Mercedes Benz S123 300TD | Changing Discs and Pads
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- Опубліковано 1 жов 2024
- I have a very annoying shake when braking and I suspect a warped brake discs.
So today I change them on my 1981 Mercedes-Benz 300TDT
#mercedesbenz #w123 #turbodiesel
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A timeless design. Those series of mercs are my favourite.
No car experience and this was my first job on the 280te plus: replacing brake lines and flushing brake system (so much air). Took me 2 months in my backyard.
Such a good feeling when you put on new rota / discs Seppo , a heavy car like that needs great brakes 👌🏻
Changing the discs and pads was absolutely the right thing to do. The discs can be recycled (scrap metal) and they might've been below the minimum thickness so refacing them might not have been possible anyway. The front brakes do most of the braking so they need to be 100%. The clamping nuts are stilll used on newer Mercs such as my W204 C200. This is testament to how well engineered these cars are.
Neither the rotors nor the pads were at replacement thickness. This is the malaise of our time: it´s all right to just through it away because it´s recycled. No. The first two of the three REs are reduce and reuse.
@@petemommo9622 In an ideal world that would happen but the harsh reality and the costs dictate otherwise. It would be better to prevent the discs from warping in the first place by using the parking brake instead of the footbrake when stopped in traffic. This is the most common cause of warped front discs as they don't cool evenly with the brakes applied.
I would like to be able to reface them myself because I dont like to throw away usable parts and also enjoy the experience of reviving stuff... but yes.. it wont save me much!
Nice video. Good how-to guide. Car is looking well.
Common problem on autos. On a completely different subject, check out Mathewsons classic car auctions, they've got a rough running mk1 106 rallye in red. I'm watching to see what it makes. They're brilliant wee cars.
I do like the design of these older callipers were you can remove the disc pad without removing the calliper and l have changed a lot of disc brake pads on various vehicles
Good job thanks
You should have checked if the brake piston could turn freely. Not only in/out put also left/right. The uneven wearing did come from somewhere.
As many suggested... it's probably from the auto gears.... using the brake to keep the car stationary makes the disc very hot where the pad is. Btw the discs are from 1997!
Only with lathe of your own it was possible to get the disks fresh again. But bringing them to a machine shop is indeed to expensive. Just for clamping it on the machine they ask 50€ for it. At that moment you already payed for a new set.
MB service manual says runout and play should be checked.
With an automatic, you have to try to avoid keeping your foot on the brake pedal after a stop. This causes warpage of the discs. I always use the handbrake at traffic lights.
Ha, have you ever used the handbrake in a w123 or w124? Obviously not. Anyway, nobody does what your suggesting
@@morganmcdonagh2663 Yes. The pedal. Of course you know better not to use the handbrake. No need to judge.
Man kan efterse de bagerste bremser , uden at skifte dele ? Herunder håndbremsen .
Interesting, but what's the transmission type to do with the brake rotors? Do the rotors get hotter because of no engine brake?
It's driving habit mostly. Autos, when braked to a stop are commonly left in gear at lights and junctions so the pads stay clamped to the disc while the whole assembly os hot from the braking, the differential cooling between the exposed disc and area clamped by the pads can cause disc distortion.
Best way to avoid that is to brake to a stop and leave space to slowly creep forwards as you wait to exit the junction so the discs can cool more evenly.
I was laughing so hard and don't want to be insulting you Seppo, but "driving at high speed! With a MB-Diesel? In Denmark? How fast could that be 95 km/h? I am so sorry for that, but you asked for it. Thank you for all these sympathetic videos, please film a bit longer, maybe 30 minutes be better.
Just did a 3 hours drive with 5 people and luggage at 125kph!.... :D
12:45 Why are the headrests missing their covers?
it IS covers... :)
@@SeasideGarage ahhhhh.... 😂
This episode could be called Braking Bad. 😅
As for turning brake discs on a lathe, why bother? 20 year old, rusty, crusty discs have done their job, just replace them. And at some stage you're below minimum thickness. I don't think anyone in Europe has resurfaced discs since 1983. I know the Yanks do it, but brake discs don't cost a fortune.
I would always replace.
The good thing is that a old disc is already been though heat cycles... but yea its not cost effective!