TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Duc750 on August 24, 2011, 08:03:38 AM
Title: Alternator noise
Post by: Duc750 on August 24, 2011, 08:03:38 AM
Hi Guys
Its time for me to call on the assembled knowledge of the forum - I've got a noisy alternator and/or alternator drive.
If its the alternator bearings - I'm reasonably comfortable I can replace them no problems but if its the drive thats noisy what can I do about that ?
ANyone got a decent diagram of how it all fits together ? the Clymer isn't exactly clear
Cheers
Andy
Title: Re: Alternator noise
Post by: frankenduck on August 24, 2011, 08:10:54 AM
It's most likely that yer "monkey-nutz" (rubber alternator bushings) are worn and need to be replaced.
#9 - you need three - part number varies by year and model
(http://www.realoem.com/bmw/diagrams/f/z/1.png)
Title: Re: Alternator noise
Post by: Rick G on August 24, 2011, 10:13:18 AM
If it is the monkey nutz when you get new ones put a tiny dab of super glue on each one to fasten them in place in the drive section on the alternator as it makes the job a heap easier. Also the outside of the thingy you put the nutz in has a mark on the outside corresponding with the position of the gaps to mate with the engine part.
Title: Re: Alternator noise
Post by: frankenduck on August 24, 2011, 10:17:02 AM
I have an extra driving dog so what I do is put some silicone/RTV on the backs of them, insert the driving dog and let it sit for a little while for the adhesive cures. It also makes installation easier if you Armor-All them (or use another lubricant) where the centers of them slide over the vanes of the driving dog.
Title: Re: Alternator noise
Post by: Phil Marvin on August 24, 2011, 07:34:17 PM
Hi, Andy, If the "monkey nutz" are bad, there's a chance the drive cup (#7 in Duck's picture) also is bad with the drive vanes broken. That's how it was when I replaced the monkey nutz on my (sold almost 2 years ago) '95 K75RT. The monkey nutz are the same part number (I think), but the drive cup is different for the 460 watt alternator vs the 700 watt alternator.