Belt keeps breaking

Tiny
JOSHUAFENDER755
  • MEMBER
  • 2007 BMW 335
  • 3.0L
  • 6 CYL
  • TURBO
  • 2WD
  • MANUAL
  • 130,000 MILES
Replaced belt and belt tension-er both were one month old and the belt broke again. This is a major problem with this type of vehicle as it tends to push past the crankshaft seal and into the timing chain. Please help before it gets really costly.
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Monday, August 7th, 2017 AT 9:40 PM

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Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,544 POSTS
Hello,

Something must be locking up or very hard to turn. I would remove the belt and spin each accessory by hand to see if you can find the problem.

Here is a video to show you what I am talking about.

https://youtu.be/gblcSbyGgv4

Please let us know what you find.

Cheers, Ken
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Thursday, August 10th, 2017 AT 10:45 AM

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