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How bad did I eff up my rear trailing arms!?


Z3M

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Using my new press on a partially installed bushing and this happened.....I'm freaking out a bit, can't believe I did this.  Please tell me this is salvageable.   The weld wasn't impacted, "just"some buckling.  I can't believe it!

 

image.jpeg

 

1968 BMW 2002

1998 M Roadster

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that TA  is now trash.  sorry.  time to find another one.

 

i am guessing you tried to press in new bushing by pushing both ends of arms together.  they are not strong in that direction.  have to isolate each bushing with press.....

Edited by mlytle

3xM3

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Rear trailing arms are all the same AFAIK; early cars have front arms that are significantly smaller/weaker than later cars.  

 

The way to install new bushings in both front and rear arms are by making a puller/installer from some thick-wall plastic plumbing pipe (very strong in compression), some long bolts/threaded rods and thick washers.  lube the bushings with dish soap or silicone grease and pull 'em in place.  

 

mike

'69 Nevada sunroof-Wolfgang-bought new
'73 Sahara sunroof-Ludwig-since '78
'91 Brillantrot 318is sunroof-Georg Friederich 
Fiat Topolini (Benito & Luigi), Renault 4CVs (Anatole, Lucky Pierre, Brigette) & Kermit, the Bugeye Sprite

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I did the whole "plastic pipe and large bolt" technique but found that it wasn't sufficient enough to pull the bearings through. I used plenty of grease and dish soap try to make it happen. The control arm that I bent was the one where I was trying to push one of the bearings that got stuck about three quarters of the way through.

1968 BMW 2002

1998 M Roadster

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heat is your friend.  not that wimpy heat gun heat, propane (or better map gas) heat.

 

I used some threaded rod (or long carriage head bolts), an assortment of washers, oversized nuts, and some metal pipe.  Loaded them up until the were tight, then put the heat to them.  Not quite catching fire or smoking crazy, but close.  At the right temp, they 'change' and get greasy and come out easier.

 

At least that is how I remembered it from a couple years ago.

 

Hope that helps

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