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(3) Fill the oil pan with oil to the specified level. VALVE TIMING STANDARD PROCEDURE - VALVE TIMING (1) Disconnect the spark plug wires and remove the spark plugs. (2) Remove the engine cylinder head cover . bly, and rocker arms from above the No.1 cylinder. (4) Alternately loosen each capscrew, one turn at a time, to avoid damaging the bridge. (5) Rotate the crankshaft until the No.6 piston is at top dead center (TDC) on the compression stroke. (6) Rotate the crankshaft counterclockwise (viewed from the front of the engine) 90°. (7) Install a dial indicator on the end of the No.1 cylinder intake valve push rod. Use rubber tubing to (8) Set the dial indicator pointer at zero. the front of the engine) until the dial indicator (10) The timing notch index on the vibration damper should be aligned with the TDC mark on the (11) If the timing notch is more than 13 mm (1/2 inch) away from the TDC mark in either direction, NOTE: If the valve timing is incorrect, the cause TIMING BELT / CHAIN REMOVAL (1) Disconnect negative cable from battery. ENGINE/ENGINE BLOCK/VIBRATION DAMPER - (3) Remove the fan, hub assembly and fan shroud (Refer to 7 - COOLING/ENGINE/RADIATOR FAN - (4) Remove the accessory drive brackets that are attached to the timing case cover. (5) Remove the A/C compressor (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/A/C erator bracket assembly from the engine cylinder (6) Remove the oil pan-to-timing case cover bolts and timing case cover-to-cylinder block bolts. (7) Remove the timing case cover and gasket from the engine. (8) Pry the crankshaft oil seal from the front of the timing case cover (Fig. 87). INSTALLATION Clean the timing case cover, oil pan and cylinder block gasket surfaces. (1) Install a new crankshaft oil seal in the timing case cover. The open end of the seal should be toward (2) Position the gasket on the cylinder block. gasket and the cylinder block. (4) Insert Timing Case Cover Alignment and Seal Installation Tool 6139 in the crankshaft opening in (5) Install the timing case cover-to-cylinder block and the oil pan-to-timing case cover bolts. (6) Tighten the 1/4 inch cover-to-block bolts to 7 N·m (60 in. lbs.) torque. Tighten the 5/16 inch front (7) Remove the cover alignment tool. damper hub contact surface of the seal. (9) Apply Mopar t Silicone Rubber Adhesive Seal- ant to the keyway in the crankshaft and insert the Fig. 87 Timing Case Cover Components 1 - TIMING CASE COVER TJ ENGINE 4.0L 9 - 127 OIL PUMP (Continued) |