G35 Sedan 2WD V6-3.5L (VQ35DE) (2005)
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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 inch)
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Dimension "B" for cylinder head No.1 journal
Standard: 27.360 - 27.385 mm (1.0772 - 1.0781 inch)
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Refer to the standards, and then replace camshaft and/or cylinder head.
Camshaft Sprocket Runout
1. Put V-block on precise flat table, and support No. 2 and No. 4 journal of camshaft.
CAUTION: Do not support journal No.1 (on the side of camshaft sprocket) because it has a different diameter from the other three locations.
2. Measure the camshaft sprocket runout with dial indicator. (Total indicator reading)
Limit: 0.15 mm (0.0059 inch)
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If it exceeds the limit, replace camshaft sprocket.
Valve Lifter
Check if surface of valve lifter has any wear or cracks.
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If anything is found, replace valve lifter.
Valve Lifter Clearance
VALVE LIFTER OUTER DIAMETER
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Measure the outer diameter of valve lifter with micrometer.
Standard (Intake and exhaust): 33.977 - 33.987 mm (1.3377 - 1.3381 inch)