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Cylinder Block Inspection

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  1. Measure the distortion of the cylinder block top surface in six directions as indicated in the figure.
    • If it exceeds the maximum, replace the cylinder block.

    Maximum Cylinder Block Distortion 

    1. 0.10 mm {0.004 in} 
      Fig 1: Measuring Cylinder Block Distortion
      G02831602Courtesy of MAZDA MOTORS CORP.

  2. Measure the cylinder bores in X and Y directions at 42 mm {1.65 in}  below the top surface.
    • If not within the specification, replace the cylinder block.

    Standard Diameter Limit 

    1. 87.500-87.530 mm {3.4449-3.4460 in} 

    Minimum/Maximum Bore Diameter Limit 

    1. 87.440-87.590 mm {3.4425-3.4484 in} 
      Fig 2: Measuring Cylinder Bores
      G02831603Courtesy of MAZDA MOTORS CORP.