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Gear Tooth Contact Pattern

WARNING: This page is about a different car, the 1991 Ford Aerostar. However, it is still accessible from the selected car via links, so may be relevant.
  1. Paint ring gear teeth with marking compound. Wrap cloth or rope around drive pinion flange to act as brake. Rotate gear until clear contact pattern is obtained. See GEAR TOOTH CONTACT PATTERNS article in this section.
  2. Contact pattern will indicate whether correct pinion bearing mounting shim has been installed and if drive gear backlash has been set properly. Backlash between drive gear pinion must be maintained within specified limits until correct tooth pattern is obtained.
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