When I remove the front tire on my Mercedes wagon, I noticed the Disc Brake Rotor Screw is missing. So I order the set of 4 rotor screws, part number 2014210171. Also I noticed the two holes that the roll pins should be on the rotor are missing as well. Is it necessary to have these two roll pins on the disc? I did some research on this issue and it seems that the roll pins are just for making sure the disc is in the correct alignment with the hub prior to putting in the 5 stud bolts on the tire. After trying to locate the roll pins part number so I can order these roll pins, I am at lost for the part number. Does anybody have any ideas on this issue of the roll pins? Any response, feedback is greatly appreciated.

Is this what you're looking for?

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Dale

I clicked on the above link and nothing shows up. What is the kit name?

No I saw the picture above and it is not the spring caliper pins. The two dowel/roll pins are located on the hub of the disc/rotor.

Sorry, don't know...

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Dale

that is ok, and I appreciated it that you respond to my issue.

You are welcome. Slow time around here - I'd bet you'll see someone come on board later and give you better guidance than I have been able to at this point!

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Dale

You are probably are correct since this is Saturday night.

Poking around here I've found the drawing that shows these roll pins. After replacing brakes on my '95 wagon at least twice, I simply am not remembering them! Maybe I do have them but I just can not recall at the moment...

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Dale

I saw the technical article from pelican parts. Enclosed is the attachment showing the rotor is held to the hub by two roll pins (yellow arrows) and a 4mm Allen screw (red arrow). This is a little over kill as the wheel studs actually hold the rotor to the hub once the wheel is installed and torqued.
Use a punch and hammer the roll pins out the back of the rotor and hub (red arrow).




The roll pins are hardened steel; use a hammer and punch to reinsert them when you have installed the new rotor.

I hope this is more clearer in describing the issue.

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Remember, these are Mercedes Benzes. Nothing is engineered to mediocrity

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Dale

I agreed and these above words are not mine. The words are from the technical article.

Oh!

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Dale

Roll pin part number: 001481 012018 (replaces 129 991 00 41).
Mercedes calls it a clamping pin or sleeve.

dmorgan, I have owned four 124 vehicles and have never seen roll pins installed in the rotors when replacing rotors. If they were in place when each vehicle left the factory the techs who worked on each vehicle must realize the pins serve no real purpose, and didn't bother reinstalling them. As you note, the set screws secure the rotor to the hub while reinstalling the caliper and brake pads.

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Fred Hoelzle