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post #1 of 4 Old Jun 20th, 2009, 10:06 am Thread Starter
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Bleeding ABS brakes

We're finishing out a full service on an ABS-equipped 01 F650GS, last item brake bleed. Question on ABS bleed. Members of are split as to whether this could/ should be done as self-maintenance. The manuals state that the MoDiTec must be used to ensure there is no air left in the system and the valves are actuated allowing all the old fluid to be purged. Some members state they have done the flush with no poor performance results. Those who have done a bleed seems to use the same simple method of bleeding non-ABS.

Anyone with a good understanding of the system have an opinion in the matter? If it's really best, then we'll let the dealer do this one item.

As always, than you in advance.
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post #2 of 4 Old Jun 20th, 2009, 10:46 am
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Re: Bleeding ABS brakes

I think you would be OK bleeding the brakes yourself, especially if you use something like a Mighty Vac micro bleeder. I flush and bleed the brakes on my ABS equipped 95 GS at regular intervals, even replaced the front master cylinder and refreshed the system with no issues. I did it on my 99 LT as well. As long as it doesn't have the servo assist brake system you'll be fine.

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post #3 of 4 Old Jun 21st, 2009, 7:29 am
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Re: Bleeding ABS brakes

Not familiar with the ABS-equipped 01 F650GS system, But posted to see if will help out at all.

I have bleed the brakes on the 02 K1200LT 3 (ABS Integral) 3 times and have had no ill effects.
I do not use a Vacuum pump. I bought Speed Bleeders for all of the bleeder valves except the ABS unit itself and just used the servos to flush/replace the fluid in all of the 4 loops.

I have followed the attached instructions every time.
I also leave the battery charger on the battery when I do this as it will kill the battery quickly if you flush all 4 systems one after the other.

If you are careful and do not introduce air into any of the systems you should be golden.

Good luck
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Last edited by rkirker; Jun 21st, 2009 at 7:39 am.
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post #4 of 4 Old Jun 21st, 2009, 8:49 am Thread Starter
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Re: Bleeding ABS brakes

Thanks- I need to get the mightyvac- I had a passive bleeder helper. Need to possibly get some speed bleeders, too??? I'll google/ search it.
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