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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1198
Location: Spain


PostPosted: Sat Jun 02, 2018 6:43 pm    Post subject: Alternator Fan Hub Bearing Reply with quote

Hi All,

Washed the car today and when I started her up there was a bit of a squealing noise from the fan area. Had a good feel around (as you do Very Happy ) and didn't feel any obvious slack/ floating. However, after the car had fully dried off the noise was gone. I'm thinking it might be the alternator fan hub bearing Question I've had a look on the old web and the going price for this piece of simple engineering is £100 plus VAT plus shipping WTF Surprised So my question is, do you concur on the noise issue and second can I just buy the bearing and replace it thus saving myself silly money. ( I'm not trying to be cheap but don't see the £100 plus.

All feed back greatly appreciated Thumb

ATB Smile
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Trantorman
Spa-Francorchamps


Joined: 04 Aug 2008
Posts: 328



PostPosted: Sun Jun 03, 2018 7:39 am    Post subject: Reply with quote

I have done two recently, I think its another one of those age related issues that are going to happen to most of these cars.\
however take off the fan belt sensor, its easy to remove and check the pulley wheel bearing in it, thats often the source of belt related noises and cheaper and much easier than the fan bearing.
 
  
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P-Tek
Newbie


Joined: 23 Oct 2017
Posts: 8
Location: Kent


PostPosted: Sun Jun 03, 2018 5:17 pm    Post subject: Reply with quote

As above you need to isolate the bearing ideally you can use a screwdriver to hold the belt sensor pulley of the belt and see if it goes, check the belts aren’t worn or loose, also have a bearing on the end of the alternator.

I’d suspect belt sensor pulley personally try some wd40 or similar in the pulley seems to quiten them down in my experience
 
  
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Cameltoe & Heel
Suzuka


Joined: 26 Jan 2009
Posts: 1110
Location: Preston - Lancs


PostPosted: Mon Jun 04, 2018 6:56 am    Post subject: Reply with quote

Yes pulley sensor wheel was particularly crusty so needed some tic to get moving nicely, some WD40 and some grease packed in for good measure.

I've also done the bearing Dec, I agree cost is a joke and if you could source the bearing alone then yes why not, a good bearing shop could easily match it up.

Trev
 
  
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Cameltoe & Heel
Suzuka


Joined: 26 Jan 2009
Posts: 1110
Location: Preston - Lancs


PostPosted: Mon Jun 04, 2018 8:44 am    Post subject: Reply with quote

Dec if doing the bearing you'll need a puller like below:




 
  
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king_kenny
Silverstone


Joined: 14 Feb 2008
Posts: 107
Location: Stoke Poges


PostPosted: Mon Jun 04, 2018 10:36 am    Post subject: Reply with quote

I've just done the fan bearing as well, but opted to replace just the bearing... available here for a fraction of the porsche price :-

http://wmtbearings.co.uk/porsche-pulley-bearing-ld1732-2rsr-ah04-supplied-by-wmt-bearings-shrewsbury/
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1198
Location: Spain


PostPosted: Mon Jun 04, 2018 4:05 pm    Post subject: Reply with quote

king_kenny wrote:
I've just done the fan bearing as well, but opted to replace just the bearing... available here for a fraction of the porsche price :-

http://wmtbearings.co.uk/porsche-pulley-bearing-ld1732-2rsr-ah04-supplied-by-wmt-bearings-shrewsbury/


Great thanks for that king kenny just what I was looking for. Read what they said on their site and they have hit the nail right on the head. Will be dropping them an e-mail. Could I ask what you paid for the bearing?

ATB Smile
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1198
Location: Spain


PostPosted: Mon Jun 04, 2018 4:15 pm    Post subject: Reply with quote

Cameltoe & Heel wrote:
Yes pulley sensor wheel was particularly crusty so needed some tic to get moving nicely, some WD40 and some grease packed in for good measure.

I've also done the bearing Dec, I agree cost is a joke and if you could source the bearing alone then yes why not, a good bearing shop could easily match it up.

Trev


Hi Trev,

Thanks for the feedback thanks too to trantorman & P-Tek. I've isolated the pulley and sprayed it with WD40 but after a wash I get the sequel. However after a good run the noise goes Dont know

I'll probably get a bearing just to have In case it does go. I have a bearing for the spoiler drive but have not yet had to use it.

ATB Smile
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Endoman
Suzuka


Joined: 11 Apr 2011
Posts: 1067
Location: Bolton U.K.


PostPosted: Mon Jun 04, 2018 8:50 pm    Post subject: Reply with quote

You could always fit the RS pulley. I less belt, 1 less bearing and no need for the belt sensor +bhp. I've not had any problems with undercharging. The altenator bearing is the original 170kmiles one. I suppose it depends on use I don't winter commute in the 993.
http://www.carnewal.com/products/993/p93119/RS-Pulley
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1198
Location: Spain


PostPosted: Tue Jun 05, 2018 6:10 am    Post subject: Reply with quote

Endoman wrote:
You could always fit the RS pulley. I less belt, 1 less bearing and no need for the belt sensor +bhp. I've not had any problems with undercharging. The altenator bearing is the original 170kmiles one. I suppose it depends on use I don't winter commute in the 993.
http://www.carnewal.com/products/993/p93119/RS-Pulley


Thanks for the advice Endoman much appreciated Thumb however I like to keep my car stock the way it came out of the factory. I even have 16 inch wheels Embarassed

ATB Smile
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1198
Location: Spain


PostPosted: Tue Jun 05, 2018 6:10 am    Post subject: Reply with quote

Endoman wrote:
You could always fit the RS pulley. I less belt, 1 less bearing and no need for the belt sensor +bhp. I've not had any problems with undercharging. The altenator bearing is the original 170kmiles one. I suppose it depends on use I don't winter commute in the 993.
http://www.carnewal.com/products/993/p93119/RS-Pulley


Thanks for the advice Endoman much appreciated Thumb however I like to keep my car stock the way it came out of the factory. I even have 16 inch wheels Embarassed

ATB Smile
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Cameltoe & Heel
Suzuka


Joined: 26 Jan 2009
Posts: 1110
Location: Preston - Lancs


PostPosted: Tue Jun 05, 2018 9:36 am    Post subject: Reply with quote

decgraham wrote:
Endoman wrote:
You could always fit the RS pulley. I less belt, 1 less bearing and no need for the belt sensor +bhp. I've not had any problems with undercharging. The altenator bearing is the original 170kmiles one. I suppose it depends on use I don't winter commute in the 993.
http://www.carnewal.com/products/993/p93119/RS-Pulley


Thanks for the advice Endoman much appreciated Thumb however I like to keep my car stock the way it came out of the factory. I even have 16 inch wheels Embarassed

ATB Smile


Wow and I thought i was old school staying with my 17's Smile, good for you.

Trev
 
  
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king_kenny
Silverstone


Joined: 14 Feb 2008
Posts: 107
Location: Stoke Poges


PostPosted: Tue Jun 12, 2018 1:27 pm    Post subject: Reply with quote

Hi Graham,
I bought one from 123bearings in france with was a total of £33, and then found the same product in the UK for less than £25 which is the link i attached. The bearing is a quality german OEM item in the exact same specification, dual race, sealed. A no brainer in my book, and far for ecological as well.

kk
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1198
Location: Spain


PostPosted: Thu Jun 14, 2018 6:57 am    Post subject: Reply with quote

king_kenny wrote:
Hi Graham,
I bought one from 123bearings in france with was a total of £33, and then found the same product in the UK for less than £25 which is the link i attached. The bearing is a quality german OEM item in the exact same specification, dual race, sealed. A no brainer in my book, and far for ecological as well.

kk


Many thanks kk much appreciated,Thumb £25 is what I call a sensible price, £125ish plus for the whole thing is not !

ATB Smile
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stuttgartmetal
Indianapolis


Joined: 23 Feb 2009
Posts: 2372
Location: Caterham. Surrey


PostPosted: Sun Jun 17, 2018 4:17 pm    Post subject: Reply with quote



Can the fan be removed is situ, while the alternator is still on the car ?
 
  
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Cameltoe & Heel
Suzuka


Joined: 26 Jan 2009
Posts: 1110
Location: Preston - Lancs


PostPosted: Mon Jun 18, 2018 8:55 am    Post subject: Reply with quote

You COULD take it off it situ will a puller, I'm not sure how you would press the items back in however?.

Trev
 
  
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