Notices
Modified JK Tech Tech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail.

PLEASE DO NOT START SHOW & TELL TYPE THREADS IN THIS FORUM

drive shaft failure

Thread Tools
 
Old 01-09-2010, 12:30 PM
  #1  
JK Enthusiast
Thread Starter
 
guinnessisgood's Avatar
 
Join Date: Feb 2008
Location: Joplin, MO
Posts: 153
Likes: 0
Received 0 Likes on 0 Posts
Default drive shaft failure

I have a 2 door 08, manual transmission, with a 2.5 inch suspension lift.

So it has gotten cold and on very cold days in the mornings I notice a ratcheting sound. So I called the dealer since its under warranty and they are having me bring it in. Anyway I was wondering if anyone else has had their driveshafts fail at this point in the shaft. It isnt the boot as it is fine, but you can see from the picture where the grease is flinging from. Has anyone else had this issue specifically? Was it under warranty and did the dealer fix it for you?


Front
[IMG][/IMG]

Rear
[IMG][/IMG]

Also, I have visually inspected the rest of the shaft. These points right by the transmission are the only parts that show any grease leakage or damage. Everything else on the shaft looks good.
Old 01-09-2010, 04:03 PM
  #2  
JK Newbie
 
Eugene the jeep's Avatar
 
Join Date: Dec 2007
Location: Denver, CO.
Posts: 79
Likes: 0
Received 0 Likes on 0 Posts
Default

Same thing, torn boot, grease, etc. Whole shaft gets replaced, they are about 4 bills, but my dealer swapped mine under warranty. I think the cold helps that boot fail, since it is under so much angular stress from the lift...i had 22k on mine when it went.
Old 01-09-2010, 04:51 PM
  #3  
JK Junkie
 
AlmightyCrash's Avatar
 
Join Date: Jul 2008
Location: Tyler, TX
Posts: 2,523
Likes: 0
Received 0 Likes on 0 Posts
Default

Mine went early, destroyed my transmission.
Dealer said lift caused it.
No warranty.
Old 01-09-2010, 06:13 PM
  #4  
JK Enthusiast
 
benny's Avatar
 
Join Date: Sep 2007
Location: Arkansas
Posts: 485
Likes: 0
Received 1 Like on 1 Post
Default

I would not think a 2.5 inch lift would put enough stress on it to cause that,even on the shorter wheelbase.
I beleive you would have to go 3 inches or above to start causing stress related failures.
Old 01-09-2010, 08:35 PM
  #5  
JK Freak
 
JCKnauer22's Avatar
 
Join Date: Aug 2008
Location: Middle River, MD
Posts: 686
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by benny
I would not think a 2.5 inch lift would put enough stress on it to cause that,even on the shorter wheelbase.
I beleive you would have to go 3 inches or above to start causing stress related failures.
but was it a coil lift or a BB using pucks? coils could give the extra 1/2" to make it 3". especially on a 2dr. i don't think it's too far out of the realm of possibility. stranger things have happened
Old 01-09-2010, 09:33 PM
  #6  
JK Junkie
 
adamisadam's Avatar
 
Join Date: Nov 2008
Location: Long Island, NY
Posts: 2,498
Likes: 0
Received 5 Likes on 5 Posts
Default

I could certainly see them claiming the lift causing the DS failure. what scares me more is if I go aftermarket DS & later have a problem with transfer case or diffs going, will they blame lift and aftermarket DS? so much for my lifetime warranty!
Old 01-10-2010, 08:21 PM
  #7  
JK Enthusiast
Thread Starter
 
guinnessisgood's Avatar
 
Join Date: Feb 2008
Location: Joplin, MO
Posts: 153
Likes: 0
Received 0 Likes on 0 Posts
Default

I honestly expect my dealer to tell me it is caused from the lift and not under warranty. As far as the warranty goes I am beginning to think all it will ever cover lifetime is the engine. Everything else will be caused by modifications and 'not covered any longer'.

I do have a coil lift and I think it is closer to 3 inches instead of 2.5. My surprise was that the outer boot was not ripped by the exhaust, but instead the DS failed from angle. I was even more surprised to see that its the front axle with the real amounts of grease coming out. I use it as my DD and probably go wheeling 8 times a year. I would consider myself a moderate wheeler. So losing the front DS is a surprise for me...

Thanks for the info guys.
Old 01-10-2010, 08:25 PM
  #8  
JK-Forum Founder
 
wayoflife's Avatar
 
Join Date: Jul 2006
Location: Laguna Niguel, CA
Posts: 36,534
Likes: 0
Received 16 Likes on 15 Posts
Default

unfortunately, the CV boot failure is common on rear drive shafts on 2-doors with a 3" lift. the lift causes the boots to be in a constant state of pinch and over time, it will tear. once torn, you should be able to drive for a bit longer but once the bearing start to dry up, you will hear a ratcheting sound and then it's game over. sorry to be the bearer of bad news but, this one really is a lift related failure.
Old 01-11-2010, 03:40 AM
  #9  
JK Enthusiast
 
greengiant's Avatar
 
Join Date: Mar 2008
Location: Indiana
Posts: 266
Likes: 0
Received 0 Likes on 0 Posts
Default

Mine did that too. the dealership replaced my front shaft for me under warranty...said they couldnt prove the lift did or did not fail the boot.
Old 01-11-2010, 03:48 AM
  #10  
JK Newbie
 
Bling's Avatar
 
Join Date: Nov 2009
Location: Nanjemoy, MD
Posts: 49
Likes: 0
Received 0 Likes on 0 Posts
Default

Jp magazine, Four wheeler, et al have reported on the JK shafts failing when lifted... Most of the articles refer to the shafts as "ticking Time Bombs" and failure has to do with operating angle, not stress caused by wheeling. Replace the shaft with a quality aftermarket unit like a Woody or RE and call it done.


Quick Reply: drive shaft failure



All times are GMT -8. The time now is 10:20 PM.