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Delta Link Bushing Replacement Question (With Pics) 1998

posted by  RepairmanJackal on  Mon Jan 9 18:36 CST 2012
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last visit: Tue Jun 10 09:52 CST 2014
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As usual, this is my 1998 C70 HPT Coupe but the question is applicable to 850s and S/V/C/70s.

I've just realized that the pivot bushing for my left rear (driver's side) delta link is installed backwards/upside down. (Thanks half-assed-job by original owner!)



it should look more like this (although this is the "other side")



The part being installed wrong tilts my left rear suspension down a couple inches, puts a nutty camber on the left rear wheel and is causing weird tire-wear.



it should look more like this:



Although it's live-able it's doing nothing good for the car, and obviously I need to fix it.

Question is... can I replace this bushing w/o dropping the entire delta link assembly?

As near as I can tell, this is part no. 9181027

Parts-wise, it seems like my only choice is ultra-cheap aftermarket or pay at least x2 for OEM dealer. After my experience with the URO lower control arms from IPD, I'm inclined to spend the extra dough...







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    Delta link bushing replacement was a near nightmare 1998

    posted by  RepairmanJackal on  Sat Feb 25 22:14 CST 2012
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    I replaced the offending delta link bushing today. Guides are useful, but few really deal with the finesse that this repair entails.

    While I had two new links (left and right), I opted to only replace the right link as it was the only thing really wrong with the rear suspension...

    Unfortunately... the M12/1.75 bolt that secured the bushing to the link broke off and the remnant 30mm proved completely resistant to extraction (actually breaking my bolt extractor kit).

    I progressively drilled out the damaged bolt but found it impossible to get even a the thin remnants of the old bolt to release. Heating with a torch followed by rapid cooling did nothing. Picking with a screwdriver was also a waste.

    Eventually I drilled and tapped the hole to M10/1.5, and then tried for M12/1.75... the threads didn't survive despite my best careful efforts.

    I finally gave up, drilled and tapped the hole for a M12/1.75 helicoil. I ended up installing two coils (trimming off the excess with a dremel tool).

    It seems to be okay now, but I do not wish to repeat that particular repair any time soon. I'm scheduling a 4-wheel alignment for tomorrow, which I hope finally closes the chapter on my rear suspension "weirdness"

    Pics to follow...

    I'd offer this advice to anyone else attempting to work on the rear suspension bushings. Disconnect the shocks and remove the rear springs. It's 2 nuts for each side and makes things much easier... if you can call anything about the rear end "easy"...

    Also.. the delta link bolts are the same size and pitch as the upper shock mount bolts on a 700/900 series car. I lucked out in having some spare Class 10 bolts on hand and the exact helicoil kit for my problem.








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    Delta Link Bushing Replacement Question (With Pics) 1998

    posted by  KlausC on  Tue Jan 10 10:46 CST 2012
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    LOL, sorry, I just had to laugh when I saw the first picture!

    I believe you can, and it should be easier without 10 years of rust. The one poster claimed he didn't even jack up the car???

    http://volvospeed.com/vs_forum/topic/147248-rear-traverse-arm-anchorage-bushing-question/page__hl__delta+link__fromsearch__1

    Klaus
    --
    My advice is free, so you got what you paid for...








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      Delta Link Bushing Replacement Question (With Pics) 1998

      posted by  RepairmanJackal on  Tue Jan 10 17:26 CST 2012
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      last visit: Tue Jun 10 09:52 CST 2014
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      Thanks for the link. And laugh. The first mechanic that looked at it thought a really fat guy had been driving the car before me.

      I've known this was a problem for a while, but it wasn't until I removed the Arrakis wheels that I realized just how much trouble this has been causing my tires.

      So time to order up...

      And there I thought I'd be done with the mechanical work before winter set in.







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