Negative battery terminal cable should be removed. On the Delco Loc II audio system equipped models, make certain the lockout feature is deactivated prior to any process that involves disconnecting the battery. After that, the drive belt should be removed. With the parking brake applied and the shifter in Park (automatic) or in gear (manual), raise the front of the vehicle and securely support it on jackstands. Remove The bolt from the front of the crankshaft. Most likely, a breaker bar will have to be used because the bolt is very tight. In case there is no special tool, insert a bar through a hole in the damper to keep the crankshaft from turning over. Harmonic Balancer should be removed from crankshaft using a puller. If you use a jaw-type puller that releases force onto outer edge, this will ruin the balancer; use a bolt-type puller which applies force on balancer hub instead. The oil seal will need to be checked for wear and replaced if necessary. Thin layer of clean multi-purpose grease needs to be applied on Harmonic Balancer hub's seal contact surface. Place balancer on crank shaft and slide through seal until bottom of sprocket is reached by it. Note that slot (keyway) in hub must align with Woodruff key at end of crankshaft. Crankshaft bolt can also be employed for pressing balancer into position. Tighten down on crankshaft bolt thoroughly but carefully because too much force could break something; therefore, you have permission to exercise caution while driving! The remaining steps are just as they were before taking it off.