Supra L6-2997cc 3.0L DOHC MFI (1998)
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When the adjusting shim of the No.1 intake side replace, remove the No.2 or No.3 camshaft bearing cap, and insert SST as shown in the
illustration.
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Using a small screwdriver and a magnetic finger, remove the adjusting shim.
b. Determine the replacement adjusting shim size according to the following 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 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.
HINT: Shims are available in 17 sizes in increments of 0.050 mm (0.0020 inch), from 2.500 mm (0.0984 inch) to 3.300 mm (0.1299
inch).
c. Install a new adjusting shim.
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Place a new adjusting shim on the valve lifter, with imprinted numbers facing down.
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Press down the valve lifter with SST (A), and remove SST (B).