Scottjeffrey

Alternator bolt in support bracket.

12 posts in this topic Last Reply

Recommended Posts

I am having a hard time believing that I am at a bit of a loss. In order to remove my alternator I ended up having to remove the alternator with the engine mounting 'bracket' as I couldn't get the bolt out. Well I have heated it and I have pounded on it since I have the assembly off the car but no luck. I don't even understand what it is 'hung up' on. Any suggestions Gents?

Before I buy a used one I found for $35 I thought I would ask. I'm mounting a new alternator so with a new bracket I'd be set, but out $35 beans and its a mechanical defeat!

Best Regards,

Scott

Share this post


Link to post
Share on other sites

It is probably rusted solid to the metal sleeve that runs through the alternator mounting hole.  You might try soaking/heating/pounding some more to break it free.

Share this post


Link to post
Share on other sites

Hal has probably hit on it...IIRC the rubber mounting grommet is held in place with a pair of C-clips; remove the clips and take bolt and grommet out as an assembly.  Then you'll be able to chuck it in a vise for better leverage, and if necessary you can simply cut the offending bolt and replace it with another one. 

 

Also suggest replacing those rubber grommets with urethane ones--the rubber ones turn into black goo in a few years; this'll cause the alternator pulley not to be parallel with the other pulleys, causing accelerated belt wear and eventual failure.  

 

mike

Share this post


Link to post
Share on other sites

Soak it with penetrating oil  while turning the bolt and then try putting a socket thats several times bigger than the bolt head over the head and use a c clamp to force the bolt into the socket, with the bolt under tension a good wack with a hammer might be in order, once you get it to move it should come out

Share this post


Link to post
Share on other sites
20 minutes ago, mike said:

.IIRC the rubber mounting grommet is held in place with a pair of C-clips

 

Exactly, the bushings and the metal sleeve are retained by a C-clip.  I think Scott's issue is that he can't even remove the bolt going through the sleeve so he can remove the alternator bracket to access the bushings/sleeve. 

 

24 minutes ago, mike said:

Also suggest replacing those rubber grommets with urethane ones--the rubber ones turn into black goo in a few years

 

Definitely recommend this also.  That black goo is a pain to deal with.  

20181206_115055.jpg

20181206_115144.jpg

Share this post


Link to post
Share on other sites

Soak the whole thing (pivot)  in ATF and Acetone at 50% each.

 

It should creep into the space between the sleeve and the bolt.

 

I go against the grain here on the type of bushings as I have had nothing but trouble...over the long term.....with the urethane. They all have disintegrated in chunks on me......If you look in the parts books there are two densities; IIRC you get the 90 Shore bushings. or whatever has the highest number.  Some thought the white Bosch bushings were the thing, but I think they are NLA and the 90 Shore is the same from BMW.

  • Like 1

Share this post


Link to post
Share on other sites
1 minute ago, Einspritz said:

Soak the whole thing (pivot)  in ATF and Acetone at 50% each.

 

This does work as well as any of the commercial products.  You can also use power steering fluid, close to the same lubricant.

I mix these in a refillable pressurized spray bottle and use it on any seized joint.

Pressurized Spray Bottle.JPG

  • Like 1

Share this post


Link to post
Share on other sites

It’s a common problem and after many rounds of penetrating oil, heat, clamps and hammers mine still would not budge.  I finally broke out the sawzall and cut the bolt/bushing between the bracket and alternator.  If you go the same route or a new bracket you will need a new bushing like this https://blunttech.com/products/9848299  .  

 

My cut bushing is between the bolt and bracket and shows how tight the bolt fits in the bushing.  It now resides somewhere in the woods an angry throws distance from my garage.

39913EC6-4D1D-4625-A70E-4052CA72E8A9.jpeg

  • Like 2

Share this post


Link to post
Share on other sites

Throw the whole thing in the "neighbor's swimming pool", get a bracket and alternator from an e30 318i and call it a day :-)

  • Haha 1

Share this post


Link to post
Share on other sites

Geez guys knock it off....

 

More stuff to get out of my pool... getting tired of fetching smog harnesses, carbon canisters, external voltage regulators, diving board bumpers, vapor retrieval canisters etc out of my doughboy.....

 

Cheers!...

  • Haha 2

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now