2005 Buick Century Timing Chain

You need to remove the engine front cover, and rotate the crankshaft until the timing marks in the following locations are aligned: the timing chain dampener to the crankshaft sprocket and the timing chain dampener to the camshaft sprocket locator hole. Then you can remove the camshaft sprocket bolt, the camshaft sprocket with the timing chain, the crankshaft sprocket, the timing chain dampener bolts, the timing chain dampener, remove the camshaft thrust plate screws, and the camshaft thrust plate.

The recommended torque is 140 Nm (103 ft. lbs.).

You need to install the camshaft thrust plate, the camshaft thrust plate screws, the timing chain dampener, and the bolts to the block and the crankshaft sprocket, apply engine oil supplement (EOS) GM P/N 1052367 (Canadian P/N 992869) or the equivalent to the sprocket thrust surface, hold the camshaft sprocket with the chain hanging down, and install the chain to the crankshaft gear, align the crankshaft timing mark to the timing mark on the bottom of the timing chain dampener, hold the camshaft sprocket with the timing chain hanging down and install the timing chain to the crankshaft gear, align the timing mark on the camshaft gear with the timing mark on top of the timing chain dampener, install the camshaft sprocket bolt, coat the crankshaft and the camshaft sprocket with engine oil and install the engine front cover.