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Valve Stem Oil Seal and Valve Spring Replacement

Special Tools

    • EN-46116 Remover / Installer Stem Seal
    • EN-47632 Cleaning Tool
    • EN-48247 Adaptor - Valve Spring Compression
    • EN-49074 Compressor - Universal Valve Spring
    • EN-50453 Adaptor - Air Compression

For equivalent regional tools refer to Special Tools .

Removal Procedure
  1. Remove the 16 valve rocker arms. Refer to Valve Rocker Arm Replacement .

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  2. Clean the injector sealing surfaces in the cylinder head, using the EN-47632 cleaning tool (1) in following procedure:
    3. • first use the brush side to loosen the dirt.
    • second use the sponge side to remove the dirt.

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  3. Install the EN-50453 adaptor (1) to cylinder 1.
  4. Install the fuel injector bracket (2).

    5. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the fuel injector bracket bolt (3) and tighten the bolt to 20 N·m (15 lb ft).

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  6. Install the EN-49074 compressor (1) with the EN-48247 adaptor (2).

    7. Note: The following step will hold the valve seated and keep it from falling into the cylinder.

  7. Connect the compressed air hose to EN-50453 adaptor .
  8. Subject cylinder 1 with compressed air.

    9. Note: The EN-48247 adaptor must be applied parallel to the valve retainers in order to prevent damage to the tools or the valve train components.

  9. Press down the valve spring and the upper valve spring cap until the valve keys are discharged from spring load. Remove the valve keys.
  10. Remove the valve spring retainer and valve spring.

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  11. Remove the valve stem oil seals . Use the EN-46116 remover / installer (1).

Installation Procedure

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  1. Install the NEW valve stem oil seals. Use the EN-46116 remover / installer (1).
  2. Install the valve spring cap and valve spring.

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    Note: Ensure that the cylinder is subject with compressed air.

  3. Push the EN-49074 compressor (1) with the EN-48247 adaptor slightly down until the valve keys are engaged in evidence.
  4. Disconnect the compressed air hose from EN-50453 adaptor .
  5. Repeat the procedure for cylinder 2, 3 and 4.
  6. Remove the EN-49074 compressor (1) with the EN-48247 adaptor (2).

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  7. Remove fuel injector bracket bolt (3).
  8. Remove the fuel injector bracket (2).
  9. Remove EN-50453 adaptor (1) from cylinder 1.
  10. Install the 16 valve rocker arms. Refer to Valve Rocker Arm Replacement .
   


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