1996 GMC Jimmy Timing chain

1996 GMC JIMMY
250,000 MILES • 6 CYL • 2WD • AUTOMATIC
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WGHATCH
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I am replacing the timing chain and spockets (have never been replaced) because of random misfires. when installing the crankshaft sproket, how can I tell if it is 'seated' properly?
Jan 23, 2010 at 11:16 AM
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BLUELIGHTNIN6
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thanks for the donation this requires a special service tool.. use service tool number J-5590, or equivalent crankshaft sprocket installation tool, and a hammer to drive the crankshaft sprocket onto the crankshaft, without disturbing the position of the engine.


https://www.2carpros.com/forum/automotive_pictures/261618_1_95.jpg

Jan 23, 2010 at 10:02 PM
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WGHATCH
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I understand how to "push" the gear back on. What I do not know is how far on the crankshaft the gear needs to go.
Jan 24, 2010 at 12:18 AM
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BLUELIGHTNIN6
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you have to push the sprocket until it is fully seated on the flange of the crankshaft nose, you will fill it "bottom out" when it is seated properly.
Jan 24, 2010 at 12:49 AM