Toyota 3S-GE Repair Manual page 105

EG-91
ENGINE — ENGINE MECHANICAL
D. Clean cylinder head
Using a soft brush and solvent, thoroughly clean the
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as 3. INSPECT CYLINDER HEAD
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W A. Inspect for flatness
1* Using a precision straight edge and feeler gauge, mea-
)\\,,fj(),,&'-*1' , ' Q sure the surfaces contacting the cylinder block and
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Z ')5 3 U"? the manifolds for warpage.
// (iQ<\Q\,/AU \ Maximum warpage: A
Cylinder Block Side Cvlinder block side
Exhaust manifold side
O ; 0.20 mm (o.oo1e in.)
If' 1' Intake manifold side
_€3 0.20 mm (o.oo7e in.)
Intake Manifold Side 0'30 mm (Q0118 in')
i " If warpage is greater than maximum, replace the cylin-
L i p der head.
aust Manifold Side
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Using a dye penetrant, check the combustion cham-
M ber, intake ports, exhaust ports and cylinder block
V surface for cracks.
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If cracked, replace the cylinder head.
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A 4 CLEAN VALVES
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C i i (a) Using a gasket scraper, chip off any carbon from the
'7" 'O. valve head.
J \ (b) Using a wire brush, thoroughly clean the valve.
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