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1992 mercedes..cant bleed brakes


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lilthunder4619
New User

Sep 17, 2008, 4:53 PM

Post #1 of 3 (1557 views)
1992 mercedes..cant bleed brakes Sign In

I replaced both rear calipers and rear brake lines...when I try to bleed the brakes I get nothing...no air...no fluid...Im lost...PLEASE if you know anything about mercedes PLEASE tell me what IM doing wrong...and by the way Ive done brakes on a lot of american cars...never a problem..so Im not a dummy


dmac0923
Enthusiast

Sep 17, 2008, 5:05 PM

Post #2 of 3 (1553 views)
Re: 1992 mercedes..cant bleed brakes Sign In

if you crack the brake line fitting at the back of the caliper does the fluid come out there??


i know you said youve done your share of brakes.....but did you double check that the right ones are on the correct side?
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Tom Greenleaf
Ultimate Carjunky / Moderator
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Sep 17, 2008, 7:38 PM

Post #3 of 3 (1552 views)
Re: 1992 mercedes..cant bleed brakes Sign In

Just tossing out thoughts on possible troubles....

Did brake hoses empty the master cylinder when calipers were off? If master was drained dry it may need to go back to bench bleeding.

Don't know for sure but is this car's brakes separated such that the dual system of brakes is crossed instead of front separate from backs like most vehicles. It may be a front left and right rear together type.

Antilock components if equipped might need bleeding.

Subborn jobs can require a pressure bleeding from the master or some I've had luck applying vacuum to the bleeders thru clear hose till you see fluid then they behave and finish bleeding out.

You may want to check if a line for rears right at master cylinder will bleed out when just loosened. I've also had older cars that when and old master cylinder goes deeper with the bleeding by brake pedal push the seals into a corroded area of the master cylinder's bore and tearing them such that they won't make fluid pressure anymore,

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