Champion de-links the brakes as in the diagram below. There isn't a procedure like on the 2 wheeler with the linked brakes. Seems that you do the front and rear separately, pick a side and go to the bleeding process.<br />
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Here is a link to the pdf download of the Champion Owners Maintenance Notes, Not too much info on brakes other than top off the fluid and what kind of pads to use. Click on the bottom link for the solid axle GL1800. <a href="http://www.championsidecars.com/owner_s_maintenance_notes.asp" target="_blank">Owner's Maintenance Notes</a><br />
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The brake diagram below comes from page 8 of the Champion installation instructions for the GL1800 solid axle. <a href="http://www.championsidecars.com/installation_instructions.asp?FSL4Page=2" target="_blank">Installation Instructions</a> About 1/2 way down the page click <b>Trike Kit - Honda GL1800 Solid Axle Rev 10 </b>to download the pdf file.