Brake Bleeding: How much to fully flush the front...

Of a Ducati Monster 620.... Dual front brakes, I ran about 150mls through
it, but couldn't tell if it was flushed since my new 5.1 fluid is the same
colour as the old stuff in it... damn...

I guess I could either Dye the stuff in there and run it through, or just
buy a different colour 5.1 but neither is the preferred option.

ANY idea how much the system would take to fully flush?

Thanks all
JasonBW - Wollongong

 

No idea how much to fully flush.

Are you trying to change from dot4 to dot5.1?

To be sure, I'd drain the system completely, refill, bleed, then repeat
the drain, refill, bleed.

After all, you probably had to buy a container of fluid three or four
times to big for what you want to do.

regards,
CrazyCam

 

Thanks for that CrazyCam,

I ran through about 4 master cylinders worth before packing up, thing is -
I dont want to get any air in the line so I'm not keen on fully 'emptying'
it all...

Ahh, I'll run through a few more in case..

Thanks
JasonBW

 

To avoid air in the line (nothing totally does it) fill it from the bottom
up...it can get messy but it does the trick. Also gently tap the lines to
dislodge any bubbles.

 

Use the whole bottle.

 

drain the lines , then make a fitting which will allow you to connect a
clear line to the bleed nipples and force the new fluid up , close the
nipple and wait a few minutes then bleed the caliper conventionally ,
easy fast and messy :_)
but it works.
conventional means use the clear line and drop then end into a jar with
a little fluid to stop air being sucked back
never re use fluid .

 

one trick i was told was to leave the top off the master, and the air will
eventually work its way out with in a few hours.. with the cap on it still
will go to the top of the res but will take a few weeks...

 

Be careful. I don't know about Ducatis but Guzzi master cylinder seals do
not like Dot 5. They swell and stick. The manual for my Guzzi says do NOT
use Dot 5. I learned the hard way.

Theo

 

Thanks, yep, I heard that, its 5.1 though which is fine.

Thanks for the tips !!

JasonBW

 

Dolby surround brake-fluid!
Clem

 

I think it's actually pronounced Dobly, Clem.