I35 V6-3.5L (VQ35DE) (2003)
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Use Genuine RTV silicone sealant or equivalent.
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Install camshaft brackets in their original positions. Align stamp mark as shown in the figure.
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If any part of valve assembly or camshaft is replaced, check valve clearance according to reference data. After completing assembly check
valve clearance.
Reference data valve clearance (Cold):
Intake 0.26 - 0.34 mm (0.010 - 0.013 inch)
Exhaust 0.29 - 0.37 mm (0.011 - 0.015 inch)
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Lubricate threads and seat surfaces of camshaft bracket bolts with new engine oil before installing them.