BMW K bikes (Bricks)

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1Back to top Go down   alternator noise/rubbers Empty alternator noise/rubbers on Mon Dec 28, 2020 10:15 am

75ac

75ac
New member
New member
good afternoon to all, i hope everybody has had a good and safe xmas.

could i ask for a little advice for my K75s?

after reading various posts about a noise from the r/h side of the engine (on various models) i decided to check out the alternator drive rubbers. hopefully i have posted a picture of the rubbers below. there is debris in the drive cup and the rubbers look worn, am i correct?

also whilst checking the alternator i noticed if i pulled and pushed the drive cup there was a minimal movement but a squeak. there is no noise when just spinning the cup. any suggestions would be appreciated.



alternator noise/rubbers K75rub11

    

2Back to top Go down   alternator noise/rubbers Empty Re: alternator noise/rubbers on Mon Dec 28, 2020 10:26 am

Dai

Dai
Life time member
Life time member
Those rubbers don't look too bad to me. As for the squeak: check the securing nut at the bottom of the cup. If that's tight, then there's two bearings inside the alternator. IIRC one is secured in place with a plate (the top/front one?) and the other is an interference fit. I can't see either of those being responsible for the noise, but if the securing plate had worked loose? Anyone? It's not a problem I've had.


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1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

75ac

75ac
New member
New member
thanks for the response, think i'll take it into work ( HGV workshop) and see if one of the techs can take it apart so the bearings can be replaced while its out of the bike.

    

4Back to top Go down   alternator noise/rubbers Empty Re: alternator noise/rubbers on Mon Dec 28, 2020 6:01 pm

Arlina

Arlina
Moderator
Moderator
Axial movement is no big problem, radial movement is....


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alternator noise/rubbers Eu-log10  K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde - K75LT project
    

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