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Noisy Generator

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sander288 "Bolt-on Master"

1,404 posts · joined Aug 2008 ·

#720736
G'day All

I installed new gen. brushes yesterday, and now I have a noisy generator, to make sure I did take off the fan belt and it was the gen, reading the idiot book it says that it is the gen. bearings.

What I wanted to know is how hard is it to replace the bearings, and secondly if it is left for a month or so will anyhthing bad happen, because the car is still charging and runs fine.

Cheers
BMW R65 LS
1967 1300 Deluxe
Swing-axles FTW ❗

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#720739
Hi

What sort of noise is it?

They are not that hard to change.

There isn't a rag or leaf in the fan, they can make a horrible sound like bearings.

Steve

h fractals - an ever changing lifestyle

7,671 posts · joined Feb 2005 ·

#720740
hey
leaf above or some crap in it maybe worth a look first
if the sound wasn't there before you changed the brushes get a screwdriver or alike n as the motor is running get the tool n push down on the brushes n it may bed them in n the noise may magically disappear
i have done this trick several times over the years
but if no joy bearings maybe buggered..
also did you put the genny back on as you found it nice n square etc to its mount??
see how you go
cheers h
fractal geometry; the inner most limits of mind altering abuse

Fantasy http://seventhchronicle.com

Z = Z2 + C1/r = 1/0 = infinity

Barrels www.barrelman.com.au

VW Workshop - aircooledgarage.com.au
allcooled.com.au

greedy53 Bishop of Volkswagenism

3,062 posts · joined Mar 2006 ·

#720750
try the old trick of with the car running push and pull the top of the shroud see if it stopes or gets worse
👍👍😂🙅🥷😬🤓

sander288 "Bolt-on Master"

1,404 posts · joined Aug 2008 ·

#720780
1303Steve wrote:Hi

What sort of noise is it?

They are not that hard to change.

There isn't a rag or leaf in the fan, they can make a horrible sound like bearings.

Steve
The noise comes on with higher revs, and is like a wrring noise, thats the best I can describe it, it's kind of like have a tuned exhaust when driving with a droaning type noise, but i'll check for a leaf and try bedding the brushes in...
BMW R65 LS
1967 1300 Deluxe
Swing-axles FTW ❗

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#720823
sander288 wrote:G'day All

I installed new gen. brushes yesterday, and now I have a noisy generator, to make sure I did take off the fan belt and it was the gen, reading the idiot book it says that it is the gen. bearings.

What I wanted to know is how hard is it to replace the bearings, and secondly if it is left for a month or so will anyhthing bad happen, because the car is still charging and runs fine.

Cheers
Hi
If the generator bearings are dry and noisy...
they can and probably will seize at some point ...
which will stop the fan and stop You driving....

take the belt off and spin the generator and see if it is the bearings...
maybe the New brushes bedding in....??

LEE
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

h fractals - an ever changing lifestyle

7,671 posts · joined Feb 2005 ·

#720920
also is the fan mounted in square or some of the fins in the fan missing bent etc maybe playing havoc also..
fractal geometry; the inner most limits of mind altering abuse

Fantasy http://seventhchronicle.com

Z = Z2 + C1/r = 1/0 = infinity

Barrels www.barrelman.com.au

VW Workshop - aircooledgarage.com.au
allcooled.com.au

sander288 "Bolt-on Master"

1,404 posts · joined Aug 2008 ·

#720942
Made sure the brushes were bedded in, it seems to of gotten rid of the sound, the car is due for a good service with a proper VW mechanic so i'll get them to check it out for me anyway...
BMW R65 LS
1967 1300 Deluxe
Swing-axles FTW ❗

h fractals - an ever changing lifestyle

7,671 posts · joined Feb 2005 ·

#720967
whoo hoo thats good news..
fractal geometry; the inner most limits of mind altering abuse

Fantasy http://seventhchronicle.com

Z = Z2 + C1/r = 1/0 = infinity

Barrels www.barrelman.com.au

VW Workshop - aircooledgarage.com.au
allcooled.com.au