2014 Jeep Wrangler JK Factory Service Manual 09 - Engine, 3.0L Gasoline

ROCKER ARM, Valve

DESCRIPTION

The rocker arms are steel stampings with an integral roller bearing. The rocker arms incorporate a 0.5 mm oil hole in the lash adjuster socket for roller and camshaft lubrication.

REMOVAL

NOTE:

The LH cylinder head rocker arms are shown, the RH cylinder head rocker arms are similar.

  1. Disconnect and isolate the negative battery cable.

    2.  
  2. Remove the camshaft(s) (Refer to 09 - Engine/Cylinder Head/CAMSHAFT, Engine - Removal)

    NOTE:

    If the rocker arms are to be reused, identify their positions so that they can be reassembled into their original locations.


    3.  
  3. Remove the rocker arm(s) (1).

    4.  

INSPECTION

Inspect the cam follower assembly for wear or damage. Replace as necessary.

INSTALLATION

CAUTION:

Proper inspection of the rocker arms is required to ensure proper installation. Inspection from the top and also side view is critical to verify the proper seated position of each and every rocker arm. Failure to install the rocker arms correctly may cause severe engine damage.




NOTE:

The LH cylinder head rocker arms are shown, the RH cylinder head rocker arms are similar. If the rocker arms are being reused, reassemble them into their original locations.

  1. Lubricate the rocker arms with clean engine oil before installation.

    NOTE:

    When placing the rocker arms. The valve stem should fit securely into the rocker arm guides.


    2.  
  2. Position the rocker arm(s) (1) onto the lifter(s) and valve stem(s).


    3.  
  3. Position the camshaft(s) onto the mounts and install the camshaft caps. Hand tighten the cap retaining bolts to 2 N·m (18 in. lbs.).

    NOTE:

    If any of the rocker arms are not installed properly. Loosen the camshaft caps and reposition the rocker arms.


    4.  
  4. Verify that the rocker arm (3) is positioned over the lifter (4).

    5.  
  5. Verify that the rocker arm roller (2) is seated to the camshaft lobe (1).

    6.  
  6. Use a mirror to verify the valve stem (4) is centered between the rocker arm guides (3).

    7.  
  7. Verify the camshaft lobe (1) is centered over the rocker arm roller (2).

    8.  
  8. Tighten the camshaft caps (Refer to 09 - Engine/Cylinder Head/CAMSHAFT, Engine - Installation) .

    9.