Toro 30308 - Page 374

AssemblingtheFrontAxle(continued)
B.Whenyouinstallnewringandpiniongears(suppliedinmatchedsets
only)ensurethatthenumbersetchedonboththepinionandringgear
match(Figure232).
Comparethe+,-,or0markingsoftheoldandnewpinions.Adjustthe
thicknessofanewshimpacktocompensateforthedifferenceinthese
2numbers.
Forexample:Iftheoldpinionreads+2andthenewpinionreads-2,add
0.004inchofbearingshimstotheoriginalshimpackthickness.
Note:Thefollowinginformationisprovidedtohelpyouunderstandthe
adjustmentrequiredforproperengagementofnewringandpiniongears.
Toensureproperengagement,anadditionalnumberisetchedintothe
buttonendofeachpiniongear.Thisnumberindicatesmodications
thatmustbemadetothepiniontoringgeardistanceforeachparticular
gearset.Thisdistanceiscontrolledbyaddingorremovingshimsbehind
theinnerbearingcup.
Apiniongearetched0isconsideredstandard,andhasa1.210inches
piniontoringgeardistance.
Apiniongearetched+3requiresapiniontoringgeardistanceof1.213
inches(+0.003inchfromstandard).Removing0.003inchofbearing
shimsmovesthepiniongearawayfromtheringgear,increasingthe
piniontoringgeardistance.
Apiniongearetched-3requiresapiniontoringgeardistanceof1.207
inches(-0.003inchfromstandard).Adding0.003inchofbearingshims
movesthepiniongearclosertotheringgear,decreasingthepinionto
ringgeardistance.
g225923
Figure233
5.Installthecorrectbearingshimsandanewinnerbearingcupusingapress
plateofproperdiameter.Pushthebearingintothehousinguntilitbottoms
outagainsttheshims(Figure233).
Note:Pinionbearingshimsareavailablein0.08mm(0.003inch),0.13mm
(0.005inch),0.25mm(0.010inch),and0.76mm(0.030inch)thickness.
DriveAxles:ServiceandRepairs
Page8–32
Groundsmaster
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3280-D/3320
05138SLRevB