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.
Monday, August 7th, 2017 AT 9:40 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 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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