Long downhill driveway!!!..lol

 

Sorry to be an idiot but I don't see where air or water enters the brake system. I see the rubber cover over the fluid that has air above it so when the fluid goes into the calipers it has a way of not fluid locking. Just don't see air or water entering the system until the cover is removed. Please explain. Thanks

 

Capillary action around caliper piston seals and fluid resevoir gaskets usually, nothing is truly impermeable. DOT 4 is HIGHLY hygrscopic it attracts moisture better than a lantern draws moths.

 

Thanks for the reply, makes sense.

 

Not to mention air contains humidity (water) to some degree, Florida and other coastal areas or places with high rainfall (can you say Tacoma, WA) has a lot more than say arid places like Arizona.
Which is a good reason why they said to keep the fluid level at max, so there's less air in the reservoir, which means less chance of water contamination. This is why any directions for replacing brake pads they say to be careful when squeezing the pads back in. You will push the fluid out the reservoir, if it was maintained correctly and the fluid was kept topped off, but if the fluid was left to go down with the pads, you wont bleed over.

 

They replace the bleader, unscrew and screw in the new one.
They have a spring & ball in side, when you turn them either 1/4 or 1/2 turn they allow the fluid to come out when you press the pedal or handle. When you let off they seal up. Faster than most of us can close the old school bleeder.
I have owned some tuff cars to bleed the brakes on and they helped get the job done

 

We're not talking about ABS failure. This is brake failure.

 

How can anyone defend Harley on this issue?

Can you imagine how many people would die if the brakes failed on your car when an ABS module went bad if you didn't flush your brake fluid?

If the module goes bad it should bypass the ABS but the brakles should still work and the ABS light should come on.

I have no problem with a part failing however if it fails and leaves the brakes inoperable there is no excuse for this.

 

According to HD the brake fluid flush and exchange cannot be performed by the owner as a digital technician must be used during the process. So if you've flushed and exchanged the brake fluid yourself on an ABS equipped bike , it hasn't been done correctly so you are still not flushing the fluid out of the abs module. And no matter what the system should never fail to the point of no brakes if the abs module fails.

 

I bought my RKC used this past March. I changed the brake fluid myself about a month ago and after I was done I took the bike for a short ride and hit the brakes hard enough to cause the ABS to kick in. I believe this will purge the old fluid from the ABS module?