Toro 74312 - Belt Maintenance; Inspecting the Belts; Replacing the PTO Belts

BeltMaintenance
InspectingtheBelts
ServiceInterval:Every40hours
1.Stopthemachineandmovethespeed-control
levertotheNEUTRALposition.
2.DisengagethePTO,engagetheparkingbrake,
shutofftheengine,andwaitforallmovingparts
tostop.
3.TiltthehopperupandcheckthepumpandPTO
drivebeltsforwear,cracking,orcontamination.
Note:Thebeltsarespringtensionedandno
adjustmentisnecessaryunlessyoureplacethe
belts.
ReplacingthePTOBelts
1.Stopthemachineandmovethespeed-control
levertotheNEUTRALposition.
2.DisengagethePTO,engagetheparkingbrake,
shutofftheengine,andwaitforallmovingparts
tostop.
3.Withtheengineoff,engagethePTOlever,then
removethehairpincotterandclevispinatthe
bottomofthePTO-brakeband.
4.Rotatethebrakebandupwardandoutofthe
wayofthebeltskeepingclearofthebeltdrive.
5.DisengagethePTOlever.
6.LoosenbeltguidesAandB(Figure49).
7.Removethebelts.
8.Routethenewbeltsontothepulleysasshown
inFigure49.
g006836
Figure49
1.Idler5.Engine
2.BeltguideB6.BeltguideA
3.PTObelt
7.Blower
4.Jackshaft
9.EngagethePTOlever.
10.Rotatethebrakebanddownintotheoriginal
position.
11.Installtheclevispinandhairpincottertosecure
thebrakeband.
12.EngagethePTOlever.
13.Loosenthejamnutsandadjustthelinkageuntil
thetopoftheidlerarmisalignedwiththebottom
ofthenotchonthetensionarmasshownin
Figure50.
g006837
Figure50
1.Tensionarm
2.Loosenthejamnuts.
3.WhenPTOisengaged,aligntopofidlerarmwithbottomof
notchontensionarm,asshown.
4.Idlerarm
14.TightenthejamnutsanddisengagethePTO
lever.
15.EngagethePTOleverandcheckthealignment.
16.Checkandadjustthebeltguidesasstatedin
AdjustingtheBeltGuides(page48).
47