UN R90 unintentionally omits the bedding procedure for the brake drum high load test for M2, M3, N2 and N3 vehicles. CLEPA proposes using the same bedding procedure as already adopted for the thermal fatigue test for such vehicles and for the high load tests for trailers.

The extension of UN R90 to include brake drums and discs introduced the concept of a part “identical” to the OE part. Because such parts would have been approved under UN R13/13-H, they were exempted from redundant approval under R90. This proposal would similarly define and exempt brake linings.

Submission of the Working Party on Brakes and Running Gear (GRRF) amending provisions concerning the brake drum “bedding in” procedures proposed in document WP.29/2012/4 (Proposal for Supplement 1 to the 02 series of amendments to
Regulation No. 90).

Proposal from the Forum secretariat to correct Revision 3 of the Regulation, aligning the English and French texts to the Russian version.

Proposal from the Federation of European Manufactures of Friction Materials (FEMFM) to align the requirements for chemically and physically identical brake lining assemblies or drum brake linings.

Text prepared by the Federation of European Manufacturers of Friction Materials (FEMFM) proposing to exclude brake linings and/or lining assemblies that are chemically and physically identical to the original part from the requirements (as is currently the practice for brake discs and drums).