5. Inspection and servicing of basic engine parts
130
5.6.2 Tappets
(1) The tappets are offset to rotate during
operation and thereby prevent uneven
wearing. Check the contact of each tappet
and replace if excessively or unevenly worn.
NOTE:
When removing tappets, be sure to keep them
separate for each cylinder and intake/exhaust valve.
(2) Measure the outer diameter of the tappet,
and replace if worn beyond the limit.
(3) Measuring push rods.
Measure the bend of the push rods.
mm
Standard
Limit
Tappet outside
diameter
20.927-20.960
20.907
Tappet guide
hole inside dia.
(cylinder block)
21.000-21.021
21.041
Oil clearance
0.040-0.094
0.134
mm
Standard
Limit
Push rod bend
Less than 0.03
0.03
Abnormal contact
surface
Normal contact
surface
(Tappet)
(Tappet stem outside diameter measurement)
(Push rod bend)
Thickness gage
Summary of Contents for 3YM30
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