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Home >> BMW >> 1982 >> 733i Standard Trans >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Differentials & Drive Axles >> Drive Axles - BMW - Integral Carrier >> Overhaul >> Drive Pinion Bearing Preload >> Ring Gear-to-Drive Pinion Backlash

Ring Gear-to-Drive Pinion Backlash

  1. Heat ring gear to 176-212°F (80-100°C) and install on differential case. Using new locking bolts, install bolts with Loctite. Tighten bolts to specification using a criss-cross pattern.
  2. Install multi-tab pulse ring. Place differential assembly in housing. Install shims equally under drive flange bearing caps and install bearing caps. Tighten bearing caps to specification. Install drive flanges.
  3. Mount dial indicator on housing. Zero dial indicator. Measure backlash at various points on ring gear. Move shims from side-to-side (from under bearing caps) until correct backlash is obtained. See Fig 1.
    Fig 1: Checking Ring Gear-to-Drive Pinion Backlash
    G09345439Courtesy of BMW OF NORTH AMERICA, INC.

    Measure backlash at various points on ring gear. 

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