H3 2006

Balance Shaft

Print

Removal & Installation



3.5L, 3.7L, & 5.3L Engines

NOTE
Do not disassemble the balance shaft assembles. Remove and install the balance shafts as complete assemblies.

  1. Rotate the crankshaft until the left hand balance shaft sprocket timing mark is at 12:00. The right hand balance shaft sprocket timing mark should be at 2:30. The crankshaft dowel pin hole is at 11:00, and the crankshaft sprocket mark should be at 4:30. Make sure the 3 timing marks on the sprockets line up with a dark link on the chain. Every 11 crankshaft rotations, 3 of the 5 dark links on the chain will line up with the timing marks.
    NOTE
    It may be necessary to retract the tensioner plunger by rotating the link plate clockwise. Insert a small tool into the link plate hole in order to prevent the tensioner from ratcheting to full extension.



    Click image to see an enlarged view

    Fig. Rotate the crankshaft until the left hand balance shaft sprocket timing mark is at 12:00

  2.  
  3. Remove the balance shaft chain tensioner and bolts.

    Click image to see an enlarged view

    Fig. Remove the balance shaft chain tensioner and bolts

  4.  
  5. Remove the chain from the crankshaft sprocket.
    NOTE
    It may be necessary to remove the right balance shaft bolts and rotate the retainer plate counter-clockwise in order to gain chain slack.



    Click image to see an enlarged view

    Fig. Remove the chain from the crankshaft sprocket

  6.  
  7. Remove the chain from the balancer sprockets.
    CAUTION
    Rotate the balance shafts to check for free rotation. If the balance shafts do not turn free, inspect the balance shaft bearings and bearing surface for damage.

  8.  
  9. Remove the balance shaft chain guide bolts.

    Click image to see an enlarged view

    Fig. Remove the balance shaft chain guide bolts

  10.  
  11. Remove the balance shaft chain guide.
  12.  
  13. Remove the balance shaft assembly retaining bolts.

    Click image to see an enlarged view

    Fig. Remove the balance shaft assembly retaining bolts

  14.  
  15. Remove the balance shaft assemblies.
  16.  

To install:


NOTE
Do not disassemble the balance shaft assemblies. Remove and install the balance shafts as complete assemblies.

  1. Lubricate the balance shaft bearing journals with clean engine oil.
  2.  
  3. Install NEW balance shaft assemblies with the counterweight down to prevent damage to the balance shaft bearings.
  4.  
  5. Install NEW left balance shaft assembly retaining bolts. Tighten the NEW left balance shaft assembly retaining bolts to 89 inch lbs. (10 Nm).
  6.  
  7. Install the balance shaft chain guide.
  8.  
  9. Install the balance shaft chain guide bolts. Tighten the balance shaft chain guide bolts to 89 inch lbs. (10 Nm).
    NOTE
    Rotate the right balance shaft retainer plate counter-clockwise to allow chain installation over all 3 sprockets.

  10.  
  11. Install the balance shaft chain onto the balancer sprockets and crankshaft sprocket.
  12.  
  13. Rotate the crankshaft until the left hand balance shaft sprocket timing mark is at 12:00. The right hand balance shaft sprocket timing mark should be at 2:30. The crankshaft dowel pin hole is at 11:00, and the crankshaft sprocket mark should be at 4:30. Make sure the 3 timing marks on the sprockets line up with a dark link on the chain. Every 11 crankshaft rotations, 3 of the 5 dark links on the chain will line up with the timing marks.
  14.  
  15. Rotate the retainer plate clockwise while holding the chain onto the crankshaft sprocket.
  16.  
  17. Install NEW right balance shaft assembly retaining bolts. Tighten the NEW right balance shaft assembly retaining bolts to 106 inch lbs. (12 Nm).
  18.  
  19. Install the balance shaft chain tensioner and bolts. Tighten the balance shaft chain tensioner bolts to 89 inch lbs. (10 Nm).
    NOTE
    Do not force the tensioner to the next notch by pushing up on the tensioner shoe. This will over-tension the chain and may result in a whining noise.

  20.  
  21. Remove the small tool from the link plate hole in order to regain chain tension.
  22.  

 
label.common.footer.alt.autozoneLogo