GM 10021360 Pulley,Crankshaft

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Remove the cable from the negative battery terminal, then loosen the accessory drivebelt tension adjusting bolts and remove the drivebelts, tagging each belt for easier reinstallation. Jack up the vehicle and secure it on jackstands before removing the right rear wheel. Take out the right rear inner fender splash shield by pulling out the plastic pop fasteners, as this is necessary to access the crankshaft pulley. If equipped with a manual transaxle, apply the parking brake and put the transaxle in gear to prevent the engine from turning over, then remove the crank pulley bolts. For vehicles with an automatic transaxle, remove the starter motor and immobilize the starter ring gear with a large screwdriver. A breaker bar may be needed due to the tightness of the bolts. To loosen the crankshaft hub retaining bolt, thread a bolt into one of the pulley bolt holes, place a large breaker bar and socket on the retaining bolt, immobilize the hub with a large screwdriver, and then remove the bolt. Remove the crank hub, using a puller if necessary, and carefully pry the oil seal out of the front cover with a large screwdriver, taking care not to damage the cover. Install the new seal with the lip toward the engine, driving it into place with a seal installation tool or a large socket. Apply a thin layer of multi-purpose grease to the seal contact surface of the hub, position the pulley hub on the crankshaft nose, and ensure it aligns with the Woodruff key. Use the crankshaft hub bolt to press the hub into position and tighten it to the specified torque. Install the crank pulley on the hub, applying thread locking compound to the pulley-to-hub bolts before installation, and finally reinstall the drivebelts and the right rear inner fender splash shield.

The inertia weight section of the harmonic balancer is assembled to the hub with a rubber sleeve, the removal and installation procedures must be taken otherwise the tuning of the balancer and the engine timing reference will be faulty. Start with the removal of the negative cable from the battery, then, if needed, free the bolts that regulate the position of the accessory drivebelts and detach all the belts, putting tags to facilitate their reconnection. Lift the car and fix it on jack stands and remove the right side inner fender splash shield for easy access. Tighten the starter ring gear with a large screwdriver and undo the bolts on the accessory drivebelt pulley and upon one removing the pulley. Even when the ring gear is locked in position remove the sinc balancer retaining bolt and place a puller on the sinc balancer and slowly pull it off the crank-shaft without dropping it. The use of a puller that bolts to the hub should be used because a claw-type gear puller will only pull the outer part of the balancer from the hub. The harmonic balancer has three timing notches on the inertia ring, while the 1 cylinder timing reference mark is white painted in production; in case of a new balancer assembly put your mark there also. Also before installation of the balancer, apply the engine oil to the front cover seal contact region and the sealant to the key and key way. Place the balancer upon the key of the crankshaft in such a manner that the key way is correctly positioned with the key. This can be done using a balancer installation tool or if none is available, use a large socket, washer and the balancer retaining bolt and use it to press the balancer onto the nose of the crankshaft. It is recommended that after completing the removal of the installation tool or socket, washer, and bolt, the next process is the proper installation of the balancer retaining bolt that is tightened to the right torque. Replace the accessory drive pulley and the retaining bolts to the torque mentioned, replace the right inner fender splash shield, lower the car, set the accessory drive belts and connect the negative battery cable to the battery.

Place the damper in position over the key on the crankshaft, ensuring the damper keyway aligns with the key.

Remove the installation tool and install the torsional damper center retaining bolt, torquing it to specifications.

A torsional damper installer is used to draw the damper onto the crankshaft, distributing the draw evenly around the inner hub.