Differential Assembly: Adjustments

Contact Pattern

The ideal tooth bearing impression on the drive and coast sides of the gear teeth is evenly distributed over the working depth of the tooth profile and is located nearer to the toe (small end) than the heel (large end). This type of contact permits the tooth bearing to spread towards the heel under operating conditions when allowance must be made for deflection.





Note: It is important to remember, when making an adjustment to correct a heel contact, that sufficient backlash for satisfactory operation must be maintained. If there is insufficient backlash the gears will be noisy and have a greatly reduced life. Scoring ofthe tooth profile and breakage may result. Always maintain a minimum backlash of O.13 mm (O.OO5 in.).