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CHEMICAL TEST METHOD Combustion leaks into the cooling system can also be checked by using Bloc-Chek Kit C-3685-A or REMOVAL - CYLINDER HEAD (1) Drain the cooling system. (Refer to 7 - COOL- ING - STANDARD PROCEDURE) (2) Disconnect negative cable from battery. (Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANI- WARNING: INTAKE MANIFOLD GASKET IS MADE (4) Remove the cylinder head covers. (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - REMOVAL) (5) Remove the spark plugs from cylinder head. (7) Remove exhaust manifold(s). (Refer to 9 - ENGINE/MANIFOLDS/EXHAUST MANIFOLD - REMOVAL) (8) Remove rocker arm and shaft assemblies. (Refer to 9 - ENGINE/CYLINDER HEAD/ROCKER positions to ensure installation in original loca- (9) Remove the eight head bolts from each cylinder head and remove cylinder heads (Fig. 22). CLEANING To ensure engine gasket sealing, proper surface preparation must be performed, especially with the NOTE: Multi-Layer Steel (MLS) head gaskets require Remove all gasket material from cylinder head and block (Refer to 9 - ENGINE - STANDARD PROCE- Clean all engine oil passages. INSPECTION (1) Before cleaning, check for leaks, damage and cracks. (2) Clean cylinder head and oil passages. inch.) • Service Limit = 0.2 mm (0.008 inch.) • Grinding Limit = Maximum of 0.2 mm (0.008 inch.) is permitted. CAUTION: 0.20 mm (0.008 in.) MAX is a combined Fig. 18 DIPSTICK & TUBE 1 - DIPSTICK Fig. 19 Checking Cylinder Head Flatness—Typical RS ENGINE 3.3/3.8L 9 - 105 CYLINDER HEAD (Continued) |