).
2.Adjustthealternatortotheoutsideuntilthereis3/8
to1/2inch(10to13mm)deectionsinthebelt
betweentheengineandthealternator(Figure67).
3.Tightenthealternatorbolts.
4.Checkthedeectioninthebeltagainandadjustthe
beltifneeded.
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