If such a check is not possible, then the wheels must be removed to check the residual thickness of the brake pads.
Attention! There is a risk of injury when jacking up the vehicle or placing it on jack stands. Therefore, it is recommended that you familiarize yourself with the safety precautions outlined in chapter «car jacking».
1. Mark the position of the wheels on the hubs with paint. A balanced wheel can later be set to its original position.
2. Loosen the wheel bolts. The vehicle must be on the ground.
3. Raise the car and remove the wheels.
4. Check the thickness of the brake pads. The remaining thickness of the linings of the inner 1 and outer 2 brake pads is checked through the inspection hole in the caliper 4 (see arrows in illustration). The wear limit is considered to have been reached if the pad thickness, excluding the metal base, is 2.0 mm (VANEO 3.0mm).
Attention! In workshops, when performing vehicle maintenance, the brake pads of the front wheels are replaced if their residual thickness is less than 7 mm, excluding the base plate (VANEO less than 9 mm). The brake pads of the rear wheels of the workshop are changed if their residual thickness is less than 6 mm (VANEO less than 5 mm).
To accurately measure the remaining lining thickness, remove the brake pads and measure the remaining lining thickness with a vernier caliper. If at least one brake shoe lining has reached the permissible wear limit, then all four linings on all brake shoes of both brake mechanisms of the corresponding axle must be replaced.
Attention! If you follow the rule of thumb, then 1 mm of brake pad lining corresponds to at least 1000 km of run. This rule can be applied when operating the car in adverse conditions. Under normal operating conditions, pads last longer. With a lining thickness of 4.0 mm, they are enough for at least another 2000 km of run.
5. Check the calipers for signs of brake fluid leakage. If any are found, repair the caliper immediately (work is done in the workshop).
6. Check the outer and inner surfaces of the brake disc for grooves, rust and cracks. Ventilated brake discs with cracks equal to the thickness of a hair and up to 25 mm long, resulting from high loads on the disc, do not need to be changed. However, if the cracks have spread and the grooves formed have a depth of more than 0.5 mm, then such a brake disc must be replaced.
7. Check the thickness of the brake discs, see relevant chapter.
8. Put the wheels in place, guided by the labels applied before removing the wheels. Lubricate the centering saddle of the rim with a thin layer of grease before installing the wheels. Do not apply grease or oil to the wheel bolt threads. Replace rusty bolts with new ones.
9. Screw in the wheel bolts.
10. Lower the car on wheels.
11. Tighten the wheel bolts in a cross pattern to 110 Nm.