My Latest Invention: The BYB Vacuum Brake Bleeder

[El_Freddo]

PS - where'd you get the tube joiner?

Cheers

Bennie

[BaronVonChickenPants]

Any pet shop that stocks fish tank supplies should have both the tube and the joiner.

Jordan.

[hughybabes]

Speaking to a mechanic friend a few years ago he told me that the best way to bleed hydraulic lines like brakes and clutches was to use a vacuum, apparently pumping the peddle can cause all sorts of damage to your brake booster diaphram and possibly the piston and bore of your master cylinders, and pressurising the resevoir needs a lot of different adapters and has been known to blow seals.

So on and off for years I've been trying to figure out a cheap simple way to make a vacuum pump for this task, it came to me the other day and I could have slapped myself for not thinking of it sooner.

Ingredients:
Standard $2 spray bottle
Length of fish tank tubing
Tubing joiner

Using this gear create this device:


Then all you need to do is push the tubing over the bleed nipple, unlock it and bleed your brakes, clutch, whatever, I used the bottle that goes with the trigger to squirt the fluid into, didn't want to spray brake fluid everywhere.

Just wondering whether B von CP has taken diagram off due to his patent application. Very interested in seeing diagram; replacing rear wheel cylinders at the moment.
Sounds good, Baron !! Well done.

[AlpineRaven]

This sounds good idea but where is the picture? I've always wondered what was the best way of doing it!
Cheers
AP

[BaronVonChickenPants]

Sorry guys, I've juggled my hosting and borked some links in the process, will have the pic back shortly....

Jordan.

[discopotato03]

If you just want to change the old fluid for new I've seen service people do this .

They sucked the old fluid from the master cylinders reservoir with some kind of pneumatic venturi device then refilled with fresh fluid .
Then they simply got underneath and opened all the bleeders and let the fluid drain under gravity until new fluid came out of the bleeder nipples . You have to keep an eye on the fluid level and not let it run out because this lets air into the system .
Obviously this works because the bleed nipples are towards the top of the calipers cylinders and fluid from higher in the system pushes itself up and out of the bleed nipples .
I've even seen my mechanic friend Steve screw the bleed nipple right out and not got any air into the system .
I've done this a couple of times myself on my RX L Series and it works a treat .
I just hose around the brakes with fresh water to get the old fluid off back plates wheels etc . Just keep it off paintwork .

Yes the wear ridge in older master cylinders , seen this stuff the seals when pushed past this point on a few occasions .

A .

[BaronVonChickenPants]

Original post fixed.

Jordan.