HHR 2006-2008

Balance Shaft

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Balance Shaft Chain



Removal & Installation
2.0L Engine


Click image to see an enlarged view

Fig. Remove the balance shaft drive chain tensioner bolts and tensioner

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the balance shaft drive chain tensioner bolts and tensioner.

    Click image to see an enlarged view

    Fig. Remove the adjustable balance shaft chain guide bolt and guide

  4.  
  5. Remove the adjustable balance shaft chain guide bolt and guide.

    Click image to see an enlarged view

    Fig. Remove the small balance shaft drive chain guide bolts and guide

  6.  
  7. Remove the small balance shaft drive chain guide bolts and guide.
  8.  
  9. Remove the upper balance shaft drive chain guide bolts and guide.
    NOTE
    The balance shaft drive chain will be easier to remove if you gather all of the slack in the chain between the crankshaft and water pump sprockets.



    Click image to see an enlarged view

    Fig. Balance shaft drive chain

  10.  
  11. Remove the balance shaft drive chain.
  12.  

To install:


NOTE
If the balance shafts are not properly timed to the engine, the engine may vibrate and make noise.

  1. Install the upper balance shaft chain guide and bolts. Tighten the upper balance shaft chain guide bolts to 15 Nm (11 ft. lbs.).
  2.  
  3. Install the small balance shaft chain guide.
  4.  
  5. Install the balance shaft chain guide bolts. Tighten the chain guide bolts to 15 Nm (11 ft. lbs.).
  6.  
  7. Install the adjustable balance shaft drive chain guide.
  8.  
  9. Install the adjustable balance shaft drive chain guide bolts. Tighten the chain guide bolts to 10 Nm (89 inch lbs.).
  10.  
  11. Reset the timing chain tensioner by performing the following steps:
    1. Turn the tensioner plunger 90 degrees in its bore and compress the plunger.
    2.  
    3. Turn the tensioner back to the original 12 o'clock position and insert a paper clip through the hole in the plunger body and into the hole in the tensioner plunger.
    4.  

  12.  
  13. Install the timing chain tensioner.
  14.  
  15. Install the chain tensioner bolts. Tighten the chain tensioner bolts to 10 Nm (89 inch lbs.).
  16.  
  17. Remove the paper clip from the balance shaft drive chain tensioner.
  18.  

Removal & Installation



2.0L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the radiator.
  4.  
  5. Remove A/C condenser
  6.  
  7. Remove the timing chain, sprocket and tensioner.
  8.  
  9. Remove the balance shaft bearing carrier bolts.
    WARNING
    It is possible to install the intake side balance shaft into the exhaust side and vice versa. Please use care not to install the balance shafts into the wrong bores. Engine vibration will result. Do not remove the bolt holding the sprocket.



    Click image to see an enlarged view

    Fig. Remove the balance shaft assemblies

  10.  
  11. Remove the balance shaft assemblies.
    WARNING
    Proper centering of the tool is required on the balance shaft bushing. If the tool is not properly centered then damage to the bearing bore and block will occur.



    Click image to see an enlarged view

    Fig. Install tool J 43650 into the balance shaft hole

  12.  
  13. Install tool J 43650 into the balance shaft hole. Insert the tool with the foot parallel to the shaft.
  14.  
  15. When the tool is inserted in the block turn the tool so that the foot becomes perpendicular to the shaft. Center the foot of the tool on the balance shaft bushing.

    Click image to see an enlarged view

    Fig. When tool J 43650 is properly installed, before removing the bushing, the end of the tool should be 116 mm (4.6 in) (a) from the block face

  16.  
  17. Once the tool is centered on the balance shaft bushing, then insert the centering guide into the front balance shaft bore and tighten the nut with an appropriate wrench. When tool J 43650 is properly installed, before removing the bushing, the end of the tool should be 116 mm (4.6 in) (a) from the block face. If the tool is less than approximately 114 mm (4.5 in) (a), recheck the tool alignment.
  18.  
  19. Tighten the nut on tool J 43650 until the tension releases. When the tension releases, remove the tool and the balance shaft bushing.
  20.  

To install:

  1. Install the balance shaft bushing using tool J 43650.
  2.  
  3. Seat the balance shaft bushing into the bore using tool J 43650 and a wrench.
  4.  
  5. When tool J 43650 is fully seated in the engine block remove it with a wrench.
    NOTE
    If the balance shafts are not properly timed to the engine, the engine may vibrate or make noise.

  6.  
  7. Place the number one piston at top dead center (TDC).
  8.  
  9. Lubricate the balance shaft lobes with engine oil.
  10.  
  11. Install the balance shafts into their bores.
  12.  
  13. Install the balance shaft retaining bolts. Tighten the balance shaft retaining bolts to 10 Nm (89 inch lbs.).
  14.  
  15. Install the timing chain, sprocket and tensioner.
  16.  
  17. Install the A/C condenser.
  18.  
  19. Install the radiator.
  20.  

 
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