Ref.: RX182/006
Version 01/2017 - English
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7.5 Tooth contact pattern check
Checking the tooth contact pattern by bluing the pinion teeth
We strongly recommend doing this check. When the rack and the pinion are meshing correctly, the blue
colour covers 70 to 80% of the contact surface. The following pictures show the typical mesh errors.
Wrong parallelism
tolerances
Wrong parallelism
tolerances
The adjustment plate
is too thick
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