how do car makers fill their brake system?

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never needed fancy tools. stick hose on bleeder nip and run into bottle. leave it. pump brakes and top off reservoir. do it 'til it runs clean. move to the next. no partner required, no air in lines, works great, year after year.

I'm sure pressure/vacuum is less of a PITA, but since I just do this to each car every 2-3 years, I haven't had a huge need for it...

M
 
I made my own from a garden spray bottle. I can't post a picture for a few days because I am not at home. It cost me under $30. I had problems sealing the master cylinder, but after trying a few different things, I finally got everything to work.

You can make your own. Do an internet search for home made pressure bleeder. If you have the space to store it, I suggest a large pump sprayer. The larger the air capacity, the less the pressure will drop as the fluid gets pushed into the system.
 
Originally Posted By: meep
never needed fancy tools. stick hose on bleeder nip and run into bottle. leave it. pump brakes and top off reservoir. do it 'til it runs clean. move to the next. no partner required, no air in lines, works great, year after year.
M


Does this really work? Then why do they keep on talking about 2-person method?
 
OK, how do you know "till it runs clear" if you are in the car pumping the pedal? Does the column of the fluid in the tube become clear and stays in the tube? If there are bubbles can you see them after the pumping? Approximately, how many pumps until you refill the reservoir? How many turns bleeder bolt is loosened?

I have seen time based gravity method work myself but I have not seen anybody do this single person method.
 
If I don't have the fluid extractor that I bought to do oil change for the E430, to bleed the brake I would try Tom's method. But I already have it and it is so easy to use and very effective.

While the fluid extractor siphoning old brake fluid at the rate I like, not too slow and not too fast either, I can have an eye on the reservoir all the time to make sure it never gets too low.
 
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here are pictures of my home made pressure bleeder.

399588716.jpg


Stuff on handle is dust.
399588717.jpg


Motorcycle fuel filter with stainless steel screen to catch dirt in bottle
399588718.jpg
 
Love my power bleeder. Standard cap on all Euro cars so I've used it on a dozen cars in the last 10 years.

When I had a Saab, I made a bleeder for the clutch by clamping some bicycle inner tube to the cap, and using a hand-held pump to bleed the slave.
 
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