g226457
Figure252
1.Heel3.T oe
2.Driveside
4.Coastside
Example3:Backlashincorrect.Thinnerpinionpositionshimnecessary.
Adjustbacklashtomatch(Figure252).
GearPatternMovementSummary
1.Decreasingbacklashmovestheringgearclosertothepinion.
Drivepattern(convexsideofgear)moveslowerandtowardthetoe.
Coastpattern(concavesideofgear)movesslightlyhigherandtowardthe
heel.
2.Increasingbacklashmovestheringgearawayfromthepinion.
Drivepattern(convexsideofgear)moveshigherandtowardtheheel.
Coastpattern(concavesideofgear)movesslightlylowerandtowardthetoe.
3.Thickerpinionpositionshimwiththebacklashconstantmovesthepinion
closertotheringgear.
Drivepattern(convexsideofgear)movesdeeperonthetooth(ankcontact)
andslightlytowardthetoe.
Coastpattern(concavesideofgear)movesdeeperonthetoothandtoward
theheel.
4.Thinnerpinionpositionshimwithbacklashconstantmovesthepinionfurther
fromtheringgear.
Drivepattern(convexsideofgear)movestowardthetopofthetooth(face
contact)andtowardtheheel.
Coastpattern(concavesideofgear)movestowardthetopofthetooth(face
contact)andtowardtheheel.
DriveAxles:ServiceandRepairs
Page8–42
Groundsmaster
®
3280-D/3320
05138SLRevB
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