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ENGINE - ENGINE MECHANICAL
EG·47
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3.
INSPECT CYLINDER HEAD
A.
Inspect for flatness
Using a precision straight edge and thickness gauge,
measure the surfaces contacting the cylinder block
and the manifolds for warpage.
Maximum warpage:
0.20 mm (O.0079 in.)
Cylinder Block Side
If warpage is greater than maximum. replace the cylin-
der head.
Intake Manifold Side
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Exhaust Manifold Side
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Thread
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B.
Inspect for cracks
Using a dye penetrant. check the intake ports. exhaust
ports and surface contacting the cylinder block.
If cracked. replace the cylinder head.
C.
Inspect cylinder head bolts
Using vernier calipers. measure the
minimum
outer
diameter of the compressed thread at the measuring
point.
Standard outer diameter:
10.800 - 11.000 mm (0.4252 - 0.4331
in.)
Minimum outer diameter:
10.55
mm
(0.4154 in.)
If the outer diameter is less than minimum. replace the
bolt.
4.
CLEAN VALVES
(a)
Using a gasket scraper. chip off any carbon from the
valve head.
(b)
Using a wire brush. thoroughly clean the valve.

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  • Dibakar Kundu Aug 13, 2019 04:39:
    much helf full to us,we hope will get this type of support in future.