SPIRAL BEVEL AND HYPOID TOOTH BEARING CONTACT CHART
CONDITION 1
TYPICAL PREFERRED BEARING ON BOTH SIDES OF TOOTH
WHILE UNDER A LIGHT LOAD
CONDITION 2
TOE BEARING ON BOTH SIDES OF TOOTH-GEAR SET
NOISY. TO MOVE BEARING TOWARD HEEL INCREASE
BACKLASH WITHIN LIMITS BY MOVING GEAR AWAY FROM
PINION.
CONDITION 3
HEEL BEARING ON BOTH SIDES OF TOOTH- GEAR SET
NOISY AND COULD RESULT IN EARLY GEAR FAILURE. TO
MOVE BEARING TOWARD TOE DECREASE BACKLASH
WITHIN LIMITS BY MOVING GEAR TOWARD PINION.
CONDITION 4
LOW BEARING ON GEAR AND HIGH BEARING ON PINION.
CORRECT BY PULLING PINION AWAY FROM GEAR.
INCREASE MOUNTING DISTANCE BY ADDING SHIMS
BETWEEN BEARING CAGE AND DIFFERENTIAL HOUSING.
CONDITION 5
HIGH BEARING ON GEAR AND LOW BEARING ON PINION.
CORRECT BY MOVING PINION IN TOWARD GEAR.
DECREASE MOUNTING DISTANCE BY REMOVING SHIMS
FROM BETWEEN BEARING CAGE AND DIFFERENTIAL
HOUSING.
BACKLASH
BACKLASH SHOULD BE MEASURED WITH A DIAL
INDICATOR RIGIDLY MOUNTED WITH THE STEM
PERPENDICULAR TO THE TOOTH SURFACE AT THE
EXTREME HEEL.
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