ENGINEDISASSEMBLY AND ASSEMBLY8.9.10.CYLINDER HEADUse tooling (D) to remove the valve guidesfrom the cylinder head.Use tooling (E) to remove the valve seat insertsfrom the cylinder head.Clean and remove any rough places (burrs)from the valve seat bores.ASSEMBLE CYLINDER HEADTools NeededA B C D E9S3080Valve SeatInsert Group17S8859Guide Driver17 S 8 8 5 8 B u s h i n g5S1330 Valve SpringCompressor115S1322 Lock Inserter18S2252 Carbon Seal Tool*1*The 8S2252 Carbon Seal Tool must have a modifi-cation made to it before it can be used with the8N7002 Fuel Injection Nozzle.1. Lower the temperature of (freeze) the newvalve seat inserts. Use tooling (A) to install thenew valve seat inserts. Do not increase the dia-meter of the extractor in the valve seat insertwhen the insert is installed in the cylinder head.2. Put clean oil on the outside diameter of thevalve guides. Use tooling (B) to install valveguides (1) in the cylinder head. Tooling(B) willinstall the valve guides so dimension “X” willbe correct. Dimension “X” must be 22.23 ±0.25 mm (.875 ± .010 in.). The minimum in-side diameter of the valve guides after installa-tion must be 9.456 mm (.3723 in.). Clean thevalve guides after installation.3. Grind the valve seat inserts according to speci-fications given in SPECIFICATIONS section.TM 5-3805-263-14&P-21-175
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