w123 front calipers, Bendix design, odd retaining pin and spring design - PeachParts Mercedes-Benz Forum

gregp1962 · #1 03-27-2024, 09:57 PM

Quote:

Originally Posted by qualified-merc

You shouldn't move the car an inch without having installed ALL the relevant brake caliper components.

I haven't moved that car because I don't have the correct springs. Others have said that many calipers don't have springs and they do just fine. Are these springs just an optional add on? Or will they not function properly without them? I'm asking about actual function.

Diesel911 · #2 03-28-2024, 12:53 AM

Quote:

Originally Posted by gregp1962

I haven't moved that car because I don't have the correct springs. Others have said that many calipers don't have springs and they do just fine. Are these springs just an optional add on? Or will they not function properly without them? I'm asking about actual function.

See the attached pictures. The last picture shows the springs orientations before the pins are inserted.

This has bendix calipers
https://www.ifixit.com/Guide/Mercedes+W123+Brake+Pads+Rear+Replacement/21531

tyl604 · #3 03-28-2024, 08:30 AM

Those are good pics; I could not find any. If they actually shipped you Bendix calipers that flat retainer will not work (that new retainer that you - are ordering is for ATE and it looks substantially different from the old ones - but maybe will work)

If the supplier actually sent you a Bendix caliper, go back to the springs. If he sent an ATE, use the flat. The ATE calipers used to have ATE in the casting of the caliper but I do not know if the new ones have that.

Thinking you may have been shipped a Bendix as you requested, go back and try to install the springs as shown in the pics and let us know.

It is truly a five minute job.

gregp1962 · #4 03-28-2024, 12:03 PM

Quote:

Originally Posted by Diesel911

See the attached pictures. The last picture shows the springs orientations before the pins are inserted.

This has bendix calipers
https://www.ifixit.com/Guide/Mercedes+W123+Brake+Pads+Rear+Replacement/21531

Those springs won't fit as shown in the pictures.

tyl604 · #5 03-28-2024, 02:58 PM

Greg is correct. If you actually have Bendix, the flat cross will not work. Go back to the springs and install as shown in the pics.

Diesel911 · #6 03-30-2024, 02:11 PM

Quote:

Originally Posted by gregp1962

Those springs won't fit as shown in the pictures.

Go back to your fist post. All that I posted is trying to answer that. I see from post #25 you gave the wrong information in your original post.

And for some reason I am not having any sympathy or empathy for you going without a car for weekend.

gregp1962 · #7 03-30-2024, 09:35 PM

Quote:

Originally Posted by Diesel911

Go back to your fist post. All that I posted is trying to answer that. I see from post #25 you gave the wrong information in your original post.

And for some reason I am not having any sympathy or empathy for you going without a car for weekend.

A few people were helpful here. But, it was impossible for them or me to know that Autozone had mixed the wrong parts. Problem resolved now.

Diesel911 · #8 03-30-2024, 11:29 PM

Quote:

Originally Posted by gregp1962

A few people were helpful here. But, it was impossible for them or me to know that Autozone had mixed the wrong parts. Problem resolved now.

I found out what I did because I took the time to look up and learn the information. I answered your trigonal question.

Best of luck to you.

gregp1962 · #9 04-01-2024, 10:25 AM

Quote:

Originally Posted by Diesel911

I found out what I did because I took the time to look up and learn the information. I answered your trigonal question.

Best of luck to you.

Diesel911, You didn't answer any questions. No one could have known that they supplied springs that didn't match the calipers that they sent. The pics posted by JHZR2 helped a lot though. Thanks JHZR2!!