Valve Clearance: Adjustments

ADJUSTMENT
^ Perform adjustment depending on selected head thickness of valve lifter.
1. Remove camshaft.
2. Remove valve lifters at the locations that are out of the standard.





3. Measure the center thickness of the removed valve lifters with a micrometer (A).
4. Use the equation below to calculate valve lifter thickness for replacement.
Valve lifter thickness calculation: t = t1 + (C1 - C2)
t = Valve lifter thickness to be replaced
t1 = Removed valve lifter thickness
C1 = Measured valve clearance
C2 = Standard valve clearance:
Intake: 0.30 mm (0.012 in)
Exhaust: 0.33 mm (0.013 in)





^ Thickness of new valve lifter (B) can be identified by stamp mark (A) on the reverse side (inside the cylinder).
Stamp mark "302" indicates 3.02 mm (0.1189 in) in thickness.

NOTE:
Available thickness of valve lifter: 26 sizes range 3.00 to 3.50 mm (0.1181 to 0.1378 in) in steps of 0.02 mm (0.0008 in) (when manufactured at factory).

5. Install the selected valve lifter.
6. Install camshaft.
7. Install timing chain and related parts.
8. Manually rotate crankshaft pulley a few rotations.
9. Make sure that the valve clearances are within the standard.
10. Installation of the remaining components is in the reverse order of removal.