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Home >> Porsche >> 2012 >> Boxster Base, Standard Trans >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> 47 - Brakes - Hydraulic Brake System, Regulator -- 987-BOXSTER-CAYMAN >> WM 4700TW Tightening Torques For Brake Hydraulics (All Models) >> Technical Values >> Master Brake Cylinder/Brake Booster

Master Brake Cylinder/Brake Booster

Location Description Type Basic value Tolerance 1 Tolerance 2
Threaded connection securing brake booster to body, M8   Tightening torque 23 Nm (17 ftlb.)    
Threaded connection securing brake unit support to body, M8   Tightening torque 23 Nm (17 ftlb.)    
Threaded connection securing brake master cylinder to brake booster, M14   Tightening torque 49 Nm (36 ftlb.)    
Threaded connection securing brake pressure line to brake master cylinder, M12 x 1 Tightening torque was increased to 25 Nm/19 ftlb. (also applies to older vehicles). Counter using special tool 9763 while tightening Tightening torque 25 Nm (19 ftlb.)