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Lower Control Arm/Wishbone Assembly Question

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105 views 10 replies 3 participants last post by  DogDay  
#1 ·
Cloud storage filled up, and I stupidly deleted all my suspension reference photos.

Would someone please verify the lower control arm/wishbone support arm assembly order?

Photo 1: my best guess.

Photo 2: verifying the scallop of the washer goes towards the reverse-scallop of the support bar. Makes sense.

Photo 3: the manual I have says the "protected side" of the bushing goes towards the support arm. I assume that means the hard plastic side towards the arm? When I took it off, that's how I remember it, but now I'm wondering if the other side, which is better encapsulated by the bushing's metal sleeve is... Well... Protected?

Photo 4: I did not have any foam piece during disassembly-- maybe some powdery crumbs remained. The crumbs were inside the capped and lock-nutted cavity of the lower control arm, around the M10x1.25 locking nut. Perhaps I should stuff this foam piece in there? I don't see a reference to the foam piece in the manuals. I did watch a video of a 105 series Alfa installing similar foam pieces around the hard plastic side of the bushing, against the scalloped washer. However, the scalloped washer OD is barely more than the foam piece's ID, so it'll definitely slide over and onto the bar during install?


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Oh, and if anyone is doing this job, this socket is a good fit. I used a die grinder to cut down the inside a bit, and I put it on my impact to spin it up and die grind a millimeter off the exterior. After, it's a perfect fit to force out the bushing with a pitman arm puller.

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#2 ·
I dont know what Alfa model you have but i included my parts diagram for my sedan, which I believe should share the same basic components for the gt models. Dont know if this helps you.
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#5 ·
It's been a while since I did an Alfetta, but I believe that the foam goes against the arm on the outside of the cavity.
 
#8 ·
Post#1, first image. The large washer on the left should be beveled. The bevel goes against the support. Then the foam, then the LCA bushings 180 from the way you have it shown so the foam fits nicely on the shoulder. Use a small amount of silicone lube on the foam. The foam keeps the road grime away from the bushing.
 
#9 ·
@andylarry Thank you for your response. I appreciate it.

I think I found something: it looks like the original Alfetta LCA bushings did not have a foam piece. The 105/115 series did, and it went between the beveled washer and support. I could not find a photo of a Alfetta LCA with the foam piece-- nor did my Alfetta have the foam piece when I removed the LCA.

According to this link, the foam piece wasn't used with the original bushing nor the replacement.

Here are a few examples from the link. The foam piece is absent, and the plastic covered end is facing the support:
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Here are some pictures of the full assembly with no foam piece but the plastic-coated end towards the support:
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A lot of my speculation is based on the beveled washer having the same diameter as the plastic-coated end of the bushing. The foam piece is considerably wider, so it would be noticeable compared to the beveled washer.

In this new-old-stock photo, there isn't a foam component. There is also no foam piece in this bushing.

This new stock part has the foam component.
 
#10 ·
My bad. Like I said, it's been a long time since I had an Alfetta front suspension apart. Below is a diagram from my GTV6-Milano book.
 

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#11 ·
That is a much better manual than both of mine. The torque specs are all in a separate index whereas yours are alongside the labeled component.

So, I think the end result is:

Wishbone support || beveled washer with bevel facing the wishbone support || foam piece stretched over the plastic-coated side of the bushing OR skip the foam piece as it was not originally used // bushing with the plastic-coated side ("protected side") facing the wishbone support || thick washer || m10 x 1.25 lock nut

However, the real solution is don't be an idiot like me and delete images until the job is done...