SPONSORED LINKS

Twisted drive shaft

Tiny
JIMMY CRUTCHFIELD
  • MEMBER
  • 2002 CHEVROLET 2500
  • 6.6L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 280,000 MILES
I was on the highway and all of a sudden heard a loud noise. After inspecting, my driveshaft had twisted and broke carrier bearing and pulled from transfer case. Truck would roll freely still as I was on a hill and in park truck would roll back. Let me add driveshaft and carrier bearing were brand new. My mechanic said the rear end locked up but my truck still rolled freely. What do you think could have caused this to happen? Truck is stock and was not doing anything excessive when happened.
SPONSORED LINKS
Friday, November 27th, 2020 AT 6:01 PM

3 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
I suspect the bearings locked up and caused the rear end to lock up and the drive shaft is the weakest part so it broke. As for still free rolling, I bet the gears or axles broke as well so the tires can still spin but even if you put a new drive shaft in it, you will not have any movement as the rear end has failed.

If the rear end was just rebuilt, I would take it back as they most likely did not set the backlash, pinion preload, or pinion depth correct. I would be asking they correct this if you paid them to rebuild it.

I attached a picture of the rear end. More then likely umber 7, 9, or 12 is the issue. Let me know what questions you have. Thanks
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, November 27th, 2020 AT 7:28 PM
Tiny
JIMMY CRUTCHFIELD
  • MEMBER
  • 2 POSTS
Thank you for your input. That makes more since now about wheels still spinning. I was doing 75 or so when it happened. Rear end was rebuilt. The drive shaft and center bearing was brand new.
Images (Click to make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Friday, November 27th, 2020 AT 7:33 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Yep. Seen that before. This is caused by the truck moving and the rear end suddenly stops but the inertia of the truck is too much and it just snaps the weakest part which is the drive shaft. So I fully expect that the rear end was not set up correctly and it locked up but the truck going 75 caused this damage rather then just stopping.
Was this
answer
helpful?
Yes
No
Saturday, November 28th, 2020 AT 5:21 PM

Please login or register to post a reply.

Sponsored links