Valve Guide Replacement

When valve guide is removed, replace with oversized [0.2 mm (0.008 in)] valve guide.

1. To remove valve guide, heat cylinder head to 110° to 130°C (230° to 266°F) by soaking in heated oil.

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2. Drive out valve guide with a press [under a 20 kN (2 ton, 2.2 US ton, 2.0 Imp ton) pressure] or hammer and suitable tool.

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   WARNING: Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.
3. Ream cylinder head valve guide hole using suitable tool.

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   Valve guide hole diameter (for service parts):

   Intake and exhaust

   : 10.175 - 10.196 mm (0.4006 - 0.4014 in)

4. Heat cylinder head to 110° to 130°C (230° to 266°F) by soaking in heated oil.

   Courtesy of NISSAN NORTH AMERICA, INC.

5. Press valve guide from camshaft side to the dimensions as shown below, using suitable tool.

   Courtesy of NISSAN NORTH AMERICA, INC.

   Projection (L)

   Intake and exhaust

   : 12.6 - 12.8 mm (0.496 - 0.504 in)

   WARNING: Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.
6. Apply reamer finish to valve guide using suitable tool.

   Courtesy of NISSAN NORTH AMERICA, INC.

   Standard:

   Intake and exhaust

   : 6.000 - 6.018 mm (0.2362 - 0.2369 in)