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E30 M3 - Remove and install rear trailing arm bushings.
Parts/Tools needed
  • ~3' length of threaded rod
  • 2 x Nuts
  • 3 x Medium sized washers (must have a smaller outside diameter than the bushings)
  • 1 x Large washer (must have a larger outside diameter than the bushings)
  • 2 x ~3" sections of pipe (I used 1/2" copper)
  • Torch

The basic principle here is to use a section of threaded rod to force the bushings out of the control arm.

The reason for the larger washer on the right side is so that it will bottom out on the control arm after the right bushing comes out. This leaves a bearing surface to work against when working the left bushing out.

I hope the pictures tell the rest of the story.




Heat the right bushing first, this will loosen its grip on the trailing arm and make it much easier to work out.


Now just use a couple of wrenches to walk the bushing out.


When the bushing comes out the large washer will bottom out against the trailing arm.


Now heat the left bushing.



Installing new bushings.
With OE bushings you could simply reverse this process.
With urethane bushings this will cause them to bind on install. The easiest way to install urethane bushings is to separate the bushing from the sleeve. Use a weak mixture of dish detergent and water as a lubricant and install the bushings first, then install the metal sleeve. When installed separately you should be able to press them in by hand.










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