Toro 29521 - Belt Maintenance; Checking the Condition and Tension of the Belts; Adjusting the Auxiliary Pump-Drive Belt; Replacing the Transmission-Drive Belt

BeltMaintenance
CheckingtheCondition
andTensionoftheBelts
ServiceInterval:Every50hours
1.Shutofftheengine,engagetheparkingbrake,
removethekey,andwaitforallmovingpartsto
stopbeforeleavingtheoperatingposition.
2.Raisethemachineandsupportitwithjack
standswitha460kg(1,015lb)capacity.
3.Checktheauxiliarypump-drivebeltcondition
andtension(Figure56).
Note:Thebeltshoulddeect1.3cm(1/2inch)
when1.4kg(3lb)offorceisappliedtothebelt
midwaybetweentheauxiliarypumpandengine
pulleys.Ifthebelttensionistoohighortoolow,
refertoAdjustingtheAuxiliaryPump-DriveBelt
(page49).
4.Checkconditionofthetransmission-drivebelt
(Figure56).
Note:Thetransmissionbelthasan
automatic-springtensioner.
g025994
Figure56
1.Transmission-drivebelt2.Auxiliarypump-drivebelt
AdjustingtheAuxiliary
Pump-DriveBelt
1.Shutofftheengine,engagetheparkingbrake,
removethekey,andwaitforallmovingpartsto
stopbeforeleavingtheoperatingposition.
2.Loosenthelocknut(3/8inch)thatsecuresthe
auxiliarypump-idlerpulleytothechassisofthe
machine.
g025997
Figure57
1.Auxiliarypump
4.Adjustmentslot(chassis)
2.Auxiliarypump-idlerpulley5.Auxiliarypump-drivebelt
3.Locknut(3/8inch)
3.Adjustthebelttensionasfollows:
•Movetheauxiliarypump-idlerpulley
rearwardandoutwardtotightenthebelt.
•Movetheauxiliarypump-idlerpulleyforward
andinwardtoloosenthebelt.
Note:Thebeltshoulddeect1.3cm(1/2inch)
when1.4kg(3lb)offorceisappliedtothebelt
midwaybetweentheauxiliarypumpandengine
pulleys.
4.Tightenlocknutto37to45N∙m(27to33ft-lb).
Replacingthe
Transmission-DriveBelt
Note:Noadjustmentsarerequiredforbelttension.
1.Shutofftheengine,engagetheparkingbrake,
removethekey,andwaitforallmovingpartsto
stopbeforeleavingtheoperatingposition.
2.Insertabreakerbarintothesocketofthe
belt-tensionbracketandmovethebracket
outwardandforward(Figure58).
49