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Home >> Chevrolet >> 2023 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Mechanical - 3.0L (Lm2) Diesel - Repair Instructions (4 Of 11)) >> Repair Instructions >> Cylinder Head Overhaul >> Assemble Procedure

Assemble Procedure

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  1. GM5236359Courtesy of GENERAL MOTORS COMPANY

    Assemble the EN-50717  Valve Spring Compressor components (1) with the EN-50717 - 20  Valve Spring Compressor Adapter Set (2).

  2. Install the assembled EN-50717  Valve Spring Compressor components on the cylinder head.
  3. GM5236363Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Do not damage the valve guide. Remove any burrs that have formed at the key groove by chamfering the valve stem with an oil stone or a file.

    Intake Valve (2) - Install

  4. Using EN-840  Pliers/Remover, install a NEW valve stem oil seal (1).
  5. GM5236362Courtesy of GENERAL MOTORS COMPANY

    Valve Spring (3) - Install

  6. Valve Spring Retainer (2) - Install
    7. WARNING:

    Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.

    NOTE:

    Components MUST be separated, marked, or organized in a way to ensure the installation to their original location and position. Take precautions in order to prevent interchanging of parts.

  7. Using the EN-50717  Valve Spring Compressor (1), compress the valve spring.
  8. Valve Stem Key (4) - Install [2x]
  9. Slowly release the EN-50717  Valve Spring Compressor from the valve spring assembly.
  10. Repeat the procedure for the remaining intake valves and exhaust valves.
  11. Remove the EN-50717  Valve Spring Compressor components.
  12. GM5149294Courtesy of GENERAL MOTORS COMPANY

    Camshaft Position Sensor Seal (3) - Install NEW

  13. Camshaft Position Sensor (4) - Install
    14. CAUTION:

    Refer to Fastener Caution .

  14. Camshaft Position Sensor Bolt (5) - Install and tighten - Fastener Specifications
  15. Cylinder Head Core Hole Plug (2) - Install [2x]
  16. Engine Lift Bracket Retainer (6) - Install
  17. Camshaft Housing Cover Locating Pin (1) - Install
  18. GM5149287Courtesy of GENERAL MOTORS COMPANY

    Cylinder Head Temperature Sensor (2) - Install and tighten - Fastener Specifications

  19. Engine Lift Bracket Retainer (3) - Install
  20. Camshaft Housing Cover Locating Pin (1) - Install
  21. GM5227671Courtesy of GENERAL MOTORS COMPANY

    Fuel Injection Fuel Rail Stud (1) - Install and tighten [3x] - Fastener Specifications

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