Hi All,

At 170,000 miles it looks like it is time to do the upper control arms on my 1984 300D. I am planning to buy the parts from Pelican.

This car is my dd, so I need to be relatively sure I have the right parts for the job.

I understand I need four outer bushings.

Are those all part number 116-333-40-14-MBZ? If I buy just the UCAs and these four bushings, will I need anything else for the job?

Thanks,

Dkr.

If nothing is rusty and everything comes apart without breaking yes, those 4 parts and the two arms should do it.

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1984 300TD -- summer daily driver
Many others that aren't Mercedes...

Thank you for supporting us Dkr. If you're wanting to double check on those part numbers, please feel free to give us a call at 888-280-7799 and one of our MB part specialists will be happy to confirm this for you.

Changing suspension components can change the alignment.

Besides the 2 on each side rubber bushings there is also rubber bushings on the Torsion/Swaybar that bolt onto the Fire Wall.

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84 300D, 82 Volvo 244Gl Diesel

They come with the bushing where it bolts to the car, most of them don't come with the conical swaybar bushings. At least not from what I remember when I was redoing my front end last summer.

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1984 300TD -- summer daily driver
Many others that aren't Mercedes...

Try to get new nuts for the ball joints if not supplied with the arms you are purchasing.
Use quality parts!
Good luck!!!

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"Rudeness is a weak man's imitation of strength" - Eric Hoffer

I just ordered the Lemforders. What's with the nuts? That isn't usually a wear item, is it? Do they want to stick?

Dkr.

I think it e,tra work to only do uppers at that mileage.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

Suspension and steering nuts that are not castellated (slotted and use a cotter key) are of the self-locking type and are generally not re-used. The concern is that they may not stay tight/self-lock when re-used. They are inexpensive although not always easy to source.
Good luck!!!

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"Rudeness is a weak man's imitation of strength" - Eric Hoffer

If the Nuts come off OK you can use something like Loctite on them just as you can any other Nuts.

You ought to find some threads detailing the removal and re-installation of the upper control arms.

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84 300D, 82 Volvo 244Gl Diesel

That should take care of things for parts. Two of those bushings where the Upper Control Arm attaches to the Stabilizer and the Control Arms. They are probably the easiest parts to change of the front suspension.

If they are worn, it's likely that other parts aren't far behind.

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Sam

84 300SD 350K+ miles ( Blue Belle )

I agree, I started to have a squeaking upper balljoint, and the project spiraled into an entire front end rebuild... If you're gonna have to pay for an alignment, may as well replace everything.

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1984 300TD -- summer daily driver
Many others that aren't Mercedes...

This is exactly why I haven't bothered with anything in the front end of my car. I already know it needs bushings and balljoints, I figure I'll do it all at the same time, do it right, do it once, get it aligned and be done with it for the next 10 years or so.

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Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

It depends on the car. If the car had 300,000 miles and everything was out of spec, I would agree with you. Many of these replacement parts are not quite what the OEM ones are, even the better brands. If you replace everything at the same time, you may have a difficult time restoring that OEM suspension experience to troubleshoot what is causing wobble or vibration.

As your car gets knocked out of alignment multiple times, that wisdom can be questioned.

Dkr.

W123 Front steering suspension rebuild list

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Old Blue - 83 240D 6 speed manual trans, OM648
Green Machine - 2001 Europa G500
87 300SDL Bought on Peachparts. Low-ish miles..?

Family Truckster - 2012 VW Touareg TDI

Patchouli Wagon - 2004 E500 - SOLD
333k mile 97 BMW 750il V12. - SOLD
The Californian - 85 300TD - SOLD
Daily Super Sedan - 03 Audi S8 -SOLD