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Wheel Bearings

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C2YLO
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C2YLO Guest of the Club
2007/01/27 20:02:27 (permalink)

Wheel Bearings

Advice sought please. I suspect that one of my rear wheel bearings is on the way out due to the whirring noise eminating from the rear whilst driving. having checked the price of original replacements from Porsche I found them to be fairly reasonable. BUT, after contacting a local-ish independant I found the labour charge to be £300 per side. Does anyone have first hand knowledge of the complexity of changing these bearings? Are special pullers and presses required? I'm assuming the £300 equates to 5hrs at £60 an hour which indicates some degree of difficulty. 

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angry
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angry Guest of the Club
RE: Wheel Bearings 2007/01/27 21:17:21 (permalink)
If you know or can find a mechanic with a press to push the bearing out you could have it done a lot cheaper.
Some mechanics have a engineering background and these ones dont have any difficulties changing bearings as more damage can be done by pushing the new bearing in.
If you are based any where near north london/enfield i know a chap who will not have a problem and will not charge any where near that.
Dan
fergusond
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RE: Wheel Bearings 2007/01/27 23:11:15 (permalink)
if you look on the the 'p-car.com' site there are many articles for DIY maintenance including the rear wheel bearing, looks easy!
 
good luck
 
David
MoC2S
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RE: Wheel Bearings 2007/01/28 18:52:16 (permalink)
Yes, David, looks easy, but there is some expense in the tools .. I'd be checking with an OPC for realistic pricing. Indies often have cheaper labour rates but can take longer to do the job if they don't have the specialist tools ...
 
Now I expect a flood of recommendations for the Supplier's List ...
 
cheers, Maurice

Maurice Piper
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C2YLO
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RE: Wheel Bearings 2007/01/30 12:48:32 (permalink)
Thanks for the advice so far. I will be check P-car etc to assess the tool requirement situation and maybe a couple of other indes and an OPC for good measure.
 
I'll post the findings as sson as I get chance to do the research.
 
Cliff

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John Maddox
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RE: Wheel Bearings 2007/01/31 08:32:06 (permalink)
Are you sure it's not the rear tyres. Some makes have a tendancy to produce rumble identical to bearing noise in the last 1000 miles of life.
 
Seriously this is worth checking out first.

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MoC2S
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RE: Wheel Bearings 2007/01/31 14:41:21 (permalink)
Very true, John .. Assimetricos are very prone to this !
 
cheers, Maurice

Maurice Piper
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frogs eyes
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Re: RE: Wheel Bearings 2020/03/22 19:14:39 (permalink)
I have a bit of whirring, or scuffing, on one side of the rear end. It seems to increase in sync with the forward motion and wheel revs. It doesn't seem to be the brakes binding or anything like that. I'm hoping it's a wheel bearing and dreading a gearbox or drive shaft problem. I have a friend who can lift the car, and wheels, off the ground allowing him to spin the wheels freely in the hope of narrowing down the noise to a particular area. Any helpful hints or tips, or other problem areas, whilst doing this would be gratefully received.   2007 Cayman 987 2.7cc. 57K miles.
 
post edited by frogs eyes - 2020/03/22 23:47:56
MoC2S
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Re: RE: Wheel Bearings 2020/03/23 13:38:18 (permalink)
Forwarded to Cayman Register Secretary .. I wonder who might reply ??
 
cheers, Maurice

Maurice Piper
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Buddy
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Re: RE: Wheel Bearings 2020/03/26 13:24:03 (permalink)
I've looked at the PET Diagram and the bearing assembly is straight forward, it is normally removed using a vertical press and so needs to be removed from the vehicle for this although on other Porsches I have known them to be removed using a specially made to fit pressing tool. But you have to know that it will fit correctly and be sufficiently strong to do the job. They are tight but if you try you will invent your own vocabulary.
I would suggest that you raise the car and make sure that it  is well supported then rotate the wheel while listening from both sides for rumbles and knocks, then if you wish to proceed further you can remove the drive shaft.
The drive shaft, is relatively easy to remove looking at the diagram as it looks much the same as the 944 turbo one that I changed some years ago, I cannot say enough that it must be supported securely and front wheels chocked as you will be underneath it during this task, undo the flange bolts at each end slide it from engagement and lower it out, it could be that there is a knock in one of the CV joints, this will disconnect the wheel bearing, you can then at least rotate the bearing for rotating checks and check the shaft for play, don't worry too much about a little play in the diff' they do have some clearance but with the box in neutral and the other wheel secured somehow the diff' can be rotated to see if it rotates smoothly.

Kevan
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pse_SC
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Re: RE: Wheel Bearings 2020/03/26 15:38:56 (permalink)
Might not necessarily be a wheel bearing... maybe a a UJ breaking down, but would be advisable to inspect or get it inspected properly first before taking things apart 

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frogs eyes
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frogs eyes Guest of the Club
Re: RE: Wheel Bearings 2020/03/26 16:54:42 (permalink)
Thank you so much for the information in your post.
A competent friend is lifting it on Friday, as you advised, and I will print out your post
for added clarity.
 
 
frogs eyes
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Re: RE: Wheel Bearings 2020/03/26 16:59:43 (permalink)
Thank you, I will certainly check the Universal Joints. 
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