Checking the degree of wear of brake pads, discs and drums (Renault Sandero 1)

You will need a caliper or a ruler.

1. Place the vehicle on a lift or jack (stands).

2. Remove the front wheel.



3. Check the condition of the brake pads through the hole in the brake caliper housing. If the thickness of the friction linings together with the base is less than the permissible value (see table 9.1), replace the brake pads (see "Replacing the brake pads of the front wheel brake mechanism").



4. Measure the thickness of the brake disc. If its thickness is less than the permissible value (see table 9.1). replace the brake disc (see "Replacing the brake disc").

Note.

• 
• The car with the K4M engine is equipped with ventilated brake discs.

5. To check the degree of wear of the rear brake pads, remove the rear wheel and brake drum (see "Removal and installation the brake drum").



6. Measure the thickness of the friction lining together with the base. If the thickness is less than the permissible value (see table 9.1), replace the pads (see "Replacing the brake pads of the rear wheel brake mechanism").

Note: Replace the pads in the following cases:

• the thickness of the friction linings is less than 1.5 mm;
• the surface of the linings is oily;
• the pads are not firmly connected to the base.

7. Measure the diameter of the working surface of the brake drum. If it is larger than the permissible (see table 9.1), replace the drum (see "Removal and installation the brake drum").

Dimensions of brake pads, discs and drums

Table 9.1.

Parameter	Car with engine
	K7J	K7M	K4
Front brake mechanisms
Brake disc diameter, mm	238	259	259
Brake disc thickness, mm	12	12	20,7
Minimum permissible thickness of brake disc, mm	10,6	10,6	17,7
Maximum permissible runout of the brake disc, mm	0,07	0,07	0,07
Thickness of the brake shoe friction lining, including the base, mm	18	18	18
Minimum permissible thickness of the brake shoe friction lining, including the base, mm	6	6	6
Rear brakes
Diameter of the working surface of the brake drum, mm	180,25	203,3	203,3
Maximum permissible diameter of the working surface of the brake drum, mm	181,25	204,45	204,45
Minimum permissible thickness of the friction lining of the brake shoe, including the base, mm	3,5	3,5	3,5