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INSTALLATION (1) Clean cylinder head and cover mating surfaces. Inspect and replace gasket and seals as necessary (2) To replace spark plug tube seals: facing cylinder head cover. c. Install seals with Special Tool MB-998306 (Fig. 36). (3) Install cylinder head cover bolts and tighten to 12 N·m (105 in. lbs.) (Fig. 34). (4) Install ignition coils and connect all electrical connectors. (5) Install upper intake plenum and air cleaner assembly. SPARK PLUG TUBES REMOVAL (1) Remove cylinder head cover. Refer to procedure outlined in this section. (2) Using locking pliers remove the tube from the cylinder head (Fig. 37). Discard old tube. (3) Clean area around spark plug with Mopar t Parts Cleaner or equivalent. INSTALLATION (1) Apply Mopar t Stud and Bearing Mount to a new tube approximately 1 mm (0.039 in.) from the (2) Install sealer end of tube into the cylinder head. Then carefully install the tube using a hard- (3) Install cylinder head cover. Refer to procedure outlined in this section. CYLINDER HEAD REMOVAL (1) Drain cooling system. Refer to Group 7, Cooling System for procedure. (2) Remove crankshaft damper. Sprocket and Engine Timing Procedure in this sec- (5) Remove intake manifold assembly. Refer to Group 11, Intake and Exhaust Manifolds, for procedure. Fig. 36 Spark Plug Tube Seal Installation Fig. 37 Servicing Spark Plug Tubes Cylinder Head, Camshaft, and Rocker Arms 300M 3.5L ENGINE 9 - 31 REMOVAL AND INSTALLATION (Continued) |