2000 Pontiac Grand AM Revised Timing Chain, Sprocket, and Tensioner Removal Procedure

2000 Pontiac Grand AM Revised Timing Chain, Sprocket, and Tensioner Removal Procedure

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Caution: Refer to Battery Disconnect Caution in Service Precautions. 1. Disconnect the negative battery cable. 2. Remove the engine front cover. Refer to Engine Front Cover Replacement. 3. Rotate the crankshaft clockwise (as viewed from the front of the engine, normal rotation) until the camshaft sprocket timing dowel pin holes line up with the holes in the timing chain housing. 4. The crankshaft sprocket keyway should point upwards and line up with the centerline of the cylinder bores. This is the Timed position. 5. Remove the timing chain guides. 6. Raise and support the vehicle. Refer to Vehicle Lifting. 7. Ensure that all of the slack in the timing chain is above the tensioner assembly. 8. Remove the timing chain tensioner. 9. The timing chain must be disengaged from any wear grooves in the tensioner shoe in order to remove the shoe. Slide a screwdriver blade under the timing chain while pulling the shoe outward.

Notice: Do NOT attempt to pry the sprocket off the camshaft or damage to the sprocket or chain housing could occur. 10. If difficulty is encountered in removing the timing chain tensioner shoe, use the following procedure in order to remove the intake camshaft sprocket: 10.1. Lower the vehicle. 10.2. Hold the intake camshaft sprocket with the J 39579 and remove the sprocket bolt and washer. 10.3. Remove the washer from the bolt and rethread the bolt back into the camshaft by hand (the bolt provides a surface to push against). 10.4. Remove the intake camshaft sprocket. Use a three-jaw puller in the three relief holes in the sprocket.