Bleeding BD Breaks

[Rick]

Anyone bled your breaks on your BD. My service manual says there is a BD tool for this and you inject break fluid into the bleed fitting??? Can you just bleed them the old fashiond way and fill the res, & pump the lever and bleed out air out of the fitting??

R

 

[Raywood]

Anyone bled your breaks on your BD. My service manual says there is a BD tool for this and you inject break fluid into the bleed fitting??? Can you just bleed them the old fashiond way and fill the res, & pump the lever and bleed out air out of the fitting??

R

Yes Rick, just like any brake you can bleed it by pumping the lever. The tool is no more than the simple plastic pump that you can get at your auto store down the street. It pumps fluid in from the caliper.


Good luck,
Ray

 

[Rick]

Thats what i thought. Thanks Ray!

 

[chucktx]

another way is with a vacuum bleeder.....sucks the fluid from the res. through the system into a container.....20 bucks from harbor freight....tech name is mighty vac......keeps the contaminates out of the master cylinders.

 

[Raywood]

Also a good thing to do every year just to get fresh juice in the brake system!

 

[go4dave]

here's the link to the tool at HARBOR FRIGHT,,,

Harbor Freight Tools - Quality Tools at the Lowest Prices

:2thumbs:

 

[P8RIOT]

I just kept wiggling the brake lever until the bubbles stopped coming out, and then it tightened right up. It did take awhile, though - about 20 minutes - because the hole at the resevoir is really small. Have patience.

 

[lee]

I picked up a tip on this today and wonder if any of you have tried it?

tie the lever down with something so the brake is full on - then remove the master cylinder cover and leave over night - all the air bubbles come to the surface and away they go. any views?

 

[Gas Man]

Sounds like that would work... being the master cylinder is higher and air should travel upwards...

 

[dogvet]

I picked up a tip on this today and wonder if any of you have tried it?

tie the lever down with something so the brake is full on - then remove the master cylinder cover and leave over night - all the air bubbles come to the surface and away they go. any views?

I wouldn't think the air would come out since the master cylinder piston would be all the way in the bore and closing off the ports in the master cylinder.

Try back bleeding...get a new oil squirt can and fill it with fresh brake fluid. Get a piece of hose that has the inside diameter to fit over the bleeder. Hook the hose up to the oil can and start squirting. The brake fluid will flow up the line to the master cylinder and the air will be forced out of the master cylinder...no muss, no fuss.

A little trick I learned years ago to beat flat rate. Just thought I'd share it.

 

[Gas Man]

I wouldn't think the air would come out since the master cylinder piston would be all the way in the bore and closing off the ports in the master cylinder.

Try back bleeding...get a new oil squirt can and fill it with fresh brake fluid. Get a piece of hose that has the inside diameter to fit over the bleeder. Hook the hose up to the oil can and start squirting. The brake fluid will flow up the line to the master cylinder and the air will be forced out of the master cylinder...no muss, no fuss.

A little trick I learned years ago to beat flat rate. Just thought I'd share it.

I was just telling another member about this meathod.

I had to do the same for both my brakes. My father in law suggested this to me as he's a mechanic.

 

[lee]

I better give that a try then

 

[Moespeeds]

When I was racing we used to do the thing with the zip tie overnight, not sure if that really ever made a difference, but one thing we did do that helped was once you had the system bled and you thought you had all the air out, go back and crack each banjo with a buddy slightly pulling the lever. There are always a few air bubbles hanging around there. I guess it's not so critical with us since DOT 5 sucks, but I still do it. Pumping from the caliper works great, especially on the rear since that line runs kinda level sometimes air hangs up in there.

 

[dogvet]

since DOT 5 sucks,

What's rwrong with DOT 5? Dot 3 was the one that I really hated!:flag:

 

[dogvet]

it doesnt mix with water. so that bubble of water boils at 212 degrees giving you a vapor lock and the infamous spongy pedal.

dot 3, 4 or 5.1 mix with water but still have a reasonably high boiling point even when water is present. i switched out to motul 600 dot 4. bites like a pitbull!

Ya just taught an old dawg a new trick!