Nissan 12303-4W010 Pulley-Crankshaft

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Disconnect the negative cable from the battery. Raise the front of the vehicle and secure it on jackstands. Remove the engine under cover. Remove the lower radiator shroud and remove the engine cooling fan. Remove the drivebelts. Use a strap wrench around the crank-shaft pulley to hold it while using a breaker bar and socket to remove the crankshaft pulley center bolt. Wedge a prybar or two screwdrivers behind the crankshaft pulley and carefully pry it off the crankshaft. If the pulley is difficult to remove, place a two jaw type puller into the openings in the center of the hub and pull it off. Do not place the puller jaws around the outside of the crankshaft pulley or damage to the pulley will occur. Depending on the type of puller you have it may also be necessary to remove the radiator to gain sufficient clearance to use the puller. Installation is the reverse of removal. Tighten the pulley bolt to the specific torque. Adjust the drivebelts.

The next step is to remove the drivebelts from the vehicle.