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Courtesy of GENERAL MOTORS CORP. 2. Rotate the crankshaft until the correct timing chain and timing marks align: The left hand balance shaft sprocket timing mark (1) is at the 12:00 position. The right hand balance shaft sprocket timing mark (2) is at the 2:30 position. The crankshaft sprocket timing mark (3) is at the 4:30 position. The 3 timing marks (1-3) on the sprockets line up with a dark link on the chain. IMPORTANT: Every 11 crankshaft rotations, 3 of the 5 dark links on the timing chain will line up with the timing marks.
2006 Hummer H3 2006 ENGINE Engine Mechanical - 3.5L (L52) - H3
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