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Chevrolet Sonic Repair Manual: Exhaust Camshaft Replacement

Chevrolet Sonic Repair Manual / Powertrain / Engine / Valvetrain / Camshaft / Exhaust Camshaft Replacement

Removal Procedure
  1. Remove the camshaft intake and exhaust sprocket. Refer to Camshaft Intake and Exhaust Sprocket Replacement.


  2. Remove and DISCARD the camshaft sprocket bolts (2) and the camshaft position exciter wheels (1).
  3. Allow the both camshaft sprockets with the timing chain to rest on the engine front cover.

  4. Remove the camshaft bearing cap bolts in sequence shown. Ensure to remove the bolts one turn at a time until there is no spring tension pushing on the camshaft.

    5. Note:

    Mark the camshafts upon removal to ensure installation is in the correct position.

  5. Remove the camshaft bearing cap bolts (1).
  6. Remove the camshaft bearing caps (2).
  7. Remove the exhaust camshaft (3).
Installation Procedure


    Note:

    Ensure that the camshaft sealing rings are in place in the camshaft grooves. Camshaft sealing rings must be in place below the surface of the camshaft journal in order to avoid being pinched between the cylinder head and the camshaft caps.

  1. Lubricate camshaft and camshaft bearing caps with engine oil.
  2. Install the exhaust camshaft (3).
  3. Install the camshaft bearing caps (2).

    4. Caution:

    Refer to Fastener Caution.

  4. Install the camshaft bearing cap and hand tighten the bolts (1).

  5. Install and tighten the camshaft bearing cap bolts one turn at a time in sequence as shown 8 Y (71 lb in)

    .

  6. Install the camshaft intake and exhaust sprocket. Refer to Camshaft Intake and Exhaust Sprocket Replacement.
Exhaust Camshaft Removal
Remove the camshaft bearing cap bolts in a spiral sequence as shown one turn at a time until there is no spring tension pushing on the camshaft. Note: Mind the markings on the ...

Intake Camshaft Installation
Note: Mind the markings on the camshaft bearing caps. Camshaft bearing caps should be installed in their original position. Lubricate camshaft and camshaft bearing caps with eng ...

Other materials:

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Hill Start Assist (HSA)
This vehicle has an HSA feature, which may be useful when the vehicle is stopped on a grade. This feature is designed to prevent the vehicle from rolling, either forward or rearward, during vehicle drive off. After the driver completely stops and holds the vehicle in a complete standstill on a ...

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