Replacing Rear Shock - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 03-18-2010, 08:06 PM
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Replacing Rear Shock

1990 325ic and the rear left shock piston snapped off just above the shock tube. Kids car and I am going to replace the shock, I have the Bentley and Haynes manuals and both indicate that I need to unscrew the nuts on left and right side of shock mount (not the center nut). What is unique about this arrangement, why can't I simply unscrew the center nut and drop the shock piston out? If I do have to remove the support bracket nuts, when does the center nut come off and go on again?
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#2 (permalink) Old 03-18-2010, 11:13 PM
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Originally Posted by Bear View Post
1990 325ic and the rear left shock piston snapped off just above the shock tube. Kids car and I am going to replace the shock, I have the Bentley and Haynes manuals and both indicate that I need to unscrew the nuts on left and right side of shock mount (not the center nut). What is unique about this arrangement, why can't I simply unscrew the center nut and drop the shock piston out? If I do have to remove the support bracket nuts, when does the center nut come off and go on again?
They recommend you replace the shock mounts too, inspect them when have them out, also the shock piston will free spin........while they are in the car.


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#3 (permalink) Old 03-19-2010, 01:00 AM
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It's alot easier to remove the whole setup because like Johnny said " the Shock Piston will free spin" and to get an impact wrench in there is not only a job, it's an adventure. When I had my E30 and had to do any work with the rear suspension, that was one of the first things I loosened. It's also recommended that you check both sides and if you're replacing one, go ahead and replace both shocks and supports.



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#4 (permalink) Old 03-19-2010, 12:55 PM
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Replacing a rear shock

Thanks for all of the advice and encouragement, job is done. Once I took off the two support nuts and stuff fell in my face I was home (almost) the shock rod had fractured right at the base of the upper support bracket,so I still had to get the center nut off if I wished to use the old top support bracket. Put the base piece of the strut, ind a vise and the nut came right off, after that is was almost easy, all went well until I put center nut on and tried to tighten, shock body rotated, so, I had daughter tighten nut while I held the shock body. Again thanks for the support.
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