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Engine Block Cleaning and Inspection

Special Tools

EN-8087 Gauge

For equivalent regional tools, refer to Special Tools .

Cleaning Procedure
  1. Remove any old thread sealant, gasket material or sealant.
  2. Clean all the following areas with solvent:
    3. • Sealing surfaces
    • Cooling passages
    • Oil passages
    • Bearing journals
  3. Clean all threaded and through holes with solvent.

    4. Warning: Refer to Safety Glasses and Compressed Air Warning in the Preface section.

  4. Dry the engine block with compressed air.

Visual Inspection
  1. Inspect the crankshaft bearings journals for damage or spun bearings. The crankshaft bearing journals are not repairable, if the crankshaft bearing journals are damaged the engine block assembly must be replaced.
  2. Inspect all sealing and mating surfaces for damage, repair or replace the engine block assembly if necessary.
  3. Inspect all threaded and through holes for damage or excessive debris.
  4. Inspect all bolts for damage, if damaged replace with NEW bolts only.
  5. Inspect the cylinder walls for cracks or damage. The cylinder sleeves must not be serviced separately, if the cylinders are damaged the cylinder block assembly must be replaced.
  6. Inspect the engine block for cracks. DO NOT repair any cracks. If cracks are found, the cylinder block assembly must be replaced.

Measuring Procedure

Engine Block Flatness Inspection


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  1. Inspect the engine block as shown for distortion. Use a straight edge (1) and a feeler gauge.

    2. 2189636
  2. Inspect the engine block as shown for deflection. Use a straight edge (1) and a feeler gauge.
  3. If the deflection is less than 0.06 mm (0.0024 in), engine block replacement is not necessary.
  4. If the deflection is larger than 0.06 mm (0.0024 in), replace the engine block.

Cylinder Sleeve Diameter Inspection


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  1. Inspect the cylinder bores using the EN-8087 gauge (1). Inspect for the following items:
    2. • Wear of cylinder sleeve
    • Cylinder sleeve diameter
    • Tapering of cylinder sleeve
    • Oval status of cylinder sleeve
  2. Measure the cylinder bore diameter 86 mm (3,39 in) from the deck face using a dial gauge.

Refer to Engine Mechanical Specifications for the correct specifications.

   


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