Brakes -Hydraulics, regulator, booster 911 Carrera 4 (996) · After installing a new brake master cylinder 2nd ste

Brakes -Hydraulics, regulator, booster 911 Carrera 4 (996) After installing a new brake master cylinder 2nd step: and/or a new hydraulicunit, do the following Bleeding at front on right with running while bleeding: Open the right rear bleeder booster pump valves, then fully depress the brake pedal severaltimes. Hold for 2 -3 seconds after Preliminarywork: Bleed brakes as usual each depression,then release slowly. (Page 47 -101/102). Repeatthis procedure in the sequence Booster pump activation cannot be carried rear left / front left / front right. out with the Porsche System Tester 2 until This will remove all air bubbles. after this has been done. Otherwisedamage to the booster pump can occur. Note To bleed at front on right with runningAlso carry out this procedure if the brake booster pump the bleeding device remainshydraulics was largely empty or if after connected (switchedon).bleeding residual air can be detected Bleedingpressure approximately2.0 bar.by excessive brake-pedal travel. Important: In vehicles with high mileage or Connectthe Porsche System Tester 2in old vehicles, double the pumping cycles and to the diagnostic socket.use only half the brake master cylinder stroke Switch ignition on. Select the "Bleed"menu in(damage to the brake master cylinder could the PSM system. Entry takes place throughoccur / primary boot damage), the ABS system (automatic status change after PSM). Continue bleeding at front on right with running booster pump (Step 2). r~". 0 I 625_96 Open the front right bleeder valve (use collecting bottle). 47 -102 47 01 07 Bleeding brakes (vehicle with PSM) C4_47101 Printed in Germany -15, 1998