[W126 Coupe] Brakes and air

[Ronny 560sec]

Jason,
I thought that when there is a vacuum leak the brake pedal will stiffen! Or 
am I wrong.
Meanwhile I will ask my mechanic to check that line too.

Ronny

--------------------------------------------------
From: "Jason Mavris" <mavris2 at comcast.net>
Sent: Saturday, December 18, 2010 9:43 PM
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Subject: Re: [W126 Coupe] Brakes and air


> Don't know if this has been mentioned. By I suspect that the Brake Booster 

> Vacuum Hose is cracked and this is the cause of your problem.  You might 

> check that line. They generally crack right at the oval part on the line 

> closet to the master cylinder. If its a hair line crack the brake pedal 

> will go to the floor.

>

> Jason

> ----- Original Message ----- 

> From: "Ronny 560sec" <ronny.geenen at verizon.net>

> To: <jhodgman at gmail.com>; "Mercedes Coupes Mailing Lists" 

> <mbcoupes at mbcoupes.com>

> Sent: Saturday, December 18, 2010 5:18 PM

> Subject: Re: [W126 Coupe] Brakes and air

>

>

>> My mechanic replaced today also the master cylinder of my 1987 SEC and 

>> used this time the newly bought Motiv pressure bleeder.

>> The brakes became firm. They did a test drive and first it start holding. 

>> Then they asked me to test drive the car. And when I started I felt 

>> directly the soft pedal that went all the way down slowly. Even pumping 

>> did not help.

>> Since this is happening again I think the master cylinder was OK. And 

>> they have used about 2 gallon of break fluid.

>> Any idea and advice

>>

>> Ronny

>> Glendora, California

>>

>>

>>

>> --------------------------------------------------

>> From: "Jonathan Hodgman" <blueridgemb at gmail.com>

>> Sent: Thursday, December 16, 2010 10:27 AM

>> To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>

>> Subject: Re: [W126 Coupe] Brakes and air

>>

>>> Given the age of the master cylinder in Most of these cars, pressure or 

>>> vacuum bleeding is the way to go.

>>>

>>> Also, there are times when air gets caught up in the ABS pump.  I've 

>>> found that cycling the key a few times as each wheel is bled eliminates 

>>> any trapped air.

>>>

>>> Jonathan

>>>

>>>> The MB Coupes Website!

>>>> W126 SEC Mailing List

>>>> Postings remain property of MB Coupes, L.L.C.

>>>

>>>

>>> -- 

>>> Jonathan Hodgman

>>> Blue Ridge Mercedes/AMG East

>>> http://www.blueridgemb.com

>>> Offering Enthusiast Service, Restoration and Tuning.

>>> (404)805-1357

>>> 96 S600 Euro

>>> 94 E420 (Parts)

>>> 93 300SE

>>> 93 500E (Parts)

>>> 91 E300D 2.5

>>> 91 560SEC ECE

>>> 91 500SL Jap Spec

>>> 91 560SEC 226/271

>>> 90 300SL

>>> 88 300E AMG

>>> 89 190E 2.6 5sp

>>> 89 300TE

>>> 88 560SEC AMG Euro ECE (Parts)

>>> 89 560SEC AMG 6.0L SOHC Solid Lifter

>>> 87 AMG Hammer Wagon 6.0L 32V

>>> 87 AMG Hammer 6.0L 32V

>>> 86 560SEL AMG 6.0L 32V

>>> 84 300CD 304K and still going!

>>>

>>> The MB Coupes Website!

>>> W126 SEC Mailing List

>>> Postings remain property of MB Coupes, L.L.C.

>>>

>> The MB Coupes Website!

>> W126 SEC Mailing List

>> Postings remain property of MB Coupes, L.L.C.

>>

>

>

> The MB Coupes Website!

> W126 SEC Mailing List

> Postings remain property of MB Coupes, L.L.C.

>