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ABS Brakes-Fluid change

fatal

fatal

Cruisin' Guzzisti
GT Contributor
Joined
May 8, 2009
Messages
393
Location
Lancashire, UK
I'm helping a mate to service his 2010 Stelvio NTX that is fitted with ABS. We intend to change the brake fluid and I was wondering if it's done in the same way as non ABS systems. I have a vacuumn bleeder that I run off my workshop compressor and use this on other bikes, but have yet to change fluid on an ABS equipped bike.
Any advice please guys?
 
Bump. 35 views no one has any idea if it's done the same way :?:

I only ask as the BMW GS1150 that I used to own had some wierd ABS pump system and I left that to the dealer to sort.
All the other bikes I've owned have not had ABS so it was straight forward.
 
The BMW's had power brakes. That is another story.
As far as I know there is not a difference with ABS.
 
Just bled a 2010 Stelvio. Used and vacuum hand pump at the caliper, air gets in at the nipple threads, so did a final push at the master cylinder to make sure all air is out. No problems.

Never seen a bleeder run from a compressor. It must push the fluid through from the MC?
 
Thanks guys will get it done now.

Rafael, the compressor connects to a vacuumn 'pot', a tube (or two if you have twin discs) connect from the other end of the pot to the calipers, you open the bleed valves with ring spanner as normal then pull trigger on the 'pot' which then sucks the fluid out. It's done in a few minutes. I have used this on several machines over the years and it has proved to be very quick and efficient. You have to be quick with the top up fluid though :)
In the UK it is available in the 'Sealey' tools catalog.
 
As I said elsewhere you can bleed it conventionally but it won't purge the pump. To do that you need navigator or maybe one of the aftermarket diagnostic tools but I don't know if they carry the purging function.

Pete
 
pete roper said:
As I said elsewhere you can bleed it conventionally but it won't purge the pump. To do that you need navigator or maybe one of the aftermarket diagnostic tools but I don't know if they carry the purging function.

Pete
Click to expand...

I just check my Centurion Pro package. It appears that function is present. I haven't used it yet, but it looks like the software communicates with the bike during the bleeding task.
 
Basically you plug the tool in to either the same connector as for ECU diagnostics or another, identical, plug on the earlier bikes (I think, might be the other way round.).

Start to bleed the system then pressurise it and activate the programme. As the ABS pump cycles you crack the nipple and then re-tighten it and allow the master cylinder to re-prime. It will repeat this after three seconds, three times, so you just purge and prime, purge and prime, purge and prime after which the pump should of changed its fluid. Keep the reservoirs topped up of course if you perform the operation more than once.

Pete
 
Thanks for the info, we dont have access to any diagnostic kit, it sounds a bit complicated dealing with the ABS pump side of things. I'm now thinking the bike may as well have the whole system done. I'll suggest to my pal that he takes it to the dealer so that the whole lot is changed. He was trying to save a few quid by doing the job at home.
 
Not sure how long it will stay bled, but I seem to have solved the rear spongyness problem on some Norges buy conventionally bleeding as best as I can, then taking the bike out and forcing the rear ABS to activate a couple times, then conventionally re-bleeding. After the ABS activation the pedal again became spongy and bleeding released quite a bit more air. Has been good for over a month since doing it this way. Does not seem like a long time(it isn't!) but it's lasted twice as long as just simple bleeding has.

Peter
 
fatal said:
I'll suggest to my pal that he takes it to the dealer so that the whole lot is changed. He was trying to save a few quid by doing the job at home.
Click to expand...

How many dealers will actually cycle the ABS pump and not just pull new fluid from the MC like we would at home? I can't see most junior techs going through the diagnostics (assuming that brake bleeding is just one level more complicated than an oil change).

I've changed fluid on ABS cars (since model year 1997) and bikes and never cycled the ABS pump. Am I doing it all wrong??

I doubt it, but may not be exchanging all the fluid. Still, better than having old brake fluid in the system.....

Tom
 
john zibell said:
pete roper said:
As I said elsewhere you can bleed it conventionally but it won't purge the pump. To do that you need navigator or maybe one of the aftermarket diagnostic tools but I don't know if they carry the purging function.

Pete
Click to expand...

I just check my Centurion Pro package. It appears that function is present. I haven't used it yet, but it looks like the software communicates with the bike during the bleeding task.
Click to expand...

Has anyone confirmed that the Centurion Package can actuate the ABS Pump. My Centurian Standard shows it but it is greyed out (not availalble on my ECU).. :evil: :evil:
 
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