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TM 10-3930-638-24&P
4-5. AXLE MAINTENANCE (cont)
a. Differential Carrier (cont).
ADJUSTMENTS (cont)
26
(cont)
ALL CONTACT BEARINGS SHOWN BELOW ARE ON RIGHT HAND SPIRAL
RING GEAR THE DRIVE IS ON THE CONVEX SIDE OF THE TOOTH.
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 TO-
WARD 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 DIS-
TANCE 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 DIS-
TANCE 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.
4-246

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