Left Or Right Front Brake Caliper: Reassembly

WARNING: This page does not describe the selected car, but rather 43 other vehicles, including the 2006 BMW M3, 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW M3, and 2005 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.

Coat cylinder bore, piston, dust sleeve and sealing ring with a light coat of brake cylinder paste.
Install sealing ring in rear annular groove of cylinder bore.
Install dust boot on piston. Ensure piston is not tilted when installing. Using wooden block, install piston and dust boot. See Fig 1.
Press brake lining fully outwards and insert spring (4). See Fig 2.
Only clean guide screws, do not grease. Check and replace if necessary. Tighten to specification. See TORQUE SPECIFICATIONS .
Install caliper. See CALIPER ASSEMBLY .

Fig 1: Pressing In Piston

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Identifying Retaining Spring

Courtesy of BMW OF NORTH AMERICA, INC.