Tappet Inspection

TAPPET INSPECTION





1. Measure the diameter of each tappet bore using the caliper gauge. Measurement positions total four and are in the X and Y directions, at two points (A and B) as shown in the figure.

Standard tappet bore diameter
31.000-31.030 mm (1.2205-1.2216 in)





2. Measure the tappet body outer diameter of each valve using the micrometer. Measurement positions total four and are in the X and Y directions, at two points (A and B) as shown in the figure.

Standard tappet body outer diameter
30.970-30.980 mm (1.2193-1.2196 in)

3. Calculate the clearance between the tappet and the related tappet bore by subtracting the outer diameter of the tappet from the inner diameter of the tappet bore.
^ If it exceeds the maximum specification, replace the tappet or cylinder head.

Clearance between tappet and tappet bore
Standard
0.02-0.06 mm (0.0008-0.0023 in)
Maximum
0.15 mm (0.006 in)