Honda WX15T, Руководство пользователя

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12-4
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CYLINDER HEAD
CYLINDER HEAD/VALVE
INSPECTION
VALVE STEM O.D.
Inspect each valve face for pitting or wear irregularities.
Inspect each valve stem [1] for bending or abnormal
stem wear.
Replace the valve if necessary.
Measure and record each valve stem O.D.
Replace the valves if their O.D. is smaller than the
service limit
(page 12-2) .
VALVE GUIDE I.D.
Measure and record each valve guide I.D.
Replace the cylinder barrel if the measurement exceeds
the service limit.
GUIDE-TO-STEM CLEARANCE
Subtract each valve stem O.D. from the corresponding
guide I.D. to obtain the stem-to-guide clearance.
If the calculated clearance is more than the service limit,
replace the valve and cylinder barrel as a set.
VALVE SPRING FREE LENGTH
Measure the valve spring free length.
If the measured length is less than the service limit,
replace the valve spring.
STANDARD:
IN: 3.970 – 3.985 mm (0.1563 – 0.1569 in)
EX: 3.935 – 3.950 mm (0.1549 – 0.1555 in)
SERVICE LIMIT:
IN: 3.900 mm (0.1535 in)
EX: 3.880 mm (0.1528 in)
[1]
STANDARD: 4.000 – 4.018 mm (0.1575 – 0.1582 in)
SERVICE LIMIT: 4.060 mm (0.1598 in)
STANDARD:
IN: 0.015 – 0.048 mm (0.0006 – 0.0019 in)
EX: 0.050 – 0.083 mm (0.0020 – 0.0033 in)
SERVICE LIMIT:
IN: 0.098 mm (0.0039 in)
EX: 0.120 mm (0.0047 in)
STANDARD: 23.7 mm (0.93 in)
SERVICE LIMIT: 22.8 mm (0.90 in)