Page 31 - E BOOK ENGINE MECHANICAL M2

5. SERVICE POINTS OF 4B1 ENGINE COMPONENT

6. Using a micrometer, measure the thickness of the
removed valve tappet.

Fig. 5-11

7. Calculate the thickness of the newly installed valve
tappet using the following equation.

A: thickness of the newly installed valve tappet
B: thickness of the removed valve tappet
C: measured valve clearance

Equation:
Intake valve: A = B + (C - 0.20 mm)
Exhaust valve: A = B + (C - 0.30 mm)

Fig. 5-12

The valve tappet ranges 3,000 - 3,690 mm and there are 47 types found in increments of
Note 0.015 mm. The thickness below a decimal point is stamped on the reverse side of the valve
tappet.

5 - 4 Pub. No. PTAE1225