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Replace harmonic balancer (pulley)

Tiny
STEPHENISOM2
  • MEMBER
  • 2005 CADILLAC CTS-V
  • 5.7L
  • V8
  • 2WD
  • MANUAL
  • 140,000 MILES
The harmonic balancer (pulley) spun loose from the nose of the crank! They no longer use a key and keyway design for the pulley, and I need to know the proper procedure for replacing the pulley!
Wednesday, June 8th, 2022 AT 10:35 AM

2 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

On this vehicle you need to mark and note the position of the harmonic balancer before removal.
Did the complete pulley come off or did the hub stay on the shaft?
Unfortunately, the manual does not provide the scenario for the replacement when the pulley is off without any markings.

https://www.2carpros.com/articles/how-a-harmonic-balancer-works

I have attached diagrams below for your reference.

Let me know of any questions.
Thank you.
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Wednesday, June 8th, 2022 AT 2:48 PM
Tiny
STEPHENISOM2
  • MEMBER
  • 2 POSTS
Hi Sean, thank you for this information, but I was also hoping to find out the torque sequence or procedure!
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Thursday, June 9th, 2022 AT 6:13 PM

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