Sienna LE V6-3.0L (1MZ-FE) (1998)
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Using Special Service Tool (SST) (A), press down the valve lifter and place SST (B) between the camshaft and valve lifter. Remove SST
(A).
SST 09248-55040 (09248-0541O, 09248-05420)
HINT:
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Apply SST (B) at a slight angle on the side marked with "9" or "7", at the position shown in the illustration.
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When SST (B) is inserted too deeply, it will get pinched by the shim. To prevent it from being stuck, insert it gently from the intake
side, at a slight angle.
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Using a small screwdriver and magnetic finger, remove the adjusting shim.
b. Determine the replacement adjusting shim size according to these Formula or Charts:
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Using a micrometer, measure the thickness of the removed shim.
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Calculate the thickness of a new shim so the valve clearance comes within the specified value.
T-Thickness of used shim
A-Measured valve clearance
N-Thickness of new shim
Intake: N = T + (A - 0.20 mm (0.008 inch))
Exhaust: N = T + (A - 0.30 mm (0.012 inch))
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Select a new shim with a thickness as close as possible to the calculated values.