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Rear Hub Lessons
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Posted by Doug W [Email] (#2371) [Profile/Gallery] (more from Doug W) on Thu, 15 Nov 2012 21:38:29 Share Post by Email
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I just did the right rear hub on my wife's 9-5. Here are some lessons learned:

1) Follow the WIS instructions. There is no need to swing the upper suspension member out of the way.
2) There are TWO nuts on the front studs. The outer two are to retain the bracket for the brake line and ABS cable.
3) You'll need a "mid-deep" socket to loosen the upper front nuts. A deep socket is too long and will run into the upper suspension member.
4) All nuts require you use a "wiggler" or "wobble" extension to get ample purchase on the nut flats by fully seating the socket.
5) No need to soak the studs in PBlaster or Kroil. They're coated. Caveat - The nuts are the mechanically locking type and offer resistance ALL the way off. Some older cars from the rust belt may need penetrating oil.
6) The hub may be corroded to the brake dust shield and e-brake. To break this free, put the caliper frame bolts back in the e-brake plate, disconnect the spring and e-brake cable; and clamp the whole business in a vise. Use an air hammer to apply impact load to the studs on the hub assembly.
7) Clean all mating surfaces of rust and then apply anti-seize prior to reassembly.
8) Now is the time to install shims.
9) Be very careful installing the screw for the e-brake cable bracket back into the trailing arm. It's VERY easy to cross thread - and break the bolt - ask me how I know this.
10) When the ignition is first turned on after this procedure, you may get the dash warning lights and chime. Driving about 300' at 15 mph will make the lights go out. If they don't you have more serious problems.

This isn't a bad job. It took me about 2 hours start to finish except for the bolt I broke. Reworking the threaded hole added another hour. I've heard horror stories of this job taking five hours. Only if you don't read the WIS. I had an advantage - access to a lift (ramp) and air tools.

The car runs great. No more roaring noise, and the ABS, Brake, and EPS lights are dark again!

posted by 75.38.240...

_______________________________________ '04 Aero Sport Kombi, BSR '03 Aero 5Spd, Krona, 290 bhp Sold: '03 Linear 5 spd. Krona Mods, 350 bhp

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