>There's 2 valves ( one each side ) located under large allen key, threaded >plugs , on the side of the unit . The valve has a piston / spring / small >spring / ball bearing , fitted . It's most likely the piston has jammed down >in the valve . >The way i've unjammed them in the past is to push the piston into the valve >and use the spring pressure to push it out ( you have to work it , and the >movements should free it up ) do this in a container of brake fluid . >If the piston is solid (won't move) then use either a vice to get it moving >in (gently does it ) or use a bolt smaller than the piston diameter and >gently tap with a hammer ( the general idea is to push the piston , so it >moves in and out ( under spring pressure ) to free it ) >Don't try to grab the piston with grips, to pull it out, or you'll damage it >, just keep working at it . >From what i can see in the manual , the rear valve is facing out ( away from >the bike ) so you should be able to remove it without taking the unit out of >the bike , but you will need to drain the rear brake circuit . >Have a look at Kevins website , rebuilding the abs pump for more info , it's >under motorcycles . http://www.kevinhawk.com/
Thanks for the help, all. This was exactly the kind of guidance I was looking for. I guess I've got a project to accomplish this weekend after all... :-) >Also the static test should operate the rear brake lever , if it doesn't it >will fail on the road . Failure of the rear ABS is not an issue, as long as I'm aware of the condition, and as long as the failure still allows the rear brake to operate. (I got a lot of practice with a non-rotating rear tire as an MSF instructor...) -- Greg
