Timing Chain (Unit Repair)

REMOVAL
^ Tool Required
- J 5825-A Crankshaft Sprocket Remover, Or Equivalent.





1. Remove the camshaft sprocket bolt.
2. Remove the camshaft sprocket.
3. Remove the timing chain.





4. Remove the crankshaft sprocket. Use the crankshaft sprocket remover.





5. Remove the timing chain dampener bolts.
6. Remove the timing chain dampener.

INSTALLATION
^ Tool Required
- J 38612 Crankshaft Sprocket Installer, Or Equivalent.





1. Install the crankshaft sprocket using the crankshaft sprocket installer.
2. Apply GM EOS P/N 1052367 or equivalent to the sprocket thrust surface.
3. Install the chain dampener to the block.
4. Align the crankshaft timing mark to the timing mark on the bottom of the chain dampener.
5. Hold the camshaft sprocket with the chain hanging down and install the chain to the crankshaft gear.
6. Align the timing mark on the camshaft gear (center line of the locator hole) with the timing mark on top of the chain dampener.
7. Remove the crankshaft sprocket installer.
8. Align the dowel in the camshaft with the dowel hole in the camshaft sprocket.
9. Draw the camshaft sprocket onto the camshaft using the mounting bolt.
10. Coat the crankshaft and camshaft sprocket with
engine oil.
^ Tighten the bolt to 110 Nm (81 ft. lbs.).