Do you still use your jack points?
 

I found that one of my 85 300D's jack points has rust on surrounding rocker metal.

I posted a picture in a thread in Bodywork forum.

I have not used those jack points for years. I use floor jack and could put bottle jack in car in place of MB jack. Do any of you that own old W123s still use the jack points? They always seem a bit suspect.

I had the front passenger side weld repaired last fall and , and another pic and here is finished repair. The current one is on same side at rear. In two minds whether to have my welding guy fab new piece of plate and weld it in. Based on the front one, the internal structure is likely quite strong and would probably still lift car. But that outside rust needs to be repaired. I could use POR15 to seal rust and then lay up an epoxy/glass surround. Welding would no doubt be best, but hard to justify.

I never have, and also have the same kind of idea as you.

Im intending to cut 4 patches out of the center of the rocker on a parts car, and cut out the jack points and have the patches welded in.

IMO the jack points do absolutely nothing but rust heavily, and this is my plan to eliminate this endless rust problem once and for all. All 4 of mine are getting pretty soft around the hole

Yes. It leaves space open for stands.

I have always used the jack points. never really thought of doing otherwise. Mine are in good shape, and the one that was not good I put all new metal in. made it out of stainless that I formed to fit.

Yes
 

I keep mine sealed with plastic corks and insert a vary large bolt as a lift point.

It's the metal around the tubes that rusts out it seems. The plugs only keep the inside of the tube dry and free of dirt. Not sure why the rocker metal rusts. Maybe water gets under the paint or undercoating where the tube protrudes.

Regarding lifting, I lift on or near the front subframe mounts - there is room for jack and stands. For rear, if I want both sides raised, I lift under diff and then put jack stands at subframe mounts. I wouldn't put jackstands under the rockers on a car of this age ;)

Starting to think that filling jack holes, then fairing in over depression around tubes so rockers are smooth on outside may be an option. That would perhaps solve one rust problem!

47dodge said Did you weld stainless to the steel rockers?

I use mine all the time, I don't trust crawling under the car with just the jack and a tire lifted....but I have used them numerous times, to jack the car up and place a stand under it....even if I just need a lift extra room to see something under the car I use it....I love the jack points, so much nicer then the bumper jack found on may 70s and pre American cars.....now that is a scary way to replace a tire!

X2 I use the original jack in the jacking points but always use chocks and jackstands for insurance.

Always used them when I had a 123; always use them when I lift the 124 and 210. However, I then put a jack stand under the pad and take most of the tension off of the jack. The jack remains in the jacking point as a backup and as a convenient place to "store" it until time to take the car down.

Jeremy

What is "rust"?

grrrrrrrrrrrrrrrrrrrrrrrr!!!!!!!!!!!!!

{jealous}

x3 I do the same.

Watch out using plugs. My cousin in Germany (who used to work for Mercedes and has seen a million of them age) warned me that plugs had a tendency to trap moisture and actually cause rust rather than prevent it. Personally, I like the finished look of the factory plugs, so I just try to keep the holes dry and greased.

How many people use them for a tire change? Curious, sounds like lots of people use them to lift to put the car on stands

For that I use a big floor jack, then jack stands like above.

I have a small floor jack, a sheet of aluminum, plus a 4 way tire iron I keep in the trunk for blown tires. Much more effective than the stock jack, and eliminates the potential for the jack rotating in the hole

So far, looks like those in dry climates are more inclined to use the jack points.