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NOTE: If the valves, springs, or seals are to be INSTALLATION The engine cylinder head gasket is a composition gasket. The gasket is to be installed DRY. DO NOT If the engine cylinder head is to be replaced and the original valves used, measure the valve stem to accommodate oversize valve stems. Remove all carbon buildup and reface the valves. (1) Remove the shop towels from the cylinder bores. Coat the bores with clean engine oil. (2) Position the engine cylinder head gasket (with the numbers facing up) using the alignment dowels CAUTION: Engine cylinder head bolts should be (3) With bolt No.14 held in place (tape around bolt), install the engine cylinder head over the same (4) Coat the threads of stud bolt No.11 with Loc- tite 592 sealant, or equivalent. (5) Tighten the engine cylinder head bolts in sequence according to the following procedure (Fig. CAUTION: During the final tightening sequence, (a) Tighten all bolts in sequence (1 through 14) to 30 N·m (22 ft. lbs.) torque. (b) Tighten all bolts in sequence (1 through 14) to 61 N·m (45 ft. lbs.) torque. (c) Check all bolts to verify they are set to 61 N·m (45 ft. lbs.) torque. (d) Tighten bolts in sequence: • Bolts 1 through 10 to 149 N·m (110 ft. lbs.) torque. • Bolt 11 to 135 N·m (100 ft. lbs.) torque. • Bolts 12 through 14 to 149 N·m (110 ft. lbs.) torque. (e) Check all bolts in sequence to verify the cor- rect torque. (f) If not already done, clean and mark each bolt with a dab of paint after tightening. Should you (6) Install the spark plugs and tighten to 37 N·m (27 ft. lbs.) torque. (7) Connect the temperature sending unit wire connector. (8) Install the ignition coil rail and coil rail electri- cal connectors. Fig. 52 Engine Cylinder Head Assembly 1 – CYLINDER HEAD BOLTS CYLINDER HEAD BOLTS POSITION DESCRIPTION 1,4,5,12,13 1/2 in.-13 BOLT 8,9 1/2 in.-13 BOLT WITH DOWEL 2,3,6,7,10,11,14 1/2 in.-13 WITH 7/16 in.-14 STUD All bolts are 12 point drives for rocker cover clearance Fig. 53 Engine Cylinder Head Bolt Tightening Sequence 9 - 38 4.0L ENGINE WJ REMOVAL AND INSTALLATION (Continued) |