QX56 RWD V8-5.6L (VK56DE) (2006)
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If measurement is not within the specifications, replace the camshaft.
Camshaft Journal Clearance
Camshaft Journal Diameter
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Measure the diameter of the camshaft journal.
Standard diameter: 25.953 - 25.970 mm (1.0218 - 1.0224 inches)
Camshaft Bracket Inner Diameter
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Tighten the camshaft bracket bolt to the specified torque.
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Measure the inner diameter of the camshaft bracket.
Standard: 26.000 - 26.021 mm (1.0236 - 1.0244 inches)
Calculation of Camshaft Journal Clearance
(Journal clearance) = (camshaft bracket inner diameter) - (camshaft journal diameter)
Standard: 0.030 - 0.068 mm (0.0012 - 0.0027 inches)
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If measurement is not within specification, replace either or both camshaft and cylinder head.
NOTE: The inner diameter of the camshaft bracket is manufactured together with the cylinder head. Replace the whole cylinder head as an
assembly
Camshaft End Play
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Install dial gauge in the thrust direction on the front end of the camshaft. Measure the end play when the camshaft is moved forward/backward (in
direction to axis).
Standard: 0.115 - 0.188 mm (0.0045 - 0.0074 inches)
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If measurement is out of the specified range, replace the camshaft and measure again.
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If measurement is still out of the specified range, replace the cylinder head.