Maxima GXE V6-3.0L (VQ30DE) (1999)
6. Blow air into the hole to separate adjusting shim from valve lifter.
7. Remove adjusting shim using a small screwdriver and a magnetic finger.
8. Determine replacement adjusting shim size following formula.
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Using a micrometer determine thickness of removed shim.
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Calculate thickness of new adjusting shim so valve clearance comes within specified values.
R = Thickness of removed shim
N = Thickness of new shim
M = Measured valve clearance
Intake: N = R + [M - 0.30 mm (0.0118 inch)]
Exhaust: N = R + [M - 0.33 mm (0.0130 inch)]
Shims are available in 64 sizes from 2.32 mm (0.0913 inch) to 2.95 mm (0.1161 inch), in steps of 0.01 mm (0.0004 inch).