w111 brake master lines

1961-1968: a.k.a "Finnie" or "Heckflosse" models
190, 190D, 200, 200D, 220b, 220Sb, 220SEb, 230, 230S, 250SE coupe, 280SE coupe, 280SE 3.5 coupe, 220SEb cabrio., 250SE conv., 280SE cabrio., 280SE 3.5 Cabrio., 300SE, 300SE coupe, 300SE conv., 300SEL
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ekdave
E Class
Posts: 57
Joined: Mon 22 May, 2017 7:37 pm
Model you own: w111

w111 brake master lines

Post by ekdave » Wed 24 May, 2017 3:12 pm

hi guys i have a 61 w111 and it has not brake fluid flow to front brakes .. I pulled the master down and it looks fine it has 5 port of 2 which are plugged 1 supplys rear 2 other supply front brakes but I cant get and fluid flow to them and was wonder is the lines had been plumed up wrong so an image would be helpful .. ps how do u post pics on forum ???

thanks Newbee David

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Bartman4800
300 SLR
Posts: 1727
Joined: Fri 10 Oct, 2008 12:10 am
Model you own: w111
Location: Perth WA

Re: w111 brake master lines

Post by Bartman4800 » Wed 24 May, 2017 5:09 pm

Hi,

You need to have 5 posts to be able to post pics.

About your brakelines, it is common for the older master cylinders to have some output ports plugged.
They are being used on LHD and RHD models etc.

The reason you cannot pump any fluid:

-Some or all of your hoses are swollen and internally blocked.
If they are older than 10 years do yourself a favour and order new ones from MBspares (or have them made locally at your brake specialist)

-Your master cylinder is rusted and seized inside

-Your remote booster is blocked

Is yours a Sedan and what year? Disc brakes up front or drums all around etc...

Bart
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
2006 Ford Focus "missus car"
2002 VW Passat V6 30V Station Wagon (my new commuter bus)

ekdave
E Class
Posts: 57
Joined: Mon 22 May, 2017 7:37 pm
Model you own: w111

Re: w111 brake master lines

Post by ekdave » Wed 24 May, 2017 7:35 pm

hi thanks Bart,

its a drum drum 1961 sedan,

I can bleed rears no problems but the pedal fails to hold pressure, today I removed the master and checked it out, all seemed good bore clean no sign of wear, rubber plunger seem ok .. ( still suspect its passing since it wont retain pedal pressure,

there is no sight of leaks, managed to get fluid to 1 front wheel but not the other despite there been fluid at the connector

will pull wheel cylinders tomorrow to check them ,, and look at booster , couldn't see a bleed point in it thou


Thanks David

User avatar
Bartman4800
300 SLR
Posts: 1727
Joined: Fri 10 Oct, 2008 12:10 am
Model you own: w111
Location: Perth WA

Re: w111 brake master lines

Post by Bartman4800 » Thu 25 May, 2017 11:38 am

If your system was dry, you need a compressor to blow the fluid through the system.
Just filling the reservoir and trying to pump will not do it.

There is a bleed nipple on the booster's hydraulic section.

I had all masters and slaves of clutch and brakes resleeved with stainless sleeves. Cost me 500 aud including new seals back in 2008.

Bart
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
2006 Ford Focus "missus car"
2002 VW Passat V6 30V Station Wagon (my new commuter bus)

ekdave
E Class
Posts: 57
Joined: Mon 22 May, 2017 7:37 pm
Model you own: w111

Re: w111 brake master lines

Post by ekdave » Thu 25 May, 2017 8:15 pm

thanks Again bart, I managed to get all wheel bleed today but the master still fails to hold pressure, wheel cylinder all seemed in good nic ,,
master was clean with no corrosion, since pedal pressure is lost to quickly I can only assume it passing back to reservoir, il have it tested and re sleeved

Regards David

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