humming noise from engine.... genny bearings?

Anthiron The Baja Rejuvenation Begins

4,936 posts · joined Oct 2003 · 2 Apr 2008, 9:49 pm

#639515

started hearing a humming sort of bearing noise from my engine today. sounds to me like the genny bearings must be on their way out.

if thats the case what are the options?

Nicko

62/60 model bug eye baja bug, (Full Build in Progress)
1974 Chevrolet Luv
1970 MK2 Ford Cortina GT
1979 Yamaha RX125 Two Stroke tracker project.
2004 Harley Davidson Sportster XL Custom

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 · 2 Apr 2008, 9:52 pm

#639517

Hi

Have careful feel around the fan blades, rags or leaves often get stuck in there and make bearing sounds.

Steve

pod i`ve got to finish this thing one day

4,980 posts · joined Dec 2003 · 2 Apr 2008, 9:53 pm

#639518

another genny, less tension on belt ??

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Anthiron The Baja Rejuvenation Begins

4,936 posts · joined Oct 2003 · 2 Apr 2008, 9:56 pm

#639520

i have a screen coving my air intake so theres no sticks of leaves in there. the noise seems to come and go as it pleases. i loosend the belt one thin shim and then started the engine and no noise but id been running that belt tension for quite a few months before the sound developed

62/60 model bug eye baja bug, (Full Build in Progress)
1974 Chevrolet Luv
1970 MK2 Ford Cortina GT
1979 Yamaha RX125 Two Stroke tracker project.
2004 Harley Davidson Sportster XL Custom

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

11,654 posts · joined Aug 2002 · 2 Apr 2008, 10:23 pm

#639529

You can pickup used generators pretty cheap...

freight is a killer if they aren't local..

the bearings in the generator are common and shouldn't be expensive..

if the bearings are dry [no grease] they will eventually
fail and either fall to bits
or seize up and stop the generator..

Lee

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

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 · 3 Apr 2008, 6:04 am

#639541

It could also be the pully loose is there a lot of dust on the pully

I read it on FACEBOOK so it must be true

http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630

http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099

http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603

http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

matara Custom Title Time!

1,342 posts · joined Aug 2002 · 3 Apr 2008, 6:39 am

#639542

Take the belt off the car and start the engine. If the noise has gone its your belt/genny. I had a noise like this that would go when I revved the engine. In the end it was the butterfly shafts on the carb were worn and letting air in causing a wierd sound.

You can actually buy new bearings and replace them, but a new/replacement genny is an easier option.

Cheers

Steve

Anthiron The Baja Rejuvenation Begins

4,936 posts · joined Oct 2003 · 3 Apr 2008, 8:07 am

#639555

genny belt is clean and free of dust, i tried tightening the pully first but that seemed to make it worse so i loosened it off.

yeah i think ill just buy an alternator kit.

62/60 model bug eye baja bug, (Full Build in Progress)
1974 Chevrolet Luv
1970 MK2 Ford Cortina GT
1979 Yamaha RX125 Two Stroke tracker project.
2004 Harley Davidson Sportster XL Custom

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

11,654 posts · joined Aug 2002 · 3 Apr 2008, 10:09 pm

#639654

Yes, an alternator is the way to go...

don't forget to get an alternator belt

11.3 x 912mm

part number 111 903 137E

Lee

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