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Front control arm washers, not just washers?


obrut

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I'm starting to assemble my front suspension on my 72 510. I bought the car and it was partially disassembled.  Are the inner washers thicker and stepped or is it just a washer?  Outer just a washer?

 

I'm running stock arms with stock moog bushings.

 

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They are both specifically called 'special washer' but what makes them special I don't know. Must be important. Probably thick as they support the outside of the two bushings.

 

The one closest the front between the cross member and the LCA is 54537-A0800, the one to the rear is 54538-U0101 if that helps. 

 

 

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27 minutes ago, iceman510 said:

Lower control arm or other?

yes lower control arm

 

14 minutes ago, datzenmike said:

They are both specifically called 'special washer' but what makes them special I don't know. Must be important. Probably thick as they support the outside of the two bushings.

 

The one closest the front between the cross member and the LCA is 54537-A0800, the one to the rear is 54538-U0101 if that helps. 

 

 

thanks Mike, I did a quick search but couldn't find them for sale anywhere.  If they are just washers I'll measure and find some but some of the pictures I see it looks like a spacer or maybe two washers stacked together.

Edited by obrut
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If I recall correctly, the washers on the control arm side are stepped and serrated to grip the inside race of the control arm bushing, and I think the inside one has a special taper on the inside for the bolt.  I don't think the washer on the opposite (front) end is anything particularly special.  The bolt is very special, with a tapered shoulder on the control arm end that wedges into the tapered hole through the crossmember, locking it in place and giving it additional strength at the sheer point.

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The one closest to the cross member is stepped. The one at the end of the pin has a "notch" in it.

I will look around later today. I think I may be able to get you some pics.

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This is what I have arm.thumb.jpg.f834f548de5f38e48e2bdab306f7a2e3.jpg

 

When I bought the car the arms were held on with bungees so the car could roll.  Looks like I need the special inner washer, then slide control arm on then a washer with a notch and nylock nut.  If anyone has these special washers let me know, I'm going to put a post in the wanted section.

Edited by obrut
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11 hours ago, Icehouse said:

I might have a pair of those washers if you need them.  

I sent Jeff a message, hopefully he has the washers, I think I should be able to buy new nylocs after i figure out what thread size they are.  I'll post some pictures of the washers when I get some so if someone else searches for pics in the future.

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21 minutes ago, thisismatt said:

IIRC they are different on opposite ends 🤣

They are different on both ends.  The front side without the control arm is smaller and fine thread.

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Posted this pic in your ad.

EAJP20G.jpg

I can get diameter and thread pitch from the pin tomorrow if needed.

Edited by KELMO
Edit: provided I can remove that stinkin' nut.
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On 1/18/2023 at 9:48 PM, DARIN 510 said:

The original does have nylock nuts. 
still available from Nissan.


front nut (small M12x1.25) 08912-34210


rear nut (big M14x1.5) - 08912-4441A

CB9998C3-A6D1-4583-A4D5-8B9B2D6D918C.jpeg

Thanks for posting the size and part numbers because I need these too.

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