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Exhaust Camshaft Replacement

Special Tools

EN-50433 Adaptor - Exhaust Camshaft Sprocket Fixing

For equivalent regional tools, refer to Special Tools .

Removal Procedure

  1. Remove the engine front cover. Refer to Engine Front Cover Replacement .
  2. Remove the camshaft bearing rear cap. Refer to Camshaft Bearing Cap Removal - Rear .

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  4. Set crankshaft 90° beyond TDC of combustion stroke of cylinder 1. The arrows on the camshaft sprockets must match as shown (1).
  5. Fix the exhaust camshaft sprocket with the EN-50433 sprocket fixing (2).

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    Note: Take extreme care to prevent any scratches or damage to the camshaft and the bearing surfaces. Set the camshaft guides aside in order as removed.

    Note: Remove camshaft seat guide cap from cylinder 2 at least.

  7. Remove 4 camshaft seat guide cap retaining bolts (2).
  8. Remove the camshaft seat guide cap (1).
  9. Remove 8 camshaft seat guide cap retaining bolts (3).
  10. Remove 4 camshaft seat guide caps.
  11. Remove the exhaust camshaft (4).

Installation Procedure

  1. Ensure that the crankshaft is 90° beyond TDC of combustion stroke of cylinder 1.

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    Note: Take extreme care to prevent any scratches or damage to the camshaft and the bearing surfaces. Install the camshaft guides in order as removed.

    Note: Clean the contact surfaces from camshaft, camshaft sprocket and camshaft sprocket bolt.

  3. Coat camshaft bearing surfaces with engine oil.
  4. Install the exhaust camshaft (4).
  5. Note: Tighten the camshaft seat guide cap from cylinder 2 at first.

  6. Install 4 camshaft seat guide caps.
  7. Caution: Refer to Fastener Caution in the Preface section.

  8. Install 8 camshaft seat guide cap retaining bolts (3) and tighten to 10 N·m (89 lb in).
  9. Install the camshaft seat guide cap (1).
  10. Install 4 camshaft seat guide cap retaining bolts (2) and tighten to 25 N·m (18 lb ft).

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  12. The arrows on the camshaft sprockets must match as shown (1).
  13. Remove the EN-50433 sprocket fixing (2) from the exhaust camshaft sprocket.

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  15. Rotate the engine 2 revolutions clockwise.
  16. Set crankshaft 90° beyond TDC of combustion stroke of cylinder 1.
  17. • The arrow on the inlet camshaft gear (1) must match with the arrow on the exhaust camshaft gear (2).
    • The notch in the camshaft sprocket (4) must match with mark on the engine block (3)
  18. Install the camshaft bearing rear cap removal. Refer to Camshaft Bearing Cap Installation - Rear .
  19. Remove the engine front cover. Refer to Engine Front Cover Replacement .
   


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