Q45 V8-4.5L (VK45DE) (2002)
Valve Spring: Testing and Inspection
Valve Spring - Squareness
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 SPRING SQUARENESS
Set try square along the side of valve spring and rotate the spring. Measure the maximum clearance between the top face of spring and try square.
LIMIT: ...................................................................................................................................................................... Less than 2.2 mm (0.087 inch)