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Registered
1985 190e 2.3
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25 Posts
Discussion Starter #1
Hello,

I have a 1985 190e 2.3 and am having problems with the brakes to the tune of 90-95% brake failure.

Symptoms:
No signs of fluid loss,
Bleeding brakes reveals very little pressure at front, none at back.
Front brakes are only a little grabby
No help from the rears at all except for hand brake.
Pumping the brakes makes no difference whatsoever.

From the described symptoms... can someone tell me if I am looking at a failed brake booster, master cyclinder or both?

Thanks for whatever help comes. :)

JT
 

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Registered
1985 190E(SOLD 04/14/11) - 1986 190E - 1986 190E 2.3-16
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105 Posts
Master cylinder is shot for sure. Typical symtoms.:thumbsup:
 

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Registered
1985 190e 2.3
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25 Posts
Discussion Starter #3
Thanks for confirming what I pretty much suspected...

I've ordered a Metelli replacement.... Italian part in German car, I hope they can get along. LOL!

From looking at the Haynes manual and the easy accessability of the part, I am tempted to do this one myself.

For any of you who have done this yourself... how long did it take you and were there any "gotcha's" that I should look out for?
 

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Registered
93 190E 2.6; 82 300 SD Turbo
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1,686 Posts
Its fairly easy and straight forward, you just have to make sure you bench bleed the new master cylinder.

1) remove fluid from old reservoir
2) remove reservoir
3) remove brake lines from old master
4) remove old master from booster
5) bench bleed the new master
6) install new master
7) install brake lines
8) install reservoir
9) fill
10) bleed all 4 corners.
 
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