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Replacing rear wheel bearings
I have to replace the rear wheel bearings on my 87 sometime very soon. I'm stationed out in the middle of nowhere in England and I have to have all my parts on hand before I take it apart. I've looked at the Haynes and there is no doubt I will miss all kinds of seals/parts without taking it down. It also looks like I need to take the control arms off so what else should I replace while its apart? The car has enough miles to warrant replacing any wear items I'll encounter (bushings etc...). Also, has anybody found any tech articles... I havent come across any parts lists or articles on the subject.
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You might want to take it somewhat apart beforehand. I've heard it is best (cheapest) to have emergency brake shoes relined, rather than buying new ones. If yours are thin. Brake pads. I plan to look at these things soon, and I will repack the CV joints while I'm there. Boots might need replacing too.
Someone relently replaced spring plate bushings and eliminated a clunking noise, on cornering, that I may also have. My experience with drivewheel bearings, particularly on cars with CV type axles, is that there are two best methods. You can take the suspension apart and put the hub on a press. Alternatively there are tools that can press the new bearings in without removing the hub. This avoids re-aligning the car but home mechanics usually lack this tool. I've found it worthwhile to have the shop do it, for this reason. Maybe there's something I'm missing though, cuz guys seem to do this in their garage. Finally, I will also tell you that I do not replace wheel bearings unless I think something is wrong. and this is easy to tell, because bad wheel bearings, front or back, make a huge amount of noise. My rear bearings are not making noise, so I'm focused on CV boots and brakes. ------------------ '83 SC |
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There is no doubt in my mind that I have one, (or two) bad bearings
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I recently did the bearings on my 911. I also had the haynes manual. The job can be done easily without having to take the arm off.
1. disconnect the cv shaft 2. use the hand brake and the tire installed to help you keep the rotor from turning when you unscrew the center nut 3. now, you can slide the center shaft off the center of the bearing 4. remove your backing plate and the rotor. No need to remove brake line. Just move it over out of the way and rest it on something high enough as to not bend the brake line. 5. there are 4 bolts that hold the backing plate to the trailing arm. Take those off and remove the this plate 6. RENT a slide hammer aka wheel bearing puller and pop off the bearing. Sometimes easier said than done but this is the method. 7.clean everthing 8.when installing, place bearing on hub first, dont forget the backing plate! 9. as a unit, place and center the bearing onto the arm and tap into place. If its hesitatant,use the 4 bolts to push it in slowly 10. REMEMBER TO TAP THE BEARING IN THE COORECT PLACE OR YOU WILL DESTROY THE BEARING!!!! good luck |
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Thanks, appreciate the help. Sounds like the only buggar will be removing/installing the bearings themselves. The Porsche dealer wanted 406 UK pounds... Around $600. I think I'll give it a whack myself
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Have you checked out Auto Farm? They seem to get lots of press in the 911 and Porsche World mag. That UK publication indicates that there are bunches of DIY enthusiasts in the UK.
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Anyone have information on the bearing removal tool? Do I need the tool offered by Pelican or can a more generic tool (rental) work?
Thanks Doug 84-911-ROW |
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