Daewoo ST Series Betriebsanleitung Seite 68

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3) Flatness
Measure the flatness of the intake and exhaust manifold face mounted on the cylinder head
using a straight edge and a feeler gauge.
4) Hydraulic test
Hydraulic test for the cylinder head is same as that for cylinder block.
6.2.3. Valve & valve guide
1) Valve
Clean the valves with clean diesel oil, then inspect them as follows :
Valve stem outer diameter
Measure the valve stem outer diameter
at 3 positions (top, middle, and bottom).
If the amount of wear is beyond the
limit, replace the valve.
Valve seat contacting faces
Check the valve seat contacting face for scratch or wear, and correct the faces with fine
grinding paper as necessary. Replace if severely damaged.
Valve head thickness
Measure the valve head thickness, and
replace the valve if the measured value
is beyond the limit.
- 65 -
Standard Limit
0.05 mm 0.2 mm
EFM2036I
End of stem
EFM2037I
Standard Limit
Intake valve stem
8.95 ~ 8.97 mm 8.93mm
Exhaust valve stem
8.935 ~ 8.955 mm 8.91 mm
Dimension
Description
Standard Limit
Intake valve 2.7 mm 1 mm or less
Exhaust valve 2.2 mm 1 mm or less
Dimension
Description
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