2012 Jeep Wrangler JK Factory Service Manual 09 - Engine, 2.8L Diesel

TENSIONER, Engine Timing

ADJUSTMENTS

ADJUSTMENTS

  1. With the upper and lower front covers removed and the timing belt installed, loosen timing belt tensioner.

    NOTE:

    Turning the belt tensioner counter clockwise moves the pointer in a clockwise direction. Also, if the tensioner bolt is too loose this will cause the tensioner alignment slot to jump off the alignment boss on timing cover.


    2.  
  2. Adjust timing belt tensioner by lining up the load indicator arrow (1) to the center of the tensioner load gage (2) as illustrated. Tighten the timing belt tensioner bolt to 28 N·m (21 ft. lbs.).

    3.  
  3. Rotate engine 2 complete revolutions and then recheck tensioner alignment. Verify that the tension indicator (1) is centered in the slot on the tensioner gage (2) slot as shown. Readjust tensioner alignment as necessary.

    4.  

REMOVAL

REMOVAL

  1. Disconnect the negative battery cable.

    2.  
  2. Remove the timing belt (Refer to 09 - Engine/Valve Timing/BELT, Timing - Removal) .

    3.  
  3. Remove bolt (4), and timing belt tensioner (3).

    4.  

INSTALLATION

INSTALLATION

  1. Install the timing belt tensioner (3). Do not tighten bolt (4) at this time. Verify that the slot in the tensioner alignment plate (1) is aligned with the boss (2) in the rear timing belt cover.

    NOTE:

    DO NOT remove the timing belt from the package until it is going to be installed. DO NOT expose timing belt to oil, grease or water contamination. DO NOT crimp belt at a sharp angle. DO NOT clean belt, pulleys or tensioner with solvent. Check that pulleys and bearings are not seized or damaged before installing belt.


    2.  
  2. Install the timing belt (Refer to 09 - Engine/Valve Timing/BELT, Timing - Installation) .

    3.  
  3. Connect the negative battery cable.

    4.