Jump to content
warmwaffles

Passenger side half shaft dropped

20 posts / 736 viewsLast Reply

Recommended Posts

Well this was. I come to a stop sign at the top of a hill and turn right and accelerate, when I lost all power. Motor was running and responding to the throttle, but no movement.

At first I feared it was the drive shaft, because it happened to me once. Got out of the car and took a look around.

Looks like the bolts on the half shaft backed themselves out and sheared right off. Crazy.

http://i.imgur.com/ycgA7.jpg

Anyone know the bolt sizes? I want to try to get this fixed soon so I can have my baby back.

Share this post


Link to post
Share on other sites

--not sure if you can find 'em at your local hardware store but should be available at an industrial supply place or thru Blunt or other BMW suppliers.

This is not an uncommon occurrance with 2002s--it's happened to me several times over the years. A little locktite on the threads when you replace 'em will be helpful.

cheers

mike

Share this post


Link to post
Share on other sites
--not sure if you can find 'em at your local hardware store but should be available at an industrial supply place or thru Blunt or other BMW suppliers.

I was afraid of this. I was going to go out to our local tractor supply or Ace Hardware and look for some hardened bolts. :(

Share this post


Link to post
Share on other sites

did they back out? Are those the heads right there? Looks like they are flush.

One more possibility to be aware of, thanks for posting.

Scott

ycgA7.jpg

Share this post


Link to post
Share on other sites

Yea, I pulled two bolts out from the wheel side and they were sheared right through. Two of them total. I don't know if more were supposed to be there.

Share this post


Link to post
Share on other sites

Happened to me as well in my 1974 2002, one of the allen bolts backed out, did not shear off; happened about a week after replacing the driver side half shaft; there are 6 in total, 8x60mm, part # should be 07119919989

Tim

Share this post


Link to post
Share on other sites

I once LOST a half shaft at Watkins Glen. 320i diff allowed flange to pull out after wheel-side CV bolts let go. Track workers found it three hours later! That should happen no longer... --Fred '74tii & '69GT3

post-238-13667665728507_thumb.jpg

Share this post


Link to post
Share on other sites

Fred,

Is that safety wire? I had front struts replaced on my '74 Atlantik blue 2002 back in 1985, garage that did the work did not use safety wire upon reinstalling at a certain point; shortly after picking the car up, was within a few days, I was driving with a friend and taking a turn on to a side street, the front end collapsed; car was towed to a collision shop and folks there said garage that did recent front strut work didn't use safety wire; some body work damage that the garage had to cover as well.

Tim

Share this post


Link to post
Share on other sites
--not sure if you can find 'em at your local hardware store but should be available at an industrial supply place or thru Blunt or other BMW suppliers.

This is not an uncommon occurrance with 2002s--it's happened to me several times over the years. A little locktite on the threads when you replace 'em will be helpful.

cheers

mike

Aardvark has the correct ones.

Share this post


Link to post
Share on other sites

REMEMBER: Loctite doesn't stick to GREASE! Clean those bolt holes THOROUGHLY before installing new, correct hardened BMW bolts. Q-Tips and brakleen if required! Same with clutch bolts and flywheel bolts!

55mm for cars with threaded hub/flanges, 60mm for cars that use locknuts on the hub flanges! Always replace locknuts if you have that type!

I paint mark every bolt I install after I've torqued it with blue loctite. That safety wire is a GREAT idea, though I've never personally had them break or loosen on my own cars.

Share this post


Link to post
Share on other sites
REMEMBER: Loctite doesn't stick to GREASE! Clean those bolt holes THOROUGHLY before installing new, correct hardened BMW bolts. Q-Tips and brakleen if required! Same with clutch bolts and flywheel bolts!

I can only imagine the poor soul who found this out the hard way

Share this post


Link to post
Share on other sites
Is that safety wire?

Yes indeed. Made a jig to cross drill the 12.9 bolts. Bummer about your car, strange the three bolts backed out the bottom of your strut, it's like they weren't even tightened. Like any tool, now that I have the safety wire pliers I am finding all kinds of uses for them. --Fred

post-16466-13667665778458_thumb.jpg

Share this post


Link to post
Share on other sites
Happened to me as well in my 1974 2002, one of the allen bolts backed out, did not shear off; happened about a week after replacing the driver side half shaft; there are 6 in total, 8x60mm, part # should be 07119919989

Tim

Any place I can buy these at?

Share this post


Link to post
Share on other sites

A while ago some lengths of the 8mm allen head bolts were not available through BMW. That may have changed. I got mine (along with a bunch of other nuts, bolts and washers) at Universal Metrics. They source globally, so some are made in China. others are not. Here a link to the bolt you are asking about:

http://www.umimetric.com/catalog/00912020-08060

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.




×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.