TM 9-2320-365-34-2NOTEInjector sleeves should be replaced whenrepairing cylinder heads with high hours.(10) Inspect six injector sleeves (8) for damage, corrosion,cracks, or pitting.(11) Measure cylinder head flatness, using a straight edgeand feeler gage. Refer to Table 20-4 Cylinder HeadSurface Flatness.NOTEAlways check the thickness of a cylinder headbefore resurfacing. Cylinder head may havebeen previously resurfaced and may not haveenough stock to be resurfaced again.(12 Measure the cylinder head (9) for thickness dimension(A), and compare the dimensions to Table 20-3 (ValveSeat Insert Specifications). A maximum stock removalof 0.010 in. (0.025 cm) is permissible when resurfacingthe head or a minimum head thickness of 4.037 in.(10.25 cm).Table 20-4. Cylinder Head Surface Flatness.Overall0.006 in. (0.015 cm)For Any Span0.002 in. (0.005 cm)5.91 in. (15.01 cm)20-15
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