MarkW Posted October 9, 2015 Posted October 9, 2015 Evening all!I'm going to have my first ever crack at replacing brake fluid. Should I completely drain the old stuff out and refill it, or add new stuff to the old and flush it through? I guess it's a toss up between bleeding loads of air out of the system or slightly contaminating the new fluid with the old. Brake bleeding on the ST1300 looks like a bit of a performance with its linked system, proportioning valve, and having to remove one of the front callipers to tilt the secondary master cylinder back.How much fluid do you reckon I'll need, and had I may as well do the clutch fluid at the same time?Cheers peeps! Quote
Stu Posted October 9, 2015 Posted October 9, 2015 add new fluid to old and flush it through try not to get air in to the system as sometimes it can take ages to get out Quote
Guest Posted October 9, 2015 Posted October 9, 2015 add new fluid to old and flush it throughExcellent tip! Quote
MarkW Posted October 9, 2015 Author Posted October 9, 2015 add new fluid to old and flush it through try not to get air in to the system as sometimes it can take ages to get outBrilliant - thanks Stu! Quote
RTwo Posted October 9, 2015 Posted October 9, 2015 I use a big syringe to suck out most of the fluid in the master cylinder first but that just speeds up the flush it through method Quote
Stu Posted October 9, 2015 Posted October 9, 2015 I use a big syringe to suck out most of the fluid in the master cylinder first but that just speeds up the flush it through method I do the same to be honest and it also helps to take out all those little black bits of sediment too! Quote
Cam Posted October 10, 2015 Posted October 10, 2015 Delboy's Garage (YouTube) just did a brake fluids change how to video. Loads of excellent tips in there. Quote
cockercas Posted October 10, 2015 Posted October 10, 2015 +1 for sucking out most of the fluid from the mc.Nobody seems to have covered it so you need a few things.Nip inyo you local pet store and buy some airator tubing for fish tanks.It fits over the bleed nipples and is clear.Plenty of tissueAnd a tub or jar with some fluid or water in to put the other end of the tube in.Attach tube to bleed nipple.Put the other end in some fluid.Suck most of the fluid out the mc and fill back up with fresh.Pull brake lever inOpen nippleClose nippel Release leverRepeat Keep a eye on the fluid level in the mc.Mop up any spilled fluid. Its very corrosive. Quote
cockercas Posted October 10, 2015 Posted October 10, 2015 You dont need loads of fluid. Buy a small bottle.I would do the clutch while you are at it. Quote
oldie59 Posted October 11, 2015 Posted October 11, 2015 This "> is a far easier way to bleed brakes and clutches, or there are several other video's showing this method on Youtube Quote
MarkW Posted October 11, 2015 Author Posted October 11, 2015 This "> is a far easier way to bleed brakes and clutches, or there are several other video's showing this method on YoutubeNow I like the look of that method! One big syringe ordered, and I'll be giving it a go in the week when my new brake pads arrive. Quote
oldie59 Posted October 11, 2015 Posted October 11, 2015 This "> is a far easier way to bleed brakes and clutches, or there are several other video's showing this method on YoutubeNow I like the look of that method! One big syringe ordered, and I'll be giving it a go in the week when my new brake pads arrive. Don't forget to push the pistons back before you bleed the brakes and fit new pads, otherwise you may overfill the master cylinder Quote
Elgreco Posted October 12, 2015 Posted October 12, 2015 Yes deffo reverse bleed with syringe.Saves you tons of time. Quote
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