Yanmar 6LPA-STP2 Service Manual page 109

Cylinder Head
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Figure 5-44
Figure 5-44
3. Measure the diameter of the camshaft journal
using a micrometer (Figure 5-45).
Journal diameter:
• No. 1: 34.969 to 34.985 mm
(1.3767 to 1.3773 in.)
• Others: 27.986 to 27.998 mm
(1.1018 to 1.1022 in.)
If the journal diameter is not within the
specifications, check the oil clearance as shown
in step 5.
Figure 5-45
Figure 5-45
4. Check the camshaft bearings for flaking
(peeling) or scoring (scratches) (Figure 5-46). If
the bearing is damaged, replace the bearing
cap and cylinder head at the same time.
6LPA Service Manual
Figure 5-46
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5. Inspect the oil clearance of the camshaft
journal.
(a) Remove the 7 bearing caps from the
(b) Clean the bearing caps and camshaft
(c) Install the camshaft to the cylinder head.
(d) Insert plastigage (Figure 5-47, (1)) strips
Figure 5-47
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© 2007 Yanmar Marine International
Figure 5-46
camshaft or valve rocker shaft.
journals.
across the camshaft journals.
(1)
Figure 5-47
ENGINE
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