Note: Vehicles with powerful engines have ventilated brake discs at the front, while other vehicles use solid brake discs.
Mark the position of the rear wheels relative to the hub so that the balanced wheels take their original position when installed. To mark, it is enough to make a stroke with chalk or paint on the disk and hub.
Loosen the wheel bolts. Raise the vehicle and remove the wheels.
Measure the thickness of the brake disc. In workshops, a special caliper is used for this, since when worn, a protrusion is formed on the edges of the disc. You can also use a regular caliper, placing two hard gaskets, and then subtract the thickness of these gaskets from the measurement result.
Attention! Measurements must be taken at several points on the disk.
For brake disc dimensions see below in the chapter "Technical characteristics of the brake system".
When the wear limit is reached, replace the brake disc.
If significant scratches or grooves deeper than 0.5 mm are found, the brake disc should also be replaced.
Install the wheels, lower the vehicle and tighten the wheel bolts crosswise to 110 Nm.
Text copied from an internet website: OpelBook.ru
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