Q45 V8-4.5L (VK45DE) (2002)
Valve Guide: Service and Repair
CAUTION: When installing camshafts, chain tensioners, oil seals, or other sliding parts, lubricate contacting surface with new engine oil.
Apply new engine oil to threads and seat surface when installing cylinder head, camshaft sprocket, crankshaft pulley, and camshaft bracket.
Attach tags to valve lifters so as not to mix them up.
CYLINDER HEAD ASSEMBLY
VALVE GUIDE REPLACEMENT
When valve guide is removed, replace with oversized (0.2 mm, 0.008 inch) valve guide.
1. To remove valve guide, heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in heated oil.