Sunday, April 8, 2012

How to Replace Timing Chain on Chevrolet Corvette?

The complete details for Timing Chain Cover, Chain, Sprockets, & Seal Replacing.

In this chapter the details are provided to replace timing chain and its related components for Chevy Corvette car models.

The procedure is mentioned with complete step by step instructions with details and diagrams.

The details are as follows:-----

  1. Drain the cooling system.
  2. Drain the engine oil.
  3. Remove or disconnect the following:

    Negative battery cable
    Accessory drive belt
    Power steering gear
    Starter motor
    Right transmission cover and bolt
  4. Install a flywheel holding tool.
  5. Matchmark the position of the crankshaft balancer.
  6. Remove the crankshaft balancer bolt.
  7. Using a suitable tool, remove the crankshaft balancer, see Crankshaft Balancer. 

    Fig. Using a suitable tool, remove the crankshaft balancer
  8. Remove or disconnect the following:

    Water pump
    Front cover and gasket
    Oil pan
    Oil pump
  9. Rotate the crankshaft until the timing marks are aligned. The marks should face each other. Remove the camshaft sprocket bolts.
    Do not turn the crankshaft after the timing chain has been removed. Damage to the pistons or valves may occur.
  10. Remove or disconnect the following: 

    Camshaft sprocket and timing chain.
    Crankshaft sprocket using a suitable puller. 

    Fig. A puller is needed to remove the crankshaft sprocket
To install:
  1. Be sure the timing mark on the crankshaft sprocket is at the 12 O-clock position. If not rotate the crankshaft to the correct position.
  2. Install or connect the following:
  3. Crankshaft sprocket with a Crankshaft Balancer and Sprocket Installer tool.
  4. Timing chain on the camshaft sprocket.
  5. Timing chain and sprocket assembly so the timing marks are aligned and torque the camshaft sprocket bolts as follows: 

    All except 2007 6.0L engine and 2008 6.2L engine, tighten the camshaft sprocket bolts to 26 ft. lbs. (35 Nm)
    2007 6.0L engine and 2008 6.2L engines, tighten the camshaft sprocket bolt a first pass to 55ft. lbs. (75 Nm), then tighten the camshaft sprocket bolt a final pass an additional 50 degrees 

    Fig. Timing chain alignment
  6. Install the oil pump and torque the bolts to 18 ft. lbs. (25 Nm).
  7. Install the oil pan with a new gasket.
  8. Install the front cover with a new gasket and seal and hand-tighten the bolts at this time.
  9. Install the oil pan to cover bolts and hand-tighten them at this time. Install Front Cover alignment plate J-41480 and Front Cover Alignment Tool J-41476 to ensure front cover is properly aligned. Torque the oil pan-to-front cover bolts to 18 ft. lbs. (25 Nm) then the remaining bolts to 18 ft. lbs. (25 Nm). 

    Fig. Install the Front Cover Alignment tool J-41476 as shown
  10. Remove the alignment tools.
  11. Install the water pump.
  12. Position the balancer on the end of the crankshaft, using the matchmarks as a reference.
  13. Install the crankshaft balancer, refer to Crankshaft Balancer section.
  14. Remove the flywheel holding tool.
  15. Install or connect the following:

    Starter motor
    Power steering gear
    Accessory drive belt
    Negative battery cable
  16. Fill the cooling system to the correct level.
  17. Fill the engine with oil to the correct level.
  18. Start the engine and check for leaks.

These details will help.


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