Jeep 53021552AA Engine Intake Rocker Arm

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To undertake this procedure, you will need a particular valve spring compressor. An alternative is to dismantle the engine heavily removing the timing chains and camshafts. Before commencing start by placing the transmission in park, apply parking brake or block the rear wheels and disable the ignition system. Remove the valve cover(s). Separate and put away rocker arms and lash adjusters properly labeled. Rotate engine's crankshaft clockwise until pistons are at their correct positions. Remove rocker arms from cylinders 2, 6, 1, 3 and 5 of V6 engines.Remove rocker arms from cylinders 2,8 ,3 ,5 ,4 ,6 ,1 and 7 of V8 engines.Depress the valve spring using a valve spring compressor then pull out a rocker arm.In case you are replacing or removing just several adjusters or rockers arm then turn your crankshaft into proper position only.keep them with matching groups of them.Once the rocker arms are removed, pull out the lash adjusters and store them with the corresponding rocker arm.Examine if there is wear cracks or damages on such parts like Rocker Arms And Lash Adjusters.Start by installing oil filled Lash Adjustors first but not fully full.

Little or no lash adjuster plunger travel indicates that they are full of oil.

Do not continue tightening; instead, remove the rocker arm shafts and inspect all components carefully.

Tighten the rocker arm shafts starting with the center bolt, followed by the center right bolt, center left bolt, outer right bolt, and finally the outer left bolt.

Remove the rocker arms from cylinders 2, 6, 1, 3, and 5.

Carefully examine each rocker arm for wear, cracks, and other damage, paying attention to the steel roller tips and hydraulic lash adjusters. Confirm that the rollers move freely without signs of wear and check the lash adjuster contact surfaces for any wear or damage.

Installation is the reverse of removal, with the exception that the lash adjuster should be installed first, ensuring they are at least partially full of oil, indicated by little or no plunger travel.

No, do not remove the lash adjusters from the rocker arms to avoid damage.

Remove the pushrods and store them in order to prevent mixing them up during installation.

Mark the rocker arms and pedestals for proper identification.

Use a socket and ratchet attached to the crankshaft pulley bolt, and rotate the engine in a clockwise direction until the cam lobe for the rocker arm to be removed is located on its base circle.

Inspect the pushrods for cracks and excessive wear by rolling them across a flat surface to check for bends.

Remove rocker arms from cylinders No. 2 and 6 with the No. 1 piston at TDC, then rotate the crankshaft another 180 degrees to remove the rocker arm from cylinder No. 1, followed by cylinders No. 3 and 5, and finally cylinder No. 4.

The inside diameter of each rocker arm bore and the outside diameter of each rocker shaft.

Once fully loosened, lift the rocker shaft assembly off the cylinder head, ensuring the retainers under the bolt heads remain in place.

The first step is to remove the valve covers from the cylinder heads.

On the cylinder head.

Mark the rocker arms and pedestals for proper identification.

If any components are worn or damaged, replace them with new ones and install new shafts as well.

Place the transmission in Park, apply the parking brake or block the rear wheels, and disable the ignition system.

Rotate the engine clockwise until the pistons are positioned correctly.

The first step is to remove the valve covers from the cylinder heads.

Install the pushrods, lubricate them, apply engine assembly lube to valve stem ends and upper pushrod ends, lubricate the rocker shafts, and assemble the rocker shafts and components in their original positions on the cylinder heads. Tighten the rocker arm shaft bolts following the specified sequence and torque in several steps, ensuring proper seating of the pushrods.

The inside diameter of each rocker arm bore and the outside diameter of each rocker shaft.

The inside diameter of each rocker arm bore and the outside diameter of each rocker shaft.

The first step is to remove the valve covers from the cylinder heads.

Cracks and scoring, and replace if necessary.

The alternative is to remove the timing chains and camshafts, which requires major disassembly of the engine.

The inside diameter of each rocker arm bore and the outside diameter of each rocker shaft.