Jeep 5184377AF Engine Exhaust Camshaft

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Inspect the camshaft secondary sprockets for wear, along with the chains and tensioners for any signs of excessive wear that would necessitate replacement.

Mark and remove the rocker arms and hydraulic lash adjusters, then inspect the camshaft bearing surfaces and lobes for damage, ensuring to replace any defective parts.

Measure the lobe height of each cam lobe on the intake camshaft and record the measurements, ensuring they do not vary more than 0.010 inch.

The camshaft should be replaced.

Measure the bearing journals with a micrometer to check for excessive wear or out-of-round conditions, and use an inside micrometer for the journal diameters in the cylinder head.

Mark the lifters for proper reinstallation and remove them from the cylinder head.

Use the Mopar special tool for the procedure, remove the brake vacuum pump, and timing chain cover.

Lubricate the camshaft bearing journals and cam lobes with camshaft installation lube before carefully inserting the camshaft into the cylinder head.

You need to remove the timing chain cover, timing chain, sprockets, cylinder heads, and radiator. After that, remove the lifter rail mounting bolts and lifters from the engine block, ensuring each lifter is marked for its original position.

Inspect the camshaft secondary sprockets for wear, along with the chains and tensioners for any signs of excessive wear that would necessitate replacement.

Disconnect the ignition coils, remove the spark plugs, and label the ignition coils.

Caution is advised as the timing system is complex, and mistakes can lead to severe engine damage. Only highly experienced individuals should attempt this procedure, and consulting an expert is recommended if there is any uncertainty. It is crucial to double-check all work before starting the engine.

The camshaft bearing surfaces should be checked for pitting, score marks, galling, and abnormal wear. If any damage is found, the head must be replaced.

The camshaft should be supported near the block while being careful not to scrape or nick the bearings.

Inspect the bearings in the block for damage, using a small hole gauge and micrometer to determine the inside diameter and calculate oil clearance. Excessive clearance indicates the need for new bearings.

Use a long bolt as a handle to carefully pull the camshaft out while turning it.

Lubricate the camshaft bearing journals and lobes with moly-base grease or engine assembly lube.

Remove each rocker arm and lash adjuster, placing them in labeled bags.

To begin the installation process, dip the hydraulic lash adjusters in clean engine oil and install them in their original locations. Apply grease or engine assembly lube to the rocker arm contact points and rollers and install them in their original locations. Lubricate the camshaft bearing journals and lobes and carefully install the camshafts in the cylinder head. Install the camshaft bearing caps and tighten them to the specified torque. Rotate the camshafts and verify the alignment holes are in the neutral position. Slide the intake and exhaust phasers onto the camshafts and ensure the marks are aligned. Install the oil control valves into the camshaft phasers and tighten them to the specified torque. Release the tensioner plunger and rotate the engine to verify the alignment marks.

Position the engine at TDC (Top Dead Center) for cylinder number 1, then proceed to remove the valve cover, rocker arms, and pushrods.

You should engage the camshaft sprocket teeth with the drive chain links and position the sprocket over the dowel on the camshaft hub.