Why does a crankshaft pulley go bad?

Why does a crankshaft pulley go bad?

Another way a pulley can fail is during the fitting process there has been an interruption with the assembly press or the friction bearing has been incorrectly pressed in. This can occur during the making and installation of the part with the vehicle.

What happens when the crankshaft pulley goes bad?

But if the balancer starts to go bad for any reason, the vibrations won’t be absorbed anymore. This will cause the engine to shake profusely the faster you go. 2) Alternator Failure. The crankshaft pulley is responsible for powering the alternator. So naturally, if the crankshaft pulley goes bad, then you can expect the alternator to stop working.

How much does it cost to replace a crankshaft pulley?

Replacement Cost. The cost to replace a bad crankshaft pulley is anywhere from $350 to $400. The cost of labor is around $150 to $180 and the cost of parts is around $200 to $220. It is not the most expensive replacement job, but it is not too cheap either.

What are the symptoms of a bad crankshaft harmonic balancer?

Symptoms of a Bad or Failing Crankshaft Harmonic Balancer. 1 1. Engine vibration. One of the first symptoms of a potential problem with the harmonic balancer is engine vibration. The harmonic balancer is 2 2. Misaligned timing marks. 3 3. Separated harmonic balancer.

What causes a crankshaft to break at certain speeds?

At certain speeds, the torque is in sync with the cylinders, which creates resonance. This resonance causes too much stress for the crankshaft. If this stress continues, the crankshaft will break and your vehicle will be inoperable.

But if the balancer starts to go bad for any reason, the vibrations won’t be absorbed anymore. This will cause the engine to shake profusely the faster you go. 2) Alternator Failure. The crankshaft pulley is responsible for powering the alternator. So naturally, if the crankshaft pulley goes bad, then you can expect the alternator to stop working.

What causes a crank pulley to wobble?

If the outer ring walked it would not give the pulley a wobble. The pulley bolts to the solid portion not the outer ring that is separated by rubber. All those Ford boys pay for my Chevy toys. [This message has been edited by Mstrtch (edited May 25, 2003).]

Replacement Cost. The cost to replace a bad crankshaft pulley is anywhere from $350 to $400. The cost of labor is around $150 to $180 and the cost of parts is around $200 to $220. It is not the most expensive replacement job, but it is not too cheap either.

What happens to the crankshaft when it slows down?

The speeding up and slowing down of the crankshaft produces torsional vibration or twisting force, which can put stress on the crankshaft and the connected components. If the stress is great enough, the crankshaft will eventually fail.