Toro Groundsmaster 3320-D - Pinion Gear to Ring Gear Engagement (4-Wheel Drive Axle)

PinionGeartoRingGearEngagement(4-WheelDriveAxle)
Thenalpositionofthepiniongearisveriedbyusingthegearcontactpattern
methodasdescribedinthefollowingprocedure.
g226500
Figure282
1.T opland3.T oe5.Heel
2.Prole
4.Lengthwisebearingarc6.Root
Geartoothdenitions(Figure282):
•Toe-theportionofthetoothsurfaceattheendtowardthecenter.
•Heel-theportionofthegeartoothattheouterend.
•TopLand-topsurfaceoftooth.
1.Painttheteethoftheringgear,bothdriveandcoastside,withagearmarking
compound,suchasDyKemsteelblue.
2.Installtheinputshaft/piniongearassemblyintotheaxlecase.
3.Whileapplyingalightloadtotheringgear,rotatethepiniongearinthe
directionofforwardtraveluntiltheringgearhasmade1completerevolution.
g226501
Figure283
1.Morethan35%totaltoothcontact
Idealtoothcontactobservedontheringgearshouldcovermorethan35%of
eachtoothsurface.Thecontactareashouldbeinthecenterofeachtooth
andextend1/3to1/2wayacrosseachtoothfromthetoeend(Figure283).
DriveAxles:ServiceandRepairs
Page8–70
Groundsmaster
®
3280-D/3320
05138SLRevB