This test group includes all brake drums that do not vary by more than 10 per cent (referring to the smallest value) in terms of the inside diameter of the drum and by more than 40 mm as regards the shoe width of the drum brake.
This test group includes all brake drums that do not vary by more than 10 per cent (referring to the smallest value) in terms of the inside diameter of the drum and by more than 40 mm as regards the shoe width of the drum brake.