Fine-Grinding Both Sides of Both Rear Brake Disks (Brake Disks Removed)

34 21 947 Fine-grinding both sides of both rear brake disks (brake disks removed)

Important:
Always fine-grind both sides of both brake disks on one axle.
Observe max. machining dimension per friction ring side, minimum brake disk thickness (MIN TH) and surface roughness of brake surfaces.
Only one brake lining set may be used up on brake discs which have been lathe-turned to minimum thickness (MIN TH).
Brake disks of M models (Compound brake disks) must not be machined!





Grinding machine: refer to BMW Service Workshop equipment/Planning documentation.
Follow the machine manufacturer's operating instructions.