How do you replace a crankshaft pulley?

Tiny
CHEVYOWNER10
  • MEMBER
  • 2010 CHEVROLET AVEO
  • 1.6L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 78,000 MILES
I need to know how to replace a crankshaft pulley and what the torque specs are for the bolt.
Sunday, December 4th, 2022 AT 3:46 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,779 POSTS
Hi,

In general, these are usually an easy job. On your vehicle, the starter will need to be removed to access the sensor.

To get you started, here is a link that explains in general how it's done:

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

If you look below, I attached the directions specific to your vehicle for replacement. In sequence, I included the other tasks needed to complete the job.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.
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Sunday, December 4th, 2022 AT 9:13 PM
Tiny
CHEVYOWNER10
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Joe, this isn't for the sensor, it's the crankshaft pulley, harmonic balancer? LOL

PS. I replaced that sensor anyhow.
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Wednesday, December 7th, 2022 AT 3:37 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,779 POSTS
Hi,

Sorry about that. Ugh!

My manual doesn't show a replacement procedure. However, the removal is simple, but the space available makes it difficult.

If there is access via the wheel opening, that is the way I would go. Remove the wheel and fender liner to access the pulley.

Next, remove the serpentine belt. Once that is off, remove the center bolt on the pulley/harmonic balancer. See pic 2 below. You will need a puller to remove the part from the crankshaft.

Reinstallation is the opposite of removal. I attached the torque specs below. (See pic 1)
Let me know if this helps.

Take care,

Joe

See pics below.
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Wednesday, December 7th, 2022 AT 4:17 PM
Tiny
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  • 93 POSTS
No problem. I was just wondering; how do you torque the crankshaft pulley without making the crankshaft move? Most applications have a holder tool. This crankshaft pulley don't look like there is any holes to install the tool to keep the crankshaft from moving.
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Wednesday, December 7th, 2022 AT 8:07 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,779 POSTS
Hi,

This is a tricky one. What I have done is to remove the transmission inspection plate or the starter and hold the flex plate. To make it a bit more difficult, they want the bolt torqued and then adjusted to degrees. See pic 1 below.

Pic 2 shows the service hall cover. If you remove that or the starter motor, you can prevent the crankshaft from turning.

Let me know if that helps.

Joe.

See pics below.
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Thursday, December 8th, 2022 AT 6:36 PM

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