brake 'speed bleeder'?

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230ew123
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brake 'speed bleeder'?

Post by 230ew123 » Tue 28 Nov, 2017 10:10 pm

Has anyone tried a 'speed bleeder'?
Just researching rebuilding calipers and came across mercedesdiy's suggestion of the U.S. 'speed bleeder'...

http://mercedesdiy.blogspot.com.au/2017 ... brake.html

and

http://www.speedbleeder.com/

looks like a good idea..anyone?

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Bartman4800
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Re: brake 'speed bleeder'?

Post by Bartman4800 » Wed 29 Nov, 2017 11:49 am

A speed bleeder works great. You can buy them from ebay, and mercedessource sells one too.
This works better than sucking out the fluid; often you keep sucking a bit of air in through the thread on the bleed nipple.

Pumping your pedal down to the floor is not such a good idea either. Likely your master cylinder bore is a bit rusty in the area where not used, and it can destroy your seals.

The bleeders are not cheap though. However, you can make your own from a garden pump sprayer you buy at Bunnings or Big W.

I am a cheapskate and found an even cheaper option.

I found a used ATE cover for the brake fluid reservoir.
Drilled a hole in it and screwed/glued a quick disconnect nipple into it.

I fill up the reservoir to the brim, screw on the cap, hook it up to my compressor, and apply max. 1 bar of pressure.

I open a bleed nipple and close when all air and gunky brake fluid has come out.
Close the nipple and inspect the level on the reservoir. Refill if necessary.
Repeat for all 3 other wheels.

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 "daily driver"
2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
2011 Kia Sportage "Missus commuter Bus"
2002 Mitsubishi Rosa Bus (converting it to a motor home)

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3DB
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Re: brake 'speed bleeder'?

Post by 3DB » Mon 04 Dec, 2017 9:18 pm

I have had a lot of experience with bleeding brakes over the last year. I had no end of dramas as you'll see if you look at my brake repair thread. I still have nightmares about it.

I made one of Bart's bleeding tools out of an old Tri-Sure child-safe lid that are on lots of paint thinner tins and old lawnmower fuel cans etc and a bicycle pump.

download/file.php?id=22579&mode=view

It worked well, but I stuffed 2 bicycle pumps getting brake fluid into the nozzles - they won't hold air now. I'd suggest going for the air compressor option.

Anyway, I recently got my courage back and decided to flush the brakes in my Rodeo and couldn't find a suitable lid for the Bart Method, so went and bought a $5 'one man brake bleeder' from Repco.

It worked a treat and I did the whole job in about 90 mins.

I don't know what to put that down to, but I suspect it is the difference between a 22 year old vehicle that has been meticulously maintained and a 40-year-old vehicle that has been thoroughly neglected.
3DB
1976 W123 300D (weekend warrior on biodiesel)
1995 Holden Rodeo 2.8 factory turbo diesel ute (daily driver...also on biodiesel)
(@thirddegreeburns on Instagram)

230ew123
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Joined: Wed 19 Oct, 2016 11:34 pm
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Location: eaglemont + cranbourne sth

Re: brake 'speed bleeder'?

Post by 230ew123 » Mon 04 Dec, 2017 10:58 pm

Yes, I read about some of your adventures, at least you get a good reminder that your alive! (probably a good way to stay slim through adrenaline too)

However, I was referring to the U.S. 'speed bleeder' (links above), it replaces the original bleeder nipple and has a valve to stop air coming back in..

I pulled some calipers off a wreck and having a play with them just to better understand..

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Bartman4800
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Re: brake 'speed bleeder'?

Post by Bartman4800 » Tue 05 Dec, 2017 10:20 am

Like I posted before, these speedbleeders will work, however the piston in your master cylinder will travel to an area where there is more than likely a rusty surface.

Result can be that your master cylinder starts to leak internally, and your pedal travels to the floor slowly.


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 "daily driver"
2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
2011 Kia Sportage "Missus commuter Bus"
2002 Mitsubishi Rosa Bus (converting it to a motor home)

230ew123
Adenauer
Posts: 323
Joined: Wed 19 Oct, 2016 11:34 pm
Model you own: w123
Location: eaglemont + cranbourne sth

Re: brake 'speed bleeder'?

Post by 230ew123 » Tue 05 Dec, 2017 10:41 am

as the master never gets fully depressed over it's life time and brake fluid attracting moisture, so shall rust, a new master cylinder would be a good replacement too whilst addressing brakes?

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Bartman4800
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Re: brake 'speed bleeder'?

Post by Bartman4800 » Tue 05 Dec, 2017 1:29 pm

Yes, you can. But do not fix what ain't broken (unless you are made of money)

For the rarer models, it works out more cost effective to have the master cylinder sleeved at a brake specialist.
The sleeves are stainless, which decreases the corrosion risk.

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 "daily driver"
2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
2011 Kia Sportage "Missus commuter Bus"
2002 Mitsubishi Rosa Bus (converting it to a motor home)

230ew123
Adenauer
Posts: 323
Joined: Wed 19 Oct, 2016 11:34 pm
Model you own: w123
Location: eaglemont + cranbourne sth

Re: brake 'speed bleeder'?

Post by 230ew123 » Tue 05 Dec, 2017 1:41 pm

hmm, did a quick googly and they go for around $130ish, which ain't bad to replace something over 30years..

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Bartman4800
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Joined: Fri 10 Oct, 2008 12:10 am
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Location: Perth WA

Re: brake 'speed bleeder'?

Post by Bartman4800 » Tue 05 Dec, 2017 2:11 pm

230ew123 wrote:
Tue 05 Dec, 2017 1:41 pm
hmm, did a quick googly and they go for around $130ish, which ain't bad to replace something over 30years..
That is cheap for a lot of peace of mind. Check with the forum sponsor too...


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 "daily driver"
2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
2011 Kia Sportage "Missus commuter Bus"
2002 Mitsubishi Rosa Bus (converting it to a motor home)

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3DB
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Joined: Thu 15 Oct, 2015 2:46 pm
Model you own: w123
Location: Sydney

Re: brake 'speed bleeder'?

Post by 3DB » Wed 06 Dec, 2017 9:15 pm

I must admit I didn't look at the link - I made the incorrect assumption that you were talking about the commercial version Bart's method. Now that I look at it, they do look like a good thing for <$10/wheel.

On pumping the pedal damaging the master cylinder - I was worried about this when I did the Rodeo, but because I never got any (or much) air in the system (never let the MC get completely empty), I found I was able to get away with only partial depressing the pedal using the one man bleeder, so avoided that.

One final thing - don't forget to 'bench bleed' the new master cylinder like I did!

Anyway, good luck!
3DB
1976 W123 300D (weekend warrior on biodiesel)
1995 Holden Rodeo 2.8 factory turbo diesel ute (daily driver...also on biodiesel)
(@thirddegreeburns on Instagram)

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