

| Subject: | Re: Alternator Vibration |
| From: | Bruce Todd |
| Date: | Tue, 2 Jun 2020 19:45:08 -0700 |
Thanks Dennis - when I get around to changing the oil I will closely inspect around the alternator and the mounting / adjustment bolts. I believe the belt is tight with minimal deflection with minimal bounce. Not sure whether the alternator - which has 9000 miles on it, is a rebuild or not - it is a Bosch if that means anything these days. BT On Tue, Jun 2, 2020 at 5:44 PM Dennis Haynes <d23haynes57@hotmail.com> wrote: > There are a number of things that cause the alternators to vibrate and the > brackets to fail. The GoWesty kits are great except I don't like that cheap > bolt they use for the base hinge. > The alternators themselves often have the rear bearings or the bearing > support fail and this can set up a bad vibration. Many rebuilds have cheap > rotors that are not balanced. Keep in mind the alternator spins about 2.5 > time the engine speed. > > Many folks don't properly tighten the lower swivel bolt-nut. If you can > adjust the belt without loosening this it is too lose. Being lose here > causes movement under load which will wear the housing and eventually > allow the movement and vibration to get worse. > Then there is the fear of overtightening the belt. A loose belt will set > up all sorts of vibrations to the alternator pulley. Rev the engine. The > belt bounce should be minimal. If it is bouncing violently those forces are > going into the alternator. > Last of course is the belt quality. Originally this was a "special" belt > design to operate at high tension. I'm trying to find something that really > works. > > Dennis > > > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf > Of John Goubeaux > Sent: Tuesday, June 2, 2020 6:18 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: Alternator Vibration > > And here's the link to the post I mentioned, which talks about using both > of the GoWesty Brackets to reinforce the weak original factory mounting > method: > > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.thesamba.com%2Fvw%2Fforum%2Fviewtopic.php%3Ft%3D718142%26postdays%3D0%26postorder%3Dasc%26highlight%3Dalternator%2Bbracket%2Bstuds%26start%3D0&data=02%7C01%7C%7C3dedfa0e9651458909bf08d80742e6dc%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637267331208667155&sdata=qJbJpI4jdGDbS1P9qqL%2FuoNYCqILRej8xp63WzaiBqw%3D&reserved=0 > > On 6/2/2020 2:51 PM, Bruce Todd wrote: > > I love this list! - thanks Stuart - I will add it to my wish list. > > > > Bruce > > > > On Tue, Jun 2, 2020 at 1:28 PM <stuartmacm@gmail.com > > <mailto:stuartmacm@gmail.com>> wrote: > > > > Go Westy has a couple of options here: > > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.gowesty.com%2Fsearch-results.php%3Fsearch_phrase%3Dalternator&data=02%7C01%7C%7C3dedfa0e9651458909bf08d80742e6dc%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637267331208667155&sdata=If%2BSRygSL%2FJwnHVdGvCUnHdLDOpA3pyJY8sT69aRQA0%3D&reserved=0 > > one is in stock. > > > > Stuart > > > > -----Original Message----- > > From: Vanagon Mailing List <vanagon@gerry.vanagon.com > > <mailto:vanagon@gerry.vanagon.com>> On Behalf Of John Goubeaux > > Sent: Tuesday, June 2, 2020 12:46 PM > > To: vanagon@GERRY.VANAGON.COM <mailto:vanagon@GERRY.VANAGON.COM> > > Subject: Alternator Vibration > > > > Bruce, I can attest to what can happen, if/when the alternator > > vibrates and loosens or breaks the studs & bracket holding it to > > the case. It's a bad design and can be improved. > > > > There is a good thread on thesamba that I contributed to, when I > > had to extract broken off studs in my case caused by a worn and > > vibrating alternator. I'll see IF I can find it. > > > > My recommendation is address it before it causes real damage ! > > > > my two cents. > > > > -john > > > > On 6/2/2020 12:19 PM, Bruce Todd wrote > > > As well - I have been meaning to ask about alternator play or > > > vibration. I am curious if other 2.1 Vanagons typically have > > > noticeable vibratory movement from the motor which is passed > > along to > > > the alternator? There have been a number of mechanics over time > > that > > > have peered in the engine bay while the motor has idled and have > > never > > > mentioned a problem. Just curious to see if this is a standard > > fare? > > > > > > Thanks, > > > > > > Bruce > > > > > > 86 Westy Syncro > > >
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