4 Wear condition marking check Paragraph 5.3.7.3. x x x x 5 Integrity test − thermal fatigue Paragraphs 4.1.1., 4.2.1. of Annex 11, 4.1.1., 4.2.1. of Annex 12 x x 6 Integrity test − high load test Paragraphs 4.1.2., 4.2.2. of Annex 11, and paragraphs 4.1.2., 4.2.2. of Annex 12 x 7 Service brake vehicle performance test Paragraph 2.2. of Annex 11, Paragraph 2.2. of Annex 12 Pair of Either or rear axle 8 Parking brake vehicle performance test Paragraph 2.3. of Annex 11, Paragraph 2.3. of Annex 12 Pair of discs If applicable 9 Service brake dynamometer performance test Paragraph 3.3. of Annex 11, paragraph 3.3. of Annex 12 x Alternative to vehicle test Item No. / Test Sample number for brake discs for vehicles of categories L1, L2, L3, L4 and L5 Remarks 1 2 3 4 5 1 Geometric check Paragraphs 5.3.3.1., 5.3.4.1. x x x x x 2 Wear condition marking check Paragraph 5.3.7.3. x x x x x 3 Material and hardness braking surface Paragraphs 5.3.3.2. x 4 Bell and fasteners material check Paragraphs 2.4. and 2.5. of Annex 15 x 5 Resistance to static torque test Paragraph 2. of Annex 14 x x
6 Service brake vehicle performance Paragraphs 3.2. of Annex 14 x 7 Thermal fatigue Paragraph 5.1. of 14 x 8 Service brake dynamometer performance Paragraph 4.3. of Annex 14 Alternative to vehicle test " Paragraph 5.1.2., amend to read: "5.1.2. Replacement discs and replacement drums conforming to the identification code specified in vehicle type approval documentation to Regulation No. 13 or to Regulation No. 13-H and replacement discs conforming to the type specified in vehicle type approval documentation to Regulation No. 78, are deemed to satisfy the requirements of paragraph 5. of this Regulation." Paragraph 5.3, to read: "5.3. Technical requirements… … Depending on its group, the replacement brake disc or drum has to pass the following tests: Resistance to static torque (only for vehicle categories L1, L2, L3, L4 and L5) Performance tests according to Regulations Nos. 13/13-H/78 (Type 0, I, II, etc.) Comparison test with dynamic frictional properties of the original part Integrity tests (high load and thermal fatigue) Original replacement Disc not subjected to this regulation Identical parts No No No No Equivalent parts No No No Dynamometer test Interchangeable parts Static test Vehicle test or alternative dynamometer test Vehicle test or alternative dynamometer test Dynamometer test The test requirements for brake discs and drums for vehicles of categories M and N are detailed in Annex 11. The test requirements for brake discs and drums for vehicles of category O are detailed in Annex 12. The test requirements for brake discs for vehicles of categories L1, L2, L3, L4 and L5 are detailed in Annex 14."
5.1.1. This test is applicable to vehicle categories L3, L4 and L5. 5.1.2. Test conditions The inertia mass of the inertia dynamometer shall be determined in accordance with the requirements laid down in paragraphs 4.2.1., 4.2.1.1. and 4.2.1.2. of Annex 14. The rotational speed of the dynamometer shall correspond to the linear test speed of the vehicle based on the mean of the largest and smallest dynamic rolling radius of the tyres authorized for that vehicle. 5.1.3. Front disc 5.1.3.1. Test programme 5.1.3.1.1. Burnishing According to Table A14/5.1.3.1.1. Table A14/5.1.3.1.1. Burnishing Step Vehicle gross weight [kg] Initial speed [km/h] Final speed [km/h] Deceleration [m/s2] Starting temperature before the braking [°C] MAX Brakings quantity [---] Max speed of the permitted airflow during the brake application [m/s] 1 75% / disc q.ty 80 30 4 100 60 30 5.1.3.1.2. Fatigue test According to Table A14/5.1.3.1.2. Table A14/5.1.3.1.2. Thermal fatigue test Step Vehicle gross weight [kg] Initial speed [km/h] Final speed [km/h] Deceleration [m/s2] Starting temperature before the brakings [°C] +/- 10 °C Time between 2 consecutive brakings [s] Brakings quantity [---] Max speed of the permitted airflow during the brake application [m/s] 1 thermal 75% / discs q.ty 50% Vmax 5 7 100 (a) 30 5 20 2 functional 75% / discs q.ty 80% Vmax 5 8 200 --- 1 30 3 mechanic 100% / discs q.ty 60% Vmax 5 10 200 --- 2 30 Steps from 1 to 3 = 1 cycle; repeating for a total of 20 cycles (= 160 brakings) (a) Starting temperature of the 1st braking only