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/
Also the static test should operate the rear brake lever , if it doesn't it will fail on the road . atb Nick T SA#12 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.427 / Virus Database: 240 - Release Date: 06/12/2002
