Crankshaft Sprocket : The sprocket on a crankshaft is used to turn a timing belt or timing chain in an automotive engine application. A crankshaft sprocket fits tightly on a crankshaft and uses a crankshaft key to line it up perfectly to the position the manufacturer wants it to start. The timing chain or timing belt then connects the crankshaft sprocket to the camshaft sprocket(s) to rotate the top of the engine in perfect synchronization. On some crankshaft sprockets, there may be a crankshaft position sensor reluctor to help generate the crankshaft sensor pattern for the engine computer.
Crankshaft sprockets used for a timing chain engine may wear out with a timing chain and have to be replaced during a timing chain replacement job. Wear patterns caused by a stretched timing chain can wear the crankshaft sprocket teeth to out of specifications causing the replacement to be inevitable.
Timing belt crankshaft sprockets usually do not wear out, but can seize to the crankshaft and have to be removed forcibly. If the crankshaft sprocket is damaged during removal and installation, it must be replaced to avoid engine damage.
Crankshaft sprockets that have a reluctor can also cause a problem to in which the crankshaft sprocket has to be replaced. If the reluctor is not perfect, the engine computer will not read the correct pattern and the engine may not run or run properly. If you need a crankshaft sprocket replaced, Guy’s Automotive can help. Contact Guy’s Automotive today for a quote on your crankshaft sprocket.