Sienna FWD V6-3.3L (3MZ-FE) (2006)
e) Using a micrometer, measure the thickness of the removed shim.
f) Calculate the thickness of a new shim so the valve clearance comes within the specified value.
Specified value (Cold):
Intake A = B + (C - 0.20 mm (0.008 inch))
Exhaust A = B + (C - 0.30 mm (0.012 inch))
g) Select a new shim with a thickness as close as possible to the calculated values.
EXAMPLE (intake):
Measure valve clearance = 0.45 mm (0.0177 inch) 0.45 mm (0.0177 inch) - 0.20 mm (0.0078 inch) 0.25 mm (0.0098 inch)
(Measured - Specification Excess clearance) Used shim measurement 2.80 mm (0.1102 inch) 0.25 mm (0.0098 inch) + 2.80 mm (0.1102
inch) 3.05 mm (0.1201 inch)
(Excess clearance + Used shim = Ideal new shim) Closest new shim = 3.05 mm (0.1201 inch) Shim No. "12"