Pontiac 12551537 Balancer Assembly, Crankshaft

At the top take off the hose from the retaining strap of the hose by unbuckling the strap that holds the hose on the underside of the shroud and move the hose to the side. Subsequently, twist open the four bolts holding the upper radiator shroud in place and pry the shroud off from the radiator, then remove the cooling fan from the fan pulley. If your car has V-belts, slacken the accessory drivebelt adjusting bolts slightly to release the drivebelts, which must be tagged so that they can be reconnected correctly in the future. For the models with the serpentine belt, turn the belt tensioner pulley in the opposite direction you are making and unhook the belt. Bolt up in the center of the crankshaft pulley has to be unbolted and then the pulley has to be pulled off. Put a puller against the harmonic balancer and slowly pull it off the crankshaft; it droops as it comes loose. When fitting the harmonic balancer first lubricate the front cover seal area using the engine oil or multi-purpose grease. Place the harmonic balancer on top of the key on the crankshaft make sure that the harmonic balancer keyway is on the key. The installation of the harmonic balancer requires the usage of an installation tool which is used to apply pressure on the crankshaft and ensure that this pressure is evenly spread across the hub of the harmonic balancer. After the installation tool is taken off, the crankshaft pulley should be installed and the bolts to be tightened to the required torque. Last, going backwards for the remaining components, undo the drivebelts and remove them.

Remove the hose from the retaining strap atop the radiator shroud by releasing the end of the strap from the underside of the shroud with pliers. Remove the bolts and separate the upper radiator shroud from the radiator. Remove the cooling fan from the fan pulley. Loosen the accessory drivebelt adjusting bolts as necessary and remove the drivebelts, tagging each one as it is removed to simplify reinstallation. Remove the bolt from the center of the crankshaft pulley, using a screwdriver to lock the starter ring gear on the flywheel, then remove the pulley. Attach a puller to the harmonic balancer and draw it off the crankshaft, being careful not to drop it as it breaks free; avoid using a common gear puller as it may separate the outer portion from the hub. Use only a puller that bolts to the hub to remove the harmonic balancer, as applying force to the outer edge may cause damage. Before installing the harmonic balancer, coat the front cover seal area on the balancer with engine oil or multi-purpose grease. Place the balancer in position over the key on the crankshaft, ensuring the balancer keyway lines up with the key. Using a balancer installation tool, push the balancer onto the crankshaft, as this tool distributes the pressure evenly around the hub. Remove the installation tool and install the balancer retaining bolt, tightening it to the specified torque. Follow the removal procedure in reverse order for the remaining components and adjust the drivebelts accordingly.