Replacing Brake Pipes on an ABS System

[Grumpy Old Git]

My turn to ask (as it is something I have never done before).

I have fitted riser/pullbacks on my 1250 Bandit to improve my riding position (bad back) and although the suppliers of the riser/pullbacks state that it is not 'necessary' to swap out the brake hose for a longer one, the mod has made the pipe quite tight (even after removing the wire guide). I have ordered a new braided (longer) upper hose from Wemoto but on trying to gain info on how to carry out the replacement (g@@gle), I've been unsuccesful apart from the (really helpful) comment 'you need a specialist vacuum pump to drain / refill and bleed an ABS system'.

I am only replacing the top hose (from the front brake master cylinder/resovoir) to the manifold (front of the frame).

So come on guys and gals - Can I do this? If so, how?

If this is really a 'pig of a job', then I'll just get the local garage to do it.

NB. Very recently replaced (by bleeding) the brake fluid - No problems with that job!

[Guest]

If you have already successfully bled the system then I can't see what you're worried about.

this is for my bike. The GS which has a rather old fashioned ABS system.. it dates back to 1993 at least.

lifted from elsewhere as I am seldom so terse.

Drain the fluid from the calipers.

Replace the lines.

Refill and bleed from the calipers - but you will need to really make sure that the pistons are seated all the way back into the calipers to make sure that you get all the air out. I used a couple of wooden shims and it worked perfectly.

**Then bleed from the two nipples on the ABS module. One is marked VR for Front and the other is marked HR for the rear.

I believe that last line only comes into play if the fluid is old... so may not be necessary.

[Chrissb6]

Should be straight forward, the ABS is all electronic so as long as the brake system is fully bled and pressures up there should be no issues. Hopefully you should have no reason to test the ABS

[Stu]

the ABS unit is sealed and as such wont get any air in it

the only reason to bleed an ABS unit is when you want to change the fluid in it or your fitting a new one

[Tango]

This is the procedure for replacing the brake fluid on the Sprint ST and Tiger ABS models......so I think the process may be quite similar GOG.....

http://www.triumphrat.net/ecm-and-fi-tu ... edure.html

[Grumpy Old Git]

All done - Took over an hour and a half to complete!

Initially, I thought I had got something wrong as no air was coming through - Then after about 3 refils of the resevoir, AIR bubles, after that it was realitively quick.

Thanks for all the tips guys!