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Home >> BMW >> 1997 >> 850Ci >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Engine - V12 (M73) >> Adjustments >> Timing Chain TENSIONER

Timing Chain TENSIONER

  1. Press tensioning rail once briefly toward chain and measure dimension. Press tensioning rail firmly back against spring force and measure dimension. Subtract first measurement from second measurement. See Fig 1 .
  2. Adjust nominal value .21-.25" (5.5-6.5 mm) with adjusting bolt and tighten lock nut. Install new retaining cap. See Fig 2 .
Fig 1: Chain Tensioner Dimensions
G00054388Courtesy of BMW OF NORTH AMERICA, INC.
Fig 2: Installing New Retaining Cap
G00054389Courtesy of BMW OF NORTH AMERICA, INC.
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