G35x Sedan AWD V6-3.5L (VQ35HR) (2007)
CAMSHAFT BRACKET INNER DIAMETER
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Tighten camshaft bracket bolt with the specified torque. Refer to "INSTALLATION" for the tightening procedure.
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Measure inner diameter (A) of camshaft bracket with a bore gauge.
CAMSHAFT JOURNAL OIL CLEARANCE
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(Oil clearance) = (Camshaft bracket inner diameter) - (Camshaft journal diameter).
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If the calculated value exceeds the limit, replace either or both camshaft and cylinder head.
NOTE: Camshaft brackets cannot be replaced as single parts, because there are machined together with cylinder head. Replace whole cylinder
head assembly.
Camshaft End Play
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Install a dial indicator in thrust direction on front end of camshaft. Measure the end play of a dial indicator when camshaft is moved
forward/backward (in direction to axis).
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Measure the following parts if out of the limit.
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Dimension "A" for camshaft No. 1 journal
Standard: 27.500 - 27.548 mm (1.0827 - 1.0846 in)
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Dimension "B" for cylinder head No. 1 journal bearing
Standard: 27.360 - 27.385 mm (1.0772 - 1.0781 in)
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Refer to the standards above, and then replace camshaft and/or cylinder head.
Camshaft Sprocket Runout
1. Put V-block on precise flat table, and support No. 2 and 4 journals of camshaft.
CAUTION: Do not support No. 1 journal (on the side of camshaft sprocket) because it has a different diameter from the other three
locations.