Audi Workshop Service and Repair Manuals

Instructions for use –  Unscrew defective brake line at brake caliper or wheel brake cylinder. Catch escaping brake fluid and dispose of fluid in the correct manner.

–  Cut through brake line at a suitable point (straight, easily accessible section of pipe) using pipe cutter -2-. –  Remove section of pipe to be replaced. –  De-grease outside surface of brake lines.

–  Clamp brake line in mole grips -4- so that approx. 50 mm protrudes out of plastic jaws. –  Clamp brake line scraper tool -3- in electric drill and apply tool to brake line. –  With electric drill running at slow speed, exert light pressure and strip off coating from brake line. The length of the coating that is stripped off is determined by the limit stop incorporated in the brake line scraper tool. –  Pull scraper tool off brake line and clean off residue of coating.

–  Remove mole grips and slide threaded pipe connector -D- onto brake line.

–  Push brake line -B- against limit stop -A- in flanging tool.   Note The brake line must be in contact with the limit stop when the socket head bolts are tightened, otherwise the flanged connection on the brake line will not be formed correctly. –  Clamp brake line in flanging tool tightly enough to prevent it from moving. Then fold up limit stop -A- and fully tighten socket head bolts in diagonal sequence using Allen key -C-.

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–  Screw spindle into flanging tool onto limit stop. –  Unscrew spindle. –  Slacken off socket head bolts in diagonal sequence. –  Take brake line out of flanging tool. Clean and inspect brake line with flanged connection. Briefly flush out section of pipe remaining in vehicle: –  Connect brake filling and bleeding equipment -VAS 5234-, attach hose of bleeder bottle to flanged connection of brake line and operate brake filling and bleeding equipment -VAS 5234- briefly until some brake fluid has run through. –  Blow out new section of brake line with compressed air before installing.

–  Join together sections of brake line with connecting piece -E-. –  Install brake line. –  Then bleed brake system → Chapter.   Caution Make sure that the brakes work properly before the vehicle is driven on the road.