Anything I need to know about pad and rotor change on the CLK63? - Mercedes-Benz Forum
 
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post #1 of 8 (permalink) Old 10-17-2018, 06:33 PM Thread Starter
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Anything I need to know about pad and rotor change on the CLK63?

I'm presuming nothing too different from any brake job, that I can bleed the lines one at a time using the old mason jar and clear plastic tube routine, but if there's anything I need to know please let me know 🙂
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post #2 of 8 (permalink) Old 10-20-2018, 10:19 PM
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My CLK55 has six piston Brembo fixed calipers at the front.
I was pleasantly surprised how easy they are to work on, I recently took out the pads and cleaned the calipers , and reassembled.
I have not changed the fluid yet, the front calipers each have two bleed nipples ,one on each side, so not sure which to bleed first,
but at least there is no SBC system to worry about.
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post #3 of 8 (permalink) Old 10-21-2018, 05:41 AM Thread Starter
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Originally Posted by Benzyle View Post
My CLK55 has six piston Brembo fixed calipers at the front.
I was pleasantly surprised how easy they are to work on, I recently took out the pads and cleaned the calipers , and reassembled.
I have not changed the fluid yet, the front calipers each have two bleed nipples ,one on each side, so not sure which to bleed first,
but at least there is no SBC system to worry about.
Thanks for that. Going to start the job this morning with the rears and change the oil in the diff while she's up in the air.

When you bleed with two bleed nipples it really doesn't matter which you do first, or if you both together (two plastic tubes into the same mason jar). You probably won't displace all the fluid right behind the piston anyway, just dilute it enough that it doesn't matter. I had 6 piston AP Racing calipers on my Ducati 916 back in the day...
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post #4 of 8 (permalink) Old 10-21-2018, 05:01 PM Thread Starter
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So I got one rear completely done: pads changed, rotor changed, even replaced the brake wear sensor. I also got the rotors and pads on both fronts changed, but I haven't bled them yet, and one of the rotors either has some grit behind it or something, or it's a warped rotor, because it's running out of true by about 3/32nds at the edge. Going to take the rotor off again and double check before I start calling the vendor. One rear to go after that, which shouldn't take long now I've had some practice....

No problems at all really except I'm a 53-year old chain smoking old fart and it's beginning to tell.....

NOW: where the bloody hell is the engine oil sump plug on the CLK63? Took the oil filter out, and yup, after two years sitting idle, it's full of what looks like margarine.....
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post #5 of 8 (permalink) Old 10-21-2018, 07:34 PM
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Well done...maybe clean the hub with a wire brush and some sand paper and push it on tight as you tighten the rotor screw.
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post #6 of 8 (permalink) Old 10-22-2018, 07:40 PM Thread Starter
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Well done...maybe clean the hub with a wire brush and some sand paper and push it on tight as you tighten the rotor screw.
That's what I figured. Gut reaction was that the rotor is warped but that seems unlikely given its a brand new Brembo from a very reputable vendor. A small bit of grit or sh..sh..sh.. shtuff at the hub could easily quadruple the run-out at the rim.

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post #7 of 8 (permalink) Old 06-15-2019, 02:15 AM
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To follow up ,
I changed the fluid using a pressure bleeder which pushes the fluid through the system ,,,very easy ,,just open the bleeder and watch it flow ...
Got a few small bubbles from one of the rears ,,,brakes now feel better.

On the front ,,,one side I did the outer nipple first ,,,and on the other I did it last...
No discernible difference ,,,so I agree ,,it doesn't matter which one you bleed first.

Farther away from the master cylinder done first.
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post #8 of 8 (permalink) Old 06-24-2019, 04:48 PM Thread Starter
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^ Mason jar with a bit of old fluid in the bottom to create an air lock, some clear (so you can see both bubbles and the change in fluid color) plastic tube from Home Depot, and away you go. The old fashioned way works a treat on these old gals.
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